diff --git a/src/core/CMakeLists.txt b/src/core/CMakeLists.txt
index dfa7bbf06..29c4b22d6 100644
--- a/src/core/CMakeLists.txt
+++ b/src/core/CMakeLists.txt
@@ -61,8 +61,8 @@ add_library(core
     host_settings.h
     interrupt_controller.cpp
     interrupt_controller.h
-    libcrypt_game_codes.cpp
-    libcrypt_game_codes.h
+    libcrypt_serials.cpp
+    libcrypt_serials.h
     mdec.cpp
     mdec.h
     memory_card.cpp
diff --git a/src/core/cheats.cpp b/src/core/cheats.cpp
index 7c8161fbe..8822702bf 100644
--- a/src/core/cheats.cpp
+++ b/src/core/cheats.cpp
@@ -684,7 +684,7 @@ bool CheatList::SaveToPCSXRFile(const char* filename)
   return (std::ferror(fp.get()) == 0);
 }
 
-bool CheatList::LoadFromPackage(const std::string& game_code)
+bool CheatList::LoadFromPackage(const std::string& serial)
 {
   const std::optional<std::string> db_string(Host::ReadResourceFileToString("chtdb.txt"));
   if (!db_string.has_value())
@@ -712,7 +712,7 @@ bool CheatList::LoadFromPackage(const std::string& game_code)
     if (start == end)
       continue;
 
-    if (start[0] != ':' || std::strcmp(&start[1], game_code.c_str()) != 0)
+    if (start[0] != ':' || std::strcmp(&start[1], serial.c_str()) != 0)
       continue;
 
     // game code match
@@ -788,11 +788,11 @@ bool CheatList::LoadFromPackage(const std::string& game_code)
     if (current_code.Valid())
       m_codes.push_back(std::move(current_code));
 
-    Log_InfoPrintf("Loaded %zu codes from package for %s", m_codes.size(), game_code.c_str());
+    Log_InfoPrintf("Loaded %zu codes from package for %s", m_codes.size(), serial.c_str());
     return !m_codes.empty();
   }
 
-  Log_WarningPrintf("No codes found in package for %s", game_code.c_str());
+  Log_WarningPrintf("No codes found in package for %s", serial.c_str());
   return false;
 }
 
diff --git a/src/core/cheats.h b/src/core/cheats.h
index 30f87c1d4..c1761ffcb 100644
--- a/src/core/cheats.h
+++ b/src/core/cheats.h
@@ -183,7 +183,7 @@ public:
 
   bool SaveToPCSXRFile(const char* filename);
 
-  bool LoadFromPackage(const std::string& game_code);
+  bool LoadFromPackage(const std::string& serial);
 
   void Apply();
 
diff --git a/src/core/core.vcxproj b/src/core/core.vcxproj
index f9c735d1c..af3ec2215 100644
--- a/src/core/core.vcxproj
+++ b/src/core/core.vcxproj
@@ -55,7 +55,7 @@
     <ClCompile Include="host_display.cpp" />
     <ClCompile Include="host_interface_progress_callback.cpp" />
     <ClCompile Include="interrupt_controller.cpp" />
-    <ClCompile Include="libcrypt_game_codes.cpp" />
+    <ClCompile Include="libcrypt_serials.cpp" />
     <ClCompile Include="mdec.cpp" />
     <ClCompile Include="memory_card.cpp" />
     <ClCompile Include="memory_card_image.cpp" />
@@ -129,7 +129,7 @@
     <ClInclude Include="host_interface_progress_callback.h" />
     <ClInclude Include="host_settings.h" />
     <ClInclude Include="interrupt_controller.h" />
-    <ClInclude Include="libcrypt_game_codes.h" />
+    <ClInclude Include="libcrypt_serials.h" />
     <ClInclude Include="mdec.h" />
     <ClInclude Include="memory_card.h" />
     <ClInclude Include="memory_card_image.h" />
@@ -165,4 +165,4 @@
     </ClCompile>
   </ItemDefinitionGroup>
   <Import Project="..\..\dep\msvc\vsprops\Targets.props" />
-</Project>
+</Project>
\ No newline at end of file
diff --git a/src/core/core.vcxproj.filters b/src/core/core.vcxproj.filters
index f6f793a03..f809c9330 100644
--- a/src/core/core.vcxproj.filters
+++ b/src/core/core.vcxproj.filters
@@ -53,7 +53,7 @@
     <ClCompile Include="cpu_recompiler_code_generator_aarch32.cpp" />
     <ClCompile Include="gpu_backend.cpp" />
     <ClCompile Include="gpu_sw_backend.cpp" />
-    <ClCompile Include="libcrypt_game_codes.cpp" />
+    <ClCompile Include="libcrypt_serials.cpp" />
     <ClCompile Include="texture_replacements.cpp" />
     <ClCompile Include="multitap.cpp" />
     <ClCompile Include="gpu_hw_d3d12.cpp" />
@@ -114,7 +114,7 @@
     <ClInclude Include="gpu_types.h" />
     <ClInclude Include="gpu_backend.h" />
     <ClInclude Include="gpu_sw_backend.h" />
-    <ClInclude Include="libcrypt_game_codes.h" />
+    <ClInclude Include="libcrypt_serials.h" />
     <ClInclude Include="texture_replacements.h" />
     <ClInclude Include="shader_cache_version.h" />
     <ClInclude Include="multitap.h" />
diff --git a/src/core/game_database.cpp b/src/core/game_database.cpp
index 1c573b3d0..af2fe4a17 100644
--- a/src/core/game_database.cpp
+++ b/src/core/game_database.cpp
@@ -32,6 +32,7 @@ enum : u32
 };
 
 static Entry* GetMutableEntry(const std::string_view& serial);
+static const Entry* GetEntryForId(const std::string_view& code);
 
 static bool LoadFromCache();
 static bool SaveToCache();
@@ -105,7 +106,7 @@ void GameDatabase::Unload()
   s_loaded = false;
 }
 
-const GameDatabase::Entry* GameDatabase::GetEntryForCode(const std::string_view& code)
+const GameDatabase::Entry* GameDatabase::GetEntryForId(const std::string_view& code)
 {
   EnsureLoaded();
 
@@ -140,24 +141,23 @@ std::string GameDatabase::GetSerialForPath(const char* path)
 
 const GameDatabase::Entry* GameDatabase::GetEntryForDisc(CDImage* image)
 {
-  std::string exe_name_code(System::GetGameCodeForImage(image, false));
-  if (!exe_name_code.empty())
+  std::string id(System::GetGameIdFromImage(image, false));
+  if (!id.empty())
   {
-    const Entry* entry = GetEntryForCode(exe_name_code);
+    const Entry* entry = GetEntryForId(id);
     if (entry)
       return entry;
   }
 
-  std::string exe_hash_code(System::GetGameHashCodeForImage(image));
-  if (!exe_hash_code.empty())
+  std::string hash_id(System::GetGameHashIdFromImage(image));
+  if (!hash_id.empty())
   {
-    const Entry* entry = GetEntryForCode(exe_hash_code);
+    const Entry* entry = GetEntryForId(hash_id);
     if (entry)
       return entry;
   }
 
-  Log_WarningPrintf("No entry found for disc (exe code: '%s', hash code: '%s')", exe_name_code.c_str(),
-                    exe_hash_code.c_str());
+  Log_WarningPrintf("No entry found for disc (exe code: '%s', hash code: '%s')", id.c_str(), hash_id.c_str());
   return nullptr;
 }
 
@@ -365,7 +365,8 @@ void GameDatabase::Entry::ApplySettings(Settings& settings, bool display_osd_mes
     {
       Host::AddKeyedOSDMessage(
         "gamedb_disable_pgxp_texture",
-        Host::TranslateStdString("OSDMessage", "PGXP perspective corrected textures disabled by game settings."), osd_duration);
+        Host::TranslateStdString("OSDMessage", "PGXP perspective corrected textures disabled by game settings."),
+        osd_duration);
     }
 
     settings.gpu_pgxp_texture_correction = false;
@@ -378,7 +379,8 @@ void GameDatabase::Entry::ApplySettings(Settings& settings, bool display_osd_mes
     {
       Host::AddKeyedOSDMessage(
         "gamedb_disable_pgxp_texture",
-        Host::TranslateStdString("OSDMessage", "PGXP perspective corrected colors disabled by game settings."), osd_duration);
+        Host::TranslateStdString("OSDMessage", "PGXP perspective corrected colors disabled by game settings."),
+        osd_duration);
     }
 
     settings.gpu_pgxp_color_correction = false;
diff --git a/src/core/game_database.h b/src/core/game_database.h
index bbfc894f8..d393a5d48 100644
--- a/src/core/game_database.h
+++ b/src/core/game_database.h
@@ -86,7 +86,6 @@ void Unload();
 
 const Entry* GetEntryForDisc(CDImage* image);
 const Entry* GetEntryForSerial(const std::string_view& serial);
-const Entry* GetEntryForCode(const std::string_view& code);
 std::string GetSerialForDisc(CDImage* image);
 std::string GetSerialForPath(const char* path);
 
diff --git a/src/core/libcrypt_game_codes.cpp b/src/core/libcrypt_serials.cpp
similarity index 99%
rename from src/core/libcrypt_game_codes.cpp
rename to src/core/libcrypt_serials.cpp
index 78a0aac0e..1c20d55aa 100644
--- a/src/core/libcrypt_game_codes.cpp
+++ b/src/core/libcrypt_serials.cpp
@@ -1,4 +1,4 @@
-#include "libcrypt_game_codes.h"
+#include "libcrypt_serials.h"
 
 namespace LibcryptGameList {
 
diff --git a/src/core/libcrypt_game_codes.h b/src/core/libcrypt_serials.h
similarity index 100%
rename from src/core/libcrypt_game_codes.h
rename to src/core/libcrypt_serials.h
diff --git a/src/core/save_state_version.h b/src/core/save_state_version.h
index ded26d505..9ed21708c 100644
--- a/src/core/save_state_version.h
+++ b/src/core/save_state_version.h
@@ -13,7 +13,7 @@ struct SAVE_STATE_HEADER
   enum : u32
   {
     MAX_TITLE_LENGTH = 128,
-    MAX_GAME_CODE_LENGTH = 32,
+    MAX_SERIAL_LENGTH = 32,
 
     COMPRESSION_TYPE_NONE = 0,
     COMPRESSION_TYPE_ZLIB = 1,
@@ -23,7 +23,7 @@ struct SAVE_STATE_HEADER
   u32 magic;
   u32 version;
   char title[MAX_TITLE_LENGTH];
-  char game_code[MAX_GAME_CODE_LENGTH];
+  char serial[MAX_SERIAL_LENGTH];
 
   u32 media_filename_length;
   u32 offset_to_media_filename;
diff --git a/src/core/settings.cpp b/src/core/settings.cpp
index 8a394c395..e0b754480 100644
--- a/src/core/settings.cpp
+++ b/src/core/settings.cpp
@@ -1112,8 +1112,8 @@ static std::array<const char*, 6> s_memory_card_type_names = {
   {"None", "Shared", "PerGame", "PerGameTitle", "PerGameFileTitle", "NonPersistent"}};
 static std::array<const char*, 6> s_memory_card_type_display_names = {
   {TRANSLATABLE("MemoryCardType", "No Memory Card"), TRANSLATABLE("MemoryCardType", "Shared Between All Games"),
-   TRANSLATABLE("MemoryCardType", "Separate Card Per Game (Game Code)"),
-   TRANSLATABLE("MemoryCardType", "Separate Card Per Game (Game Title)"),
+   TRANSLATABLE("MemoryCardType", "Separate Card Per Game (Serial)"),
+   TRANSLATABLE("MemoryCardType", "Separate Card Per Game (Title)"),
    TRANSLATABLE("MemoryCardType", "Separate Card Per Game (File Title)"),
    TRANSLATABLE("MemoryCardType", "Non-Persistent Card (Do Not Save)")}};
 
@@ -1160,9 +1160,9 @@ std::string Settings::GetSharedMemoryCardPath(u32 slot) const
   return ret;
 }
 
-std::string Settings::GetGameMemoryCardPath(const char* game_code, u32 slot)
+std::string Settings::GetGameMemoryCardPath(const char* serial, u32 slot)
 {
-  return Path::Combine(EmuFolders::MemoryCards, fmt::format("{}_{}.mcd", game_code, slot + 1));
+  return Path::Combine(EmuFolders::MemoryCards, fmt::format("{}_{}.mcd", serial, slot + 1));
 }
 
 static std::array<const char*, 4> s_multitap_enable_mode_names = {{"Disabled", "Port1Only", "Port2Only", "BothPorts"}};
diff --git a/src/core/settings.h b/src/core/settings.h
index a9f95442e..903c6450f 100644
--- a/src/core/settings.h
+++ b/src/core/settings.h
@@ -294,7 +294,7 @@ struct Settings
   std::string GetSharedMemoryCardPath(u32 slot) const;
 
   /// Returns the default path to a memory card for a specific game.
-  static std::string GetGameMemoryCardPath(const char* game_code, u32 slot);
+  static std::string GetGameMemoryCardPath(const char* serial, u32 slot);
 
   static void CPUOverclockPercentToFraction(u32 percent, u32* numerator, u32* denominator);
   static u32 CPUOverclockFractionToPercent(u32 numerator, u32 denominator);
diff --git a/src/core/system.cpp b/src/core/system.cpp
index 26973dc01..61c071f7a 100644
--- a/src/core/system.cpp
+++ b/src/core/system.cpp
@@ -26,7 +26,7 @@
 #include "host_interface_progress_callback.h"
 #include "host_settings.h"
 #include "interrupt_controller.h"
-#include "libcrypt_game_codes.h"
+#include "libcrypt_serials.h"
 #include "mdec.h"
 #include "memory_card.h"
 #include "multitap.h"
@@ -135,7 +135,7 @@ static u32 s_frame_number = 1;
 static u32 s_internal_frame_number = 1;
 
 static std::string s_running_game_path;
-static std::string s_running_game_code;
+static std::string s_running_game_serial;
 static std::string s_running_game_title;
 static bool s_running_bios;
 
@@ -305,9 +305,9 @@ const std::string& System::GetRunningPath()
 {
   return s_running_game_path;
 }
-const std::string& System::GetRunningCode()
+const std::string& System::GetRunningSerial()
 {
-  return s_running_game_code;
+  return s_running_game_serial;
 }
 
 const std::string& System::GetRunningTitle()
@@ -419,16 +419,16 @@ ConsoleRegion System::GetConsoleRegionForDiscRegion(DiscRegion region)
   }
 }
 
-std::string System::GetGameCodeForPath(const char* image_path, bool fallback_to_hash)
+std::string System::GetGameSerialForPath(const char* image_path, bool fallback_to_hash)
 {
   std::unique_ptr<CDImage> cdi = CDImage::Open(image_path, false, nullptr);
   if (!cdi)
     return {};
 
-  return GetGameCodeForImage(cdi.get(), fallback_to_hash);
+  return GetGameIdFromImage(cdi.get(), fallback_to_hash);
 }
 
-std::string System::GetGameCodeForImage(CDImage* cdi, bool fallback_to_hash)
+std::string System::GetGameIdFromImage(CDImage* cdi, bool fallback_to_hash)
 {
   std::string code(GetExecutableNameForImage(cdi));
   if (!code.empty())
@@ -456,10 +456,10 @@ std::string System::GetGameCodeForImage(CDImage* cdi, bool fallback_to_hash)
   if (!fallback_to_hash)
     return {};
 
-  return GetGameHashCodeForImage(cdi);
+  return GetGameHashIdFromImage(cdi);
 }
 
-std::string System::GetGameHashCodeForImage(CDImage* cdi)
+std::string System::GetGameHashIdFromImage(CDImage* cdi)
 {
   ISOReader iso;
   if (!iso.Open(cdi, 1))
@@ -623,12 +623,12 @@ bool System::ReadExecutableFromImage(CDImage* cdi, std::string* out_executable_n
   return ReadExecutableFromImage(iso, out_executable_name, out_executable_data);
 }
 
-DiscRegion System::GetRegionForCode(std::string_view code)
+DiscRegion System::GetRegionForSerial(std::string_view serial)
 {
   std::string prefix;
-  for (size_t pos = 0; pos < code.length(); pos++)
+  for (size_t pos = 0; pos < serial.length(); pos++)
   {
-    const int ch = std::tolower(code[pos]);
+    const int ch = std::tolower(serial[pos]);
     if (ch < 'a' || ch > 'z')
       break;
 
@@ -673,11 +673,11 @@ DiscRegion System::GetRegionForImage(CDImage* cdi)
   if (system_area_region != DiscRegion::Other)
     return system_area_region;
 
-  std::string code = GetGameCodeForImage(cdi, false);
-  if (code.empty())
+  std::string serial = GetGameIdFromImage(cdi, false);
+  if (serial.empty())
     return DiscRegion::Other;
 
-  return GetRegionForCode(code);
+  return GetRegionForSerial(serial);
 }
 
 DiscRegion System::GetRegionForExe(const char* path)
@@ -778,9 +778,9 @@ void System::LoadSettings(bool display_osd_messages)
   Host::LoadSettings(si, lock);
 
   // apply compatibility settings
-  if (g_settings.apply_compatibility_settings && !s_running_game_code.empty())
+  if (g_settings.apply_compatibility_settings && !s_running_game_serial.empty())
   {
-    const GameDatabase::Entry* entry = GameDatabase::GetEntryForSerial(s_running_game_code);
+    const GameDatabase::Entry* entry = GameDatabase::GetEntryForSerial(s_running_game_serial);
     if (entry)
       entry->ApplySettings(g_settings, display_osd_messages);
   }
@@ -828,9 +828,9 @@ bool System::ReloadGameSettings(bool display_osd_messages)
 bool System::UpdateGameSettingsLayer()
 {
   std::unique_ptr<INISettingsInterface> new_interface;
-  if (g_settings.apply_game_settings && !s_running_game_code.empty())
+  if (g_settings.apply_game_settings && !s_running_game_serial.empty())
   {
-    std::string filename(GetGameSettingsPath(s_running_game_code));
+    std::string filename(GetGameSettingsPath(s_running_game_serial));
     if (FileSystem::FileExists(filename.c_str()))
     {
       Log_InfoPrintf("Loading game settings from '%s'...", filename.c_str());
@@ -1039,10 +1039,10 @@ bool System::SaveState(const char* filename, bool backup_existing_save)
 
 bool System::SaveResumeState()
 {
-  if (s_running_game_code.empty())
+  if (s_running_game_serial.empty())
     return false;
 
-  const std::string path(GetGameSaveStateFileName(s_running_game_code, -1));
+  const std::string path(GetGameSaveStateFileName(s_running_game_serial, -1));
   return SaveState(path.c_str(), false);
 }
 
@@ -1430,14 +1430,14 @@ void System::DestroySystem()
 
 void System::ClearRunningGame()
 {
-  s_running_game_code.clear();
+  s_running_game_serial.clear();
   s_running_game_path.clear();
   s_running_game_title.clear();
   s_running_bios = false;
   s_cheat_list.reset();
   s_state = State::Shutdown;
 
-  Host::OnGameChanged(s_running_game_path, s_running_game_code, s_running_game_title);
+  Host::OnGameChanged(s_running_game_path, s_running_game_serial, s_running_game_title);
 
 #ifdef WITH_CHEEVOS
   Achievements::GameChanged(s_running_game_path, nullptr);
@@ -1906,7 +1906,7 @@ bool System::InternalSaveState(ByteStream* state, u32 screenshot_size /* = 256 *
   header.magic = SAVE_STATE_MAGIC;
   header.version = SAVE_STATE_VERSION;
   StringUtil::Strlcpy(header.title, s_running_game_title.c_str(), sizeof(header.title));
-  StringUtil::Strlcpy(header.game_code, s_running_game_code.c_str(), sizeof(header.game_code));
+  StringUtil::Strlcpy(header.serial, s_running_game_serial.c_str(), sizeof(header.serial));
 
   if (g_cdrom.HasMedia())
   {
@@ -2634,7 +2634,7 @@ std::unique_ptr<MemoryCard> System::GetMemoryCardForSlot(u32 slot, MemoryCardTyp
   {
     case MemoryCardType::PerGame:
     {
-      if (s_running_game_code.empty())
+      if (s_running_game_serial.empty())
       {
         Host::AddFormattedOSDMessage(
           5.0f,
@@ -2645,7 +2645,7 @@ std::unique_ptr<MemoryCard> System::GetMemoryCardForSlot(u32 slot, MemoryCardTyp
       }
       else
       {
-        return MemoryCard::Open(g_settings.GetGameMemoryCardPath(s_running_game_code.c_str(), slot));
+        return MemoryCard::Open(g_settings.GetGameMemoryCardPath(s_running_game_serial.c_str(), slot));
       }
     }
 
@@ -2857,13 +2857,13 @@ bool System::InsertMedia(const char* path)
 
   UpdateRunningGame(path, image.get(), false);
   g_cdrom.InsertMedia(std::move(image));
-  Log_InfoPrintf("Inserted media from %s (%s, %s)", s_running_game_path.c_str(), s_running_game_code.c_str(),
+  Log_InfoPrintf("Inserted media from %s (%s, %s)", s_running_game_path.c_str(), s_running_game_serial.c_str(),
                  s_running_game_title.c_str());
   if (g_settings.cdrom_load_image_to_ram)
     g_cdrom.PrecacheMedia();
 
   Host::AddFormattedOSDMessage(10.0f, Host::TranslateString("OSDMessage", "Inserted disc '%s' (%s)."),
-                               s_running_game_title.c_str(), s_running_game_code.c_str());
+                               s_running_game_title.c_str(), s_running_game_serial.c_str());
 
   if (g_settings.HasAnyPerGameMemoryCards())
   {
@@ -2887,7 +2887,7 @@ void System::UpdateRunningGame(const char* path, CDImage* image, bool booting)
     return;
 
   s_running_game_path.clear();
-  s_running_game_code.clear();
+  s_running_game_serial.clear();
   s_running_game_title.clear();
 
   if (path && std::strlen(path) > 0)
@@ -2904,13 +2904,13 @@ void System::UpdateRunningGame(const char* path, CDImage* image, bool booting)
       const GameDatabase::Entry* entry = GameDatabase::GetEntryForDisc(image);
       if (entry)
       {
-        s_running_game_code = entry->serial;
+        s_running_game_serial = entry->serial;
         s_running_game_title = entry->title;
       }
       else
       {
         const std::string display_name(FileSystem::GetDisplayNameFromPath(path));
-        s_running_game_code = GetGameCodeForImage(image, true);
+        s_running_game_serial = GetGameIdFromImage(image, true);
         s_running_game_title = Path::GetFileTitle(display_name);
       }
 
@@ -2923,7 +2923,7 @@ void System::UpdateRunningGame(const char* path, CDImage* image, bool booting)
     }
   }
 
-  g_texture_replacements.SetGameID(s_running_game_code);
+  g_texture_replacements.SetGameID(s_running_game_serial);
 
   s_cheat_list.reset();
   if (g_settings.auto_load_cheats && !Achievements::ChallengeModeActive())
@@ -2932,7 +2932,7 @@ void System::UpdateRunningGame(const char* path, CDImage* image, bool booting)
   UpdateGameSettingsLayer();
   ApplySettings(true);
 
-  Host::OnGameChanged(s_running_game_path, s_running_game_code, s_running_game_title);
+  Host::OnGameChanged(s_running_game_path, s_running_game_serial, s_running_game_title);
 
 #ifdef WITH_CHEEVOS
   if (booting)
@@ -2944,13 +2944,13 @@ void System::UpdateRunningGame(const char* path, CDImage* image, bool booting)
 
 bool System::CheckForSBIFile(CDImage* image)
 {
-  if (s_running_game_code.empty() || !LibcryptGameList::IsLibcryptGameCode(s_running_game_code) || !image ||
+  if (s_running_game_serial.empty() || !LibcryptGameList::IsLibcryptGameCode(s_running_game_serial) || !image ||
       image->HasNonStandardSubchannel())
   {
     return true;
   }
 
-  Log_WarningPrintf("SBI file missing but required for %s (%s)", s_running_game_code.c_str(),
+  Log_WarningPrintf("SBI file missing but required for %s (%s)", s_running_game_serial.c_str(),
                     s_running_game_title.c_str());
 
   if (Host::GetBoolSettingValue("CDROM", "AllowBootingWithoutSBIFile", false))
@@ -2963,7 +2963,7 @@ bool System::CheckForSBIFile(CDImage* image)
           "You are attempting to run a libcrypt protected game without an SBI file:\n\n%s: %s\n\nThe game will "
           "likely not run properly.\n\nPlease check the README for instructions on how to add an SBI file.\n\nDo "
           "you wish to continue?"),
-        s_running_game_code.c_str(), s_running_game_title.c_str())
+        s_running_game_serial.c_str(), s_running_game_title.c_str())
         .c_str());
   }
   else
@@ -2976,7 +2976,7 @@ bool System::CheckForSBIFile(CDImage* image)
           "You are attempting to run a libcrypt protected game without an SBI file:\n\n%s: %s\n\nYour dump is "
           "incomplete, you must add the SBI file to run this game. \n\n"
           "The name of the SBI file must match the name of the disc image."),
-        s_running_game_code.c_str(), s_running_game_title.c_str()));
+        s_running_game_serial.c_str(), s_running_game_title.c_str()));
     return false;
   }
 }
@@ -3695,15 +3695,15 @@ bool System::StartDumpingAudio(const char* filename)
   std::string auto_filename;
   if (!filename)
   {
-    const auto& code = System::GetRunningCode();
-    if (code.empty())
+    const auto& serial = System::GetRunningSerial();
+    if (serial.empty())
     {
       auto_filename = Path::Combine(
         EmuFolders::Dumps, fmt::format("audio" FS_OSPATH_SEPARATOR_STR "{}.wav", GetTimestampStringForFileName()));
     }
     else
     {
-      auto_filename = Path::Combine(EmuFolders::Dumps, fmt::format("audio" FS_OSPATH_SEPARATOR_STR "{}_{}.wav", code,
+      auto_filename = Path::Combine(EmuFolders::Dumps, fmt::format("audio" FS_OSPATH_SEPARATOR_STR "{}_{}.wav", serial,
                                                                    GetTimestampStringForFileName()));
     }
 
@@ -3740,7 +3740,7 @@ bool System::SaveScreenshot(const char* filename /* = nullptr */, bool full_reso
   std::string auto_filename;
   if (!filename)
   {
-    const auto& code = System::GetRunningCode();
+    const auto& code = System::GetRunningSerial();
     const char* extension = "png";
     if (code.empty())
     {
@@ -3779,12 +3779,12 @@ bool System::SaveScreenshot(const char* filename /* = nullptr */, bool full_reso
   return true;
 }
 
-std::string System::GetGameSaveStateFileName(const std::string_view& game_code, s32 slot)
+std::string System::GetGameSaveStateFileName(const std::string_view& serial, s32 slot)
 {
   if (slot < 0)
-    return Path::Combine(EmuFolders::SaveStates, fmt::format("{}_resume.sav", game_code));
+    return Path::Combine(EmuFolders::SaveStates, fmt::format("{}_resume.sav", serial));
   else
-    return Path::Combine(EmuFolders::SaveStates, fmt::format("{}_{}.sav", game_code, slot));
+    return Path::Combine(EmuFolders::SaveStates, fmt::format("{}_{}.sav", serial, slot));
 }
 
 std::string System::GetGlobalSaveStateFileName(s32 slot)
@@ -3795,7 +3795,7 @@ std::string System::GetGlobalSaveStateFileName(s32 slot)
     return Path::Combine(EmuFolders::SaveStates, fmt::format("savestate_{}.sav", slot));
 }
 
-std::vector<SaveStateInfo> System::GetAvailableSaveStates(const char* game_code)
+std::vector<SaveStateInfo> System::GetAvailableSaveStates(const char* serial)
 {
   std::vector<SaveStateInfo> si;
   std::string path;
@@ -3808,11 +3808,11 @@ std::vector<SaveStateInfo> System::GetAvailableSaveStates(const char* game_code)
     si.push_back(SaveStateInfo{std::move(path), sd.ModificationTime, static_cast<s32>(slot), global});
   };
 
-  if (game_code && std::strlen(game_code) > 0)
+  if (serial && std::strlen(serial) > 0)
   {
-    add_path(GetGameSaveStateFileName(game_code, -1), -1, false);
+    add_path(GetGameSaveStateFileName(serial, -1), -1, false);
     for (s32 i = 1; i <= PER_GAME_SAVE_STATE_SLOTS; i++)
-      add_path(GetGameSaveStateFileName(game_code, i), i, false);
+      add_path(GetGameSaveStateFileName(serial, i), i, false);
   }
 
   for (s32 i = 1; i <= GLOBAL_SAVE_STATE_SLOTS; i++)
@@ -3821,10 +3821,10 @@ std::vector<SaveStateInfo> System::GetAvailableSaveStates(const char* game_code)
   return si;
 }
 
-std::optional<SaveStateInfo> System::GetSaveStateInfo(const char* game_code, s32 slot)
+std::optional<SaveStateInfo> System::GetSaveStateInfo(const char* serial, s32 slot)
 {
-  const bool global = (!game_code || game_code[0] == 0);
-  std::string path = global ? GetGlobalSaveStateFileName(slot) : GetGameSaveStateFileName(game_code, slot);
+  const bool global = (!serial || serial[0] == 0);
+  std::string path = global ? GetGlobalSaveStateFileName(slot) : GetGameSaveStateFileName(serial, slot);
 
   FILESYSTEM_STAT_DATA sd;
   if (!FileSystem::StatFile(path.c_str(), &sd))
@@ -3868,8 +3868,8 @@ std::optional<ExtendedSaveStateInfo> System::InternalGetExtendedSaveStateInfo(By
 
   header.title[sizeof(header.title) - 1] = 0;
   ssi.title = header.title;
-  header.game_code[sizeof(header.game_code) - 1] = 0;
-  ssi.game_code = header.game_code;
+  header.serial[sizeof(header.serial) - 1] = 0;
+  ssi.serial = header.serial;
 
   if (header.media_filename_length > 0 &&
       (header.offset_to_media_filename + header.media_filename_length) <= stream->GetSize())
@@ -3899,9 +3899,9 @@ std::optional<ExtendedSaveStateInfo> System::InternalGetExtendedSaveStateInfo(By
   return ssi;
 }
 
-void System::DeleteSaveStates(const char* game_code, bool resume)
+void System::DeleteSaveStates(const char* serial, bool resume)
 {
-  const std::vector<SaveStateInfo> states(GetAvailableSaveStates(game_code));
+  const std::vector<SaveStateInfo> states(GetAvailableSaveStates(serial));
   for (const SaveStateInfo& si : states)
   {
     if (si.global || (!resume && si.slot < 0))
@@ -3982,11 +3982,11 @@ bool System::LoadCheatListFromGameTitle()
 
 bool System::LoadCheatListFromDatabase()
 {
-  if (IsShutdown() || s_running_game_code.empty() || Achievements::ChallengeModeActive())
+  if (IsShutdown() || s_running_game_serial.empty() || Achievements::ChallengeModeActive())
     return false;
 
   std::unique_ptr<CheatList> cl = std::make_unique<CheatList>();
-  if (!cl->LoadFromPackage(s_running_game_code))
+  if (!cl->LoadFromPackage(s_running_game_serial))
     return false;
 
   Log_InfoPrintf("Loaded %u cheats from database.", cl->GetCodeCount());
diff --git a/src/core/system.h b/src/core/system.h
index 145633c74..03322781e 100644
--- a/src/core/system.h
+++ b/src/core/system.h
@@ -45,7 +45,7 @@ struct SaveStateInfo
 struct ExtendedSaveStateInfo
 {
   std::string title;
-  std::string game_code;
+  std::string serial;
   std::string media_path;
   std::time_t timestamp;
 
@@ -98,10 +98,10 @@ ConsoleRegion GetConsoleRegionForDiscRegion(DiscRegion region);
 std::string GetExecutableNameForImage(CDImage* cdi);
 bool ReadExecutableFromImage(CDImage* cdi, std::string* out_executable_name, std::vector<u8>* out_executable_data);
 
-std::string GetGameHashCodeForImage(CDImage* cdi);
-std::string GetGameCodeForImage(CDImage* cdi, bool fallback_to_hash);
-std::string GetGameCodeForPath(const char* image_path, bool fallback_to_hash);
-DiscRegion GetRegionForCode(std::string_view code);
+std::string GetGameHashIdFromImage(CDImage* cdi);
+std::string GetGameIdFromImage(CDImage* cdi, bool fallback_to_hash);
+std::string GetGameSerialForPath(const char* image_path, bool fallback_to_hash);
+DiscRegion GetRegionForSerial(std::string_view serial);
 DiscRegion GetRegionFromSystemArea(CDImage* cdi);
 DiscRegion GetRegionForImage(CDImage* cdi);
 DiscRegion GetRegionForExe(const char* path);
@@ -168,7 +168,7 @@ void FrameDone();
 void IncrementInternalFrameNumber();
 
 const std::string& GetRunningPath();
-const std::string& GetRunningCode();
+const std::string& GetRunningSerial();
 const std::string& GetRunningTitle();
 bool IsRunningBIOS();
 
@@ -317,7 +317,7 @@ void DoFrameStep();
 void DoToggleCheats();
 
 /// Returns the path to a save state file. Specifying an index of -1 is the "resume" save state.
-std::string GetGameSaveStateFileName(const std::string_view& game_code, s32 slot);
+std::string GetGameSaveStateFileName(const std::string_view& serial, s32 slot);
 
 /// Returns the path to a save state file. Specifying an index of -1 is the "resume" save state.
 std::string GetGlobalSaveStateFileName(s32 slot);
@@ -341,16 +341,16 @@ std::optional<ExtendedSaveStateInfo> GetUndoSaveStateInfo();
 bool UndoLoadState();
 
 /// Returns a list of save states for the specified game code.
-std::vector<SaveStateInfo> GetAvailableSaveStates(const char* game_code);
+std::vector<SaveStateInfo> GetAvailableSaveStates(const char* serial);
 
-/// Returns save state info if present. If game_code is null or empty, assumes global state.
-std::optional<SaveStateInfo> GetSaveStateInfo(const char* game_code, s32 slot);
+/// Returns save state info if present. If serial is null or empty, assumes global state.
+std::optional<SaveStateInfo> GetSaveStateInfo(const char* serial, s32 slot);
 
 /// Returns save state info from opened save state stream.
 std::optional<ExtendedSaveStateInfo> GetExtendedSaveStateInfo(const char* path);
 
 /// Deletes save states for the specified game code. If resume is set, the resume state is deleted too.
-void DeleteSaveStates(const char* game_code, bool resume);
+void DeleteSaveStates(const char* serial, bool resume);
 
 /// Returns intended output volume considering fast forwarding.
 s32 GetAudioOutputVolume();
diff --git a/src/duckstation-qt/gamelistmodel.cpp b/src/duckstation-qt/gamelistmodel.cpp
index 72495bf3e..a8db4681f 100644
--- a/src/duckstation-qt/gamelistmodel.cpp
+++ b/src/duckstation-qt/gamelistmodel.cpp
@@ -566,7 +566,7 @@ void GameListModel::loadCommonImages()
 void GameListModel::setColumnDisplayNames()
 {
   m_column_display_names[Column_Type] = tr("Type");
-  m_column_display_names[Column_Serial] = tr("Code");
+  m_column_display_names[Column_Serial] = tr("Serial");
   m_column_display_names[Column_Title] = tr("Title");
   m_column_display_names[Column_FileTitle] = tr("File Title");
   m_column_display_names[Column_Developer] = tr("Developer");
diff --git a/src/duckstation-qt/mainwindow.cpp b/src/duckstation-qt/mainwindow.cpp
index 67dc3d77f..6137c57ef 100644
--- a/src/duckstation-qt/mainwindow.cpp
+++ b/src/duckstation-qt/mainwindow.cpp
@@ -556,10 +556,10 @@ void MainWindow::onSystemDestroyed()
   }
 }
 
-void MainWindow::onRunningGameChanged(const QString& filename, const QString& game_code, const QString& game_title)
+void MainWindow::onRunningGameChanged(const QString& filename, const QString& game_serial, const QString& game_title)
 {
   m_current_game_title = game_title.toStdString();
-  m_current_game_code = game_code.toStdString();
+  m_current_game_serial = game_serial.toStdString();
 
   updateWindowTitle();
   // updateSaveStateMenus(path, serial, crc);
@@ -770,10 +770,10 @@ static QString FormatTimestampForSaveStateMenu(u64 timestamp)
   return qtime.toString(QLocale::system().dateTimeFormat(QLocale::ShortFormat));
 }
 
-void MainWindow::populateLoadStateMenu(const char* game_code, QMenu* menu)
+void MainWindow::populateLoadStateMenu(const char* game_serial, QMenu* menu)
 {
-  auto add_slot = [this, game_code, menu](const QString& title, const QString& empty_title, bool global, s32 slot) {
-    std::optional<SaveStateInfo> ssi = System::GetSaveStateInfo(global ? nullptr : game_code, slot);
+  auto add_slot = [this, game_serial, menu](const QString& title, const QString& empty_title, bool global, s32 slot) {
+    std::optional<SaveStateInfo> ssi = System::GetSaveStateInfo(global ? nullptr : game_serial, slot);
 
     const QString menu_title =
       ssi.has_value() ? title.arg(slot).arg(FormatTimestampForSaveStateMenu(ssi->timestamp)) : empty_title.arg(slot);
@@ -802,7 +802,7 @@ void MainWindow::populateLoadStateMenu(const char* game_code, QMenu* menu)
   connect(load_from_state, &QAction::triggered, g_emu_thread, &EmuThread::undoLoadState);
   menu->addSeparator();
 
-  if (game_code && std::strlen(game_code) > 0)
+  if (game_serial && std::strlen(game_serial) > 0)
   {
     for (u32 slot = 1; slot <= System::PER_GAME_SAVE_STATE_SLOTS; slot++)
       add_slot(tr("Game Save %1 (%2)"), tr("Game Save %1 (Empty)"), false, static_cast<s32>(slot));
@@ -814,10 +814,10 @@ void MainWindow::populateLoadStateMenu(const char* game_code, QMenu* menu)
     add_slot(tr("Global Save %1 (%2)"), tr("Global Save %1 (Empty)"), true, static_cast<s32>(slot));
 }
 
-void MainWindow::populateSaveStateMenu(const char* game_code, QMenu* menu)
+void MainWindow::populateSaveStateMenu(const char* game_serial, QMenu* menu)
 {
-  auto add_slot = [game_code, menu](const QString& title, const QString& empty_title, bool global, s32 slot) {
-    std::optional<SaveStateInfo> ssi = System::GetSaveStateInfo(global ? nullptr : game_code, slot);
+  auto add_slot = [game_serial, menu](const QString& title, const QString& empty_title, bool global, s32 slot) {
+    std::optional<SaveStateInfo> ssi = System::GetSaveStateInfo(global ? nullptr : game_serial, slot);
 
     const QString menu_title =
       ssi.has_value() ? title.arg(slot).arg(FormatTimestampForSaveStateMenu(ssi->timestamp)) : empty_title.arg(slot);
@@ -841,7 +841,7 @@ void MainWindow::populateSaveStateMenu(const char* game_code, QMenu* menu)
   });
   menu->addSeparator();
 
-  if (game_code && std::strlen(game_code) > 0)
+  if (game_serial && std::strlen(game_serial) > 0)
   {
     for (u32 slot = 1; slot <= System::PER_GAME_SAVE_STATE_SLOTS; slot++)
       add_slot(tr("Game Save %1 (%2)"), tr("Game Save %1 (Empty)"), false, static_cast<s32>(slot));
@@ -1094,12 +1094,12 @@ void MainWindow::onChangeDiscMenuAboutToHide()
 
 void MainWindow::onLoadStateMenuAboutToShow()
 {
-  populateLoadStateMenu(m_current_game_code.c_str(), m_ui.menuLoadState);
+  populateLoadStateMenu(m_current_game_serial.c_str(), m_ui.menuLoadState);
 }
 
 void MainWindow::onSaveStateMenuAboutToShow()
 {
-  populateSaveStateMenu(m_current_game_code.c_str(), m_ui.menuSaveState);
+  populateSaveStateMenu(m_current_game_serial.c_str(), m_ui.menuSaveState);
 }
 
 void MainWindow::onCheatsMenuAboutToShow()
@@ -1161,7 +1161,7 @@ void MainWindow::onViewGamePropertiesActionTriggered()
     return;
 
   const std::string& path = System::GetRunningPath();
-  const std::string& serial = System::GetRunningCode();
+  const std::string& serial = System::GetRunningSerial();
   if (path.empty() || serial.empty())
     return;
 
@@ -2375,7 +2375,7 @@ bool MainWindow::requestShutdown(bool allow_confirm /* = true */, bool allow_sav
     return true;
 
   // If we don't have a serial, we can't save state.
-  allow_save_to_state &= !m_current_game_code.empty();
+  allow_save_to_state &= !m_current_game_serial.empty();
   save_state &= allow_save_to_state;
 
   // Only confirm on UI thread because we need to display a msgbox.
diff --git a/src/duckstation-qt/mainwindow.h b/src/duckstation-qt/mainwindow.h
index e1590edfd..be3760c02 100644
--- a/src/duckstation-qt/mainwindow.h
+++ b/src/duckstation-qt/mainwindow.h
@@ -118,7 +118,7 @@ private Q_SLOTS:
   void onSystemDestroyed();
   void onSystemPaused();
   void onSystemResumed();
-  void onRunningGameChanged(const QString& filename, const QString& game_code, const QString& game_title);
+  void onRunningGameChanged(const QString& filename, const QString& game_serial, const QString& game_title);
   void onAchievementsChallengeModeChanged();
   void onApplicationStateChanged(Qt::ApplicationState state);
 
@@ -221,8 +221,8 @@ private:
   /// Fills menu with save state info and handlers.
   void populateGameListContextMenu(const GameList::Entry* entry, QWidget* parent_window, QMenu* menu);
 
-  void populateLoadStateMenu(const char* game_code, QMenu* menu);
-  void populateSaveStateMenu(const char* game_code, QMenu* menu);
+  void populateLoadStateMenu(const char* game_serial, QMenu* menu);
+  void populateSaveStateMenu(const char* game_serial, QMenu* menu);
 
   /// Fills menu with the current playlist entries. The disc index is marked as checked.
   void populateChangeDiscSubImageMenu(QMenu* menu, QActionGroup* action_group);
@@ -257,7 +257,7 @@ private:
   DebuggerWindow* m_debugger_window = nullptr;
 
   std::string m_current_game_title;
-  std::string m_current_game_code;
+  std::string m_current_game_serial;
 
   bool m_was_paused_by_focus_loss = false;
   bool m_open_debugger_on_start = false;
diff --git a/src/duckstation-qt/qthost.cpp b/src/duckstation-qt/qthost.cpp
index 9ac2cb80b..deaa36703 100644
--- a/src/duckstation-qt/qthost.cpp
+++ b/src/duckstation-qt/qthost.cpp
@@ -1096,11 +1096,11 @@ void EmuThread::loadState(bool global, qint32 slot)
   }
 
   // shouldn't even get here if we don't have a running game
-  if (!global && System::GetRunningCode().empty())
+  if (!global && System::GetRunningSerial().empty())
     return;
 
   bootOrLoadState(global ? System::GetGlobalSaveStateFileName(slot) :
-                           System::GetGameSaveStateFileName(System::GetRunningCode(), slot));
+                           System::GetGameSaveStateFileName(System::GetRunningSerial(), slot));
 }
 
 void EmuThread::saveState(const QString& filename, bool block_until_done /* = false */)
@@ -1127,11 +1127,11 @@ void EmuThread::saveState(bool global, qint32 slot, bool block_until_done /* = f
     return;
   }
 
-  if (!global && System::GetRunningCode().empty())
+  if (!global && System::GetRunningSerial().empty())
     return;
 
   System::SaveState((global ? System::GetGlobalSaveStateFileName(slot) :
-                              System::GetGameSaveStateFileName(System::GetRunningCode(), slot))
+                              System::GetGameSaveStateFileName(System::GetRunningSerial(), slot))
                       .c_str(),
                     g_settings.create_save_state_backups);
 }
diff --git a/src/duckstation-qt/qthost.h b/src/duckstation-qt/qthost.h
index 6572217d1..b506f9122 100644
--- a/src/duckstation-qt/qthost.h
+++ b/src/duckstation-qt/qthost.h
@@ -134,7 +134,7 @@ Q_SIGNALS:
   void displaySizeRequested(qint32 width, qint32 height);
   void focusDisplayWidgetRequested();
   void destroyDisplayRequested();
-  void runningGameChanged(const QString& filename, const QString& game_code, const QString& game_title);
+  void runningGameChanged(const QString& filename, const QString& game_serial, const QString& game_title);
   void inputProfileLoaded();
   void mouseModeRequested(bool relative, bool hide_cursor);
   void achievementsRefreshed(quint32 id, const QString& game_info_string, quint32 total, quint32 points);
diff --git a/src/duckstation-regtest/regtest_host_interface.cpp b/src/duckstation-regtest/regtest_host_interface.cpp
index 7149b7c39..a26ef36b6 100644
--- a/src/duckstation-regtest/regtest_host_interface.cpp
+++ b/src/duckstation-regtest/regtest_host_interface.cpp
@@ -103,7 +103,7 @@ void RegTestHostInterface::GetGameInfo(const char* path, CDImage* image, std::st
       return;
     }
 
-    *code = System::GetGameCodeForImage(image, true);
+    *code = System::GetGameIdFromImage(image, true);
   }
 
   *title = Path::GetFileTitle(path);
@@ -181,13 +181,13 @@ void RegTestHostInterface::UpdateSettings()
   SettingsInterface& si = m_settings_interface;
   HostInterface::LoadSettings(si);
 
-  const std::string& code = System::GetRunningCode();
-  if (!code.empty())
+  const std::string& serial = System::GetRunningSerial();
+  if (!serial.empty())
   {
-    const GameSettings::Entry* entry = s_game_settings_db.GetEntry(code);
+    const GameSettings::Entry* entry = s_game_settings_db.GetEntry(serial);
     if (entry)
     {
-      Log_InfoPrintf("Applying game settings for '%s'", code.c_str());
+      Log_InfoPrintf("Applying game settings for '%s'", serial.c_str());
       entry->ApplySettings(true);
     }
   }
diff --git a/src/frontend-common/common_host.cpp b/src/frontend-common/common_host.cpp
index e78faa06b..69ef1af97 100644
--- a/src/frontend-common/common_host.cpp
+++ b/src/frontend-common/common_host.cpp
@@ -536,7 +536,7 @@ void CommonHost::UpdateDiscordPresence(bool rich_presence_only)
   if (!System::IsShutdown())
   {
     details_string.AppendFormattedString("%s (%s)", System::GetRunningTitle().c_str(),
-                                         System::GetRunningCode().c_str());
+                                         System::GetRunningSerial().c_str());
   }
   else
   {
@@ -600,7 +600,7 @@ static void HotkeyLoadStateSlot(bool global, s32 slot)
   if (!System::IsValid())
     return;
 
-  if (!global && System::GetRunningCode().empty())
+  if (!global && System::GetRunningSerial().empty())
   {
     Host::AddKeyedOSDMessage("LoadState", TRANSLATABLE("OSDMessage", "Cannot load state for game without serial."),
                              5.0f);
@@ -608,7 +608,7 @@ static void HotkeyLoadStateSlot(bool global, s32 slot)
   }
 
   std::string path(global ? System::GetGlobalSaveStateFileName(slot) :
-                            System::GetGameSaveStateFileName(System::GetRunningCode(), slot));
+                            System::GetGameSaveStateFileName(System::GetRunningSerial(), slot));
   if (!FileSystem::FileExists(path.c_str()))
   {
     Host::AddKeyedOSDMessage("LoadState",
@@ -624,7 +624,7 @@ static void HotkeySaveStateSlot(bool global, s32 slot)
   if (!System::IsValid())
     return;
 
-  if (!global && System::GetRunningCode().empty())
+  if (!global && System::GetRunningSerial().empty())
   {
     Host::AddKeyedOSDMessage("LoadState", TRANSLATABLE("OSDMessage", "Cannot save state for game without serial."),
                              5.0f);
@@ -632,7 +632,7 @@ static void HotkeySaveStateSlot(bool global, s32 slot)
   }
 
   std::string path(global ? System::GetGlobalSaveStateFileName(slot) :
-                            System::GetGameSaveStateFileName(System::GetRunningCode(), slot));
+                            System::GetGameSaveStateFileName(System::GetRunningSerial(), slot));
   System::SaveState(path.c_str(), g_settings.create_save_state_backups);
 }
 
diff --git a/src/frontend-common/fullscreen_ui.cpp b/src/frontend-common/fullscreen_ui.cpp
index db3a77935..c7da2b1e8 100644
--- a/src/frontend-common/fullscreen_ui.cpp
+++ b/src/frontend-common/fullscreen_ui.cpp
@@ -625,7 +625,7 @@ void FullscreenUI::OnRunningGameChanged()
     return;
 
   const std::string& path = System::GetRunningPath();
-  const std::string& serial = System::GetRunningCode();
+  const std::string& serial = System::GetRunningSerial();
   if (!serial.empty())
     s_current_game_subtitle = fmt::format("{0} - {1}", serial, Path::GetFileName(path));
   else
@@ -2006,14 +2006,14 @@ void FullscreenUI::SwitchToGameSettingsForSerial(const std::string_view& serial)
 
 void FullscreenUI::SwitchToGameSettings()
 {
-  if (System::GetRunningCode().empty())
+  if (System::GetRunningSerial().empty())
     return;
 
   auto lock = GameList::GetLock();
   const GameList::Entry* entry = GameList::GetEntryForPath(System::GetRunningPath().c_str());
   if (!entry)
   {
-    SwitchToGameSettingsForSerial(System::GetRunningCode());
+    SwitchToGameSettingsForSerial(System::GetRunningSerial());
     return;
   }
 
@@ -3833,11 +3833,11 @@ void FullscreenUI::DrawPauseMenu(MainWindowType type)
   // title info
   {
     const std::string& title = System::GetRunningTitle();
-    const std::string& code = System::GetRunningCode();
+    const std::string& serial = System::GetRunningSerial();
 
     SmallString subtitle;
-    if (!code.empty())
-      subtitle.Format("%s - ", code.c_str());
+    if (!serial.empty())
+      subtitle.Format("%s - ", serial.c_str());
     subtitle.AppendString(Path::GetFileName(System::GetRunningPath()));
 
     const ImVec2 title_size(
@@ -3909,7 +3909,7 @@ void FullscreenUI::DrawPauseMenu(MainWindowType type)
       case PauseSubMenu::None:
       {
         // NOTE: Menu close must come first, because otherwise VM destruction options will race.
-        const bool has_game = System::IsValid() && !System::GetRunningCode().empty();
+        const bool has_game = System::IsValid() && !System::GetRunningSerial().empty();
 
         if (ActiveButton(ICON_FA_PLAY " Resume Game", false) || WantsToCloseMenu())
           ClosePauseMenu();
@@ -3933,7 +3933,7 @@ void FullscreenUI::DrawPauseMenu(MainWindowType type)
         }
 
         if (ActiveButton(ICON_FA_FROWN_OPEN " Cheat List", false,
-                         !System::GetRunningCode().empty() && !Achievements::ChallengeModeActive()))
+                         !System::GetRunningSerial().empty() && !Achievements::ChallengeModeActive()))
         {
           s_current_main_window = MainWindowType::None;
           DoCheatsMenu();
@@ -4070,7 +4070,7 @@ bool FullscreenUI::InitializeSaveStateListEntry(SaveStateListEntry* li, const st
     li->title = StringUtil::StdStringFromFormat("%s Slot %d##game_slot_%d", ssi->title.c_str(), slot, slot);
   }
 
-  li->summary = fmt::format("{} - Saved {:%c}", ssi->game_code.c_str(), fmt::localtime(ssi->timestamp));
+  li->summary = fmt::format("{} - Saved {:%c}", ssi->serial.c_str(), fmt::localtime(ssi->timestamp));
   li->timestamp = ssi->timestamp;
   li->slot = slot;
   li->path = std::move(filename);
@@ -4171,7 +4171,7 @@ bool FullscreenUI::OpenSaveStateSelector(bool is_loading)
   s_save_state_selector_game_path = {};
   s_save_state_selector_loading = is_loading;
   s_save_state_selector_resuming = false;
-  if (PopulateSaveStateListEntries(System::GetRunningTitle().c_str(), System::GetRunningCode().c_str()) > 0)
+  if (PopulateSaveStateListEntries(System::GetRunningTitle().c_str(), System::GetRunningSerial().c_str()) > 0)
   {
     s_save_state_selector_open = true;
     return true;
@@ -4435,7 +4435,7 @@ void FullscreenUI::DoSaveState(s32 slot, bool global)
       return;
 
     std::string filename(global ? System::GetGlobalSaveStateFileName(slot) :
-                                  System::GetGameSaveStateFileName(System::GetRunningCode(), slot));
+                                  System::GetGameSaveStateFileName(System::GetRunningSerial(), slot));
     System::SaveState(filename.c_str(), g_settings.create_save_state_backups);
   });
 }
diff --git a/src/frontend-common/game_list.cpp b/src/frontend-common/game_list.cpp
index 259c7c36b..e84217bbc 100644
--- a/src/frontend-common/game_list.cpp
+++ b/src/frontend-common/game_list.cpp
@@ -197,7 +197,7 @@ bool GameList::GetDiscListEntry(const std::string& path, Entry* entry)
     const std::string display_name(FileSystem::GetDisplayNameFromPath(path));
 
     // no game code, so use the filename title
-    entry->serial = System::GetGameCodeForImage(cdi.get(), true);
+    entry->serial = System::GetGameIdFromImage(cdi.get(), true);
     entry->title = Path::GetFileTitle(display_name);
     entry->compatibility = GameDatabase::CompatibilityRating::Unknown;
     entry->release_date = 0;
@@ -211,7 +211,7 @@ bool GameList::GetDiscListEntry(const std::string& path, Entry* entry)
   // region detection
   entry->region = System::GetRegionFromSystemArea(cdi.get());
   if (entry->region == DiscRegion::Other)
-    entry->region = System::GetRegionForCode(entry->serial);
+    entry->region = System::GetRegionForSerial(entry->serial);
 
   if (cdi->HasSubImages())
   {
diff --git a/src/frontend-common/imgui_overlays.cpp b/src/frontend-common/imgui_overlays.cpp
index 8a7e1708b..ac252085b 100644
--- a/src/frontend-common/imgui_overlays.cpp
+++ b/src/frontend-common/imgui_overlays.cpp
@@ -162,7 +162,8 @@ void ImGuiManager::DrawPerformanceOverlay()
       DRAW_LINE(fixed_font, text, IM_COL32(255, 255, 255, 255));
 
       text.Clear();
-      if (g_settings.cpu_overclock_active || (!g_settings.IsUsingRecompiler() || g_settings.cpu_recompiler_icache || g_settings.cpu_recompiler_memory_exceptions))
+      if (g_settings.cpu_overclock_active || (!g_settings.IsUsingRecompiler() || g_settings.cpu_recompiler_icache ||
+                                              g_settings.cpu_recompiler_memory_exceptions))
       {
         first = true;
         text.AppendString("CPU[");
@@ -251,7 +252,8 @@ void ImGuiManager::DrawPerformanceOverlay()
 void ImGuiManager::DrawEnhancementsOverlay()
 {
   LargeString text;
-  text.AppendFmtString("{} {}", Settings::GetConsoleRegionName(System::GetRegion()), Settings::GetRendererName(g_gpu->GetRendererType()));
+  text.AppendFmtString("{} {}", Settings::GetConsoleRegionName(System::GetRegion()),
+                       Settings::GetRendererName(g_gpu->GetRendererType()));
 
   if (g_settings.rewind_enable)
     text.AppendFormattedString(" RW=%g/%u", g_settings.rewind_save_frequency, g_settings.rewind_save_slots);
@@ -407,7 +409,7 @@ namespace SaveStateSelectorUI {
 struct ListEntry
 {
   std::string path;
-  std::string game_code;
+  std::string serial;
   std::string title;
   std::string formatted_timestamp;
   std::unique_ptr<GPUTexture> preview_texture;
@@ -462,11 +464,11 @@ void SaveStateSelectorUI::RefreshList()
   if (System::IsShutdown())
     return;
 
-  if (!System::GetRunningCode().empty())
+  if (!System::GetRunningSerial().empty())
   {
     for (s32 i = 1; i <= System::PER_GAME_SAVE_STATE_SLOTS; i++)
     {
-      std::string path(System::GetGameSaveStateFileName(System::GetRunningCode(), i));
+      std::string path(System::GetGameSaveStateFileName(System::GetRunningSerial(), i));
       std::optional<ExtendedSaveStateInfo> ssi = System::GetExtendedSaveStateInfo(path.c_str());
 
       ListEntry li;
@@ -551,7 +553,7 @@ void SaveStateSelectorUI::InitializeListEntry(ListEntry* li, ExtendedSaveStateIn
                                               bool global)
 {
   li->title = std::move(ssi->title);
-  li->game_code = std::move(ssi->game_code);
+  li->serial = std::move(ssi->serial);
   li->path = std::move(path);
   li->formatted_timestamp = fmt::format("{:%c}", fmt::localtime(ssi->timestamp));
   li->slot = slot;
@@ -564,9 +566,9 @@ void SaveStateSelectorUI::InitializeListEntry(ListEntry* li, ExtendedSaveStateIn
   {
     if (ssi && !ssi->screenshot_data.empty())
     {
-      li->preview_texture = g_host_display->CreateTexture(ssi->screenshot_width, ssi->screenshot_height, 1, 1, 1,
-                                                          GPUTexture::Format::RGBA8, ssi->screenshot_data.data(),
-                                                          sizeof(u32) * ssi->screenshot_width, false);
+      li->preview_texture =
+        g_host_display->CreateTexture(ssi->screenshot_width, ssi->screenshot_height, 1, 1, 1, GPUTexture::Format::RGBA8,
+                                      ssi->screenshot_data.data(), sizeof(u32) * ssi->screenshot_width, false);
     }
     else
     {
@@ -583,7 +585,7 @@ void SaveStateSelectorUI::InitializeListEntry(ListEntry* li, ExtendedSaveStateIn
 void SaveStateSelectorUI::InitializePlaceholderListEntry(ListEntry* li, std::string path, s32 slot, bool global)
 {
   li->title = Host::TranslateStdString("SaveStateSelectorUI", "No Save State");
-  std::string().swap(li->game_code);
+  std::string().swap(li->serial);
   li->path = std::move(path);
   std::string().swap(li->formatted_timestamp);
   li->slot = slot;
@@ -591,9 +593,9 @@ void SaveStateSelectorUI::InitializePlaceholderListEntry(ListEntry* li, std::str
 
   if (g_host_display)
   {
-    li->preview_texture = g_host_display->CreateTexture(PLACEHOLDER_ICON_WIDTH, PLACEHOLDER_ICON_HEIGHT, 1, 1, 1,
-                                                        GPUTexture::Format::RGBA8, PLACEHOLDER_ICON_DATA,
-                                                        sizeof(u32) * PLACEHOLDER_ICON_WIDTH, false);
+    li->preview_texture =
+      g_host_display->CreateTexture(PLACEHOLDER_ICON_WIDTH, PLACEHOLDER_ICON_HEIGHT, 1, 1, 1, GPUTexture::Format::RGBA8,
+                                    PLACEHOLDER_ICON_DATA, sizeof(u32) * PLACEHOLDER_ICON_WIDTH, false);
     if (!li->preview_texture)
       Log_ErrorPrintf("Failed to upload save state image to GPU");
   }
@@ -657,13 +659,13 @@ void SaveStateSelectorUI::Draw()
         {
           ImGui::Text(Host::TranslateString("SaveStateSelectorUI", "Global Slot %d"), entry.slot);
         }
-        else if (entry.game_code.empty())
+        else if (entry.serial.empty())
         {
           ImGui::Text(Host::TranslateString("SaveStateSelectorUI", "Game Slot %d"), entry.slot);
         }
         else
         {
-          ImGui::Text(Host::TranslateString("SaveStateSelectorUI", "%s Slot %d"), entry.game_code.c_str(), entry.slot);
+          ImGui::Text(Host::TranslateString("SaveStateSelectorUI", "%s Slot %d"), entry.serial.c_str(), entry.slot);
         }
         ImGui::TextUnformatted(entry.title.c_str());
         ImGui::TextUnformatted(entry.formatted_timestamp.c_str());