diff --git a/es-app/assets/Windows_Portable_README.txt b/es-app/assets/Windows_Portable_README.txt
index b04af61e2..db8495226 100644
--- a/es-app/assets/Windows_Portable_README.txt
+++ b/es-app/assets/Windows_Portable_README.txt
@@ -64,6 +64,7 @@ Emulators\PPSSPP\PPSSPPWindows64.exe
 Emulators\PrimeHack\Dolphin.exe
 Emulators\Project64\Project64.exe
 Emulators\redream\redream.exe
+Emulators\RMG\RMG.exe
 Emulators\RPCS3\rpcs3.exe
 Emulators\ruffle\ruffle.exe
 Emulators\ryujinx\Ryujinx.exe
diff --git a/resources/systems/windows/es_find_rules.xml b/resources/systems/windows/es_find_rules.xml
index 47feb85bf..5008f47b1 100644
--- a/resources/systems/windows/es_find_rules.xml
+++ b/resources/systems/windows/es_find_rules.xml
@@ -480,6 +480,18 @@
             <entry>%ESPATH%\..\redream\redream.exe</entry>
         </rule>
     </emulator>
+    <emulator name="ROSALIES-MUPEN-GUI">
+        <!-- Nintendo 64 emulator Rosalie's Mupen GUI -->
+        <rule type="systempath">
+            <entry>RMG.exe</entry>
+        </rule>
+        <rule type="staticpath">
+            <entry>~\AppData\Local\Programs\Rosalie's Mupen GUI\RMG.exe</entry>
+            <entry>%ESPATH%\Emulators\RMG\RMG.exe</entry>
+            <entry>%ESPATH%\RMG\RMG.exe</entry>
+            <entry>%ESPATH%\..\RMG\RMG.exe</entry>
+        </rule>
+    </emulator>
     <emulator name="RPCS3">
         <!-- Sony PlayStation 3 emulator RPCS3 -->
         <rule type="systempath">
diff --git a/resources/systems/windows/es_find_rules_portable.xml b/resources/systems/windows/es_find_rules_portable.xml
index 644b778c9..005640cd4 100644
--- a/resources/systems/windows/es_find_rules_portable.xml
+++ b/resources/systems/windows/es_find_rules_portable.xml
@@ -323,6 +323,14 @@
             <entry>%ESPATH%\..\redream\redream.exe</entry>
         </rule>
     </emulator>
+    <emulator name="ROSALIES-MUPEN-GUI">
+        <!-- Nintendo 64 emulator Rosalie's Mupen GUI -->
+        <rule type="staticpath">
+            <entry>%ESPATH%\Emulators\RMG\RMG.exe</entry>
+            <entry>%ESPATH%\RMG\RMG.exe</entry>
+            <entry>%ESPATH%\..\RMG\RMG.exe</entry>
+        </rule>
+    </emulator>
     <emulator name="RPCS3">
         <!-- Sony PlayStation 3 emulator RPCS3 -->
         <rule type="staticpath">
diff --git a/resources/systems/windows/es_systems.xml b/resources/systems/windows/es_systems.xml
index 61d569808..40490195d 100644
--- a/resources/systems/windows/es_systems.xml
+++ b/resources/systems/windows/es_systems.xml
@@ -898,6 +898,7 @@
         <command label="Mupen64Plus (Standalone)">%EMULATOR_MUPEN64PLUS% --fullscreen %ROM%</command>
         <command label="ParaLLEl N64">%EMULATOR_RETROARCH% -L %CORE_RETROARCH%\parallel_n64_libretro.dll %ROM%</command>
         <command label="simple64 (Standalone)">%EMULATOR_SIMPLE64% --nogui %ROM%</command>
+        <command label="Rosalie's Mupen GUI (Standalone)">%EMULATOR_ROSALIES-MUPEN-GUI% %ROM%</command>
         <command label="Project64 (Standalone)">%EMULATOR_PROJECT64% %ROM%</command>
         <command label="ares (Standalone)">%EMULATOR_ARES% --fullscreen --system "Nintendo 64" %ROM%</command>
         <platform>n64</platform>