5 Designer : Daisuke Amaya Developer : Studio Pixel Type : Freeware platform-adventure Origin : Japan English translation : Aeon Genesis Translations Year of first release : 2004 The game focuses on an amnesiac protagonist who awakens in a cave. Through his explorations, he discovers a plot by the Doctor, a megalomaniac who intends to force the inhabitants of the cave to fight for him in his bid to conquer the world. The protagonist is thrust into the position of savior as he endeavors to defeat the Doctor.