Cave Story is a freeware platform-adventure video game released in 2004 for the PC developed by Daisuke "Pixel" Amaya.
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.
The game is also available on WiiWare, DSiWare, and Nintendo 3DS.