Plot: Photo Dojo is a fighting video game developed and published by Nintendo for the Nintendo DSi and Nintendo 3DS's DSiWare and eShop download services. 200 DSi Points are required to download Photo Dojo in the DSi Shop. In North America, the game was free to download until June 11, 2010. Wikipedia
Plot: Dark Void Zero is a platform video game developed by Other Ocean Interactive's Newfoundland studio and released by Capcom for DSiWare download service. Wikipedia
Plot: Cave Story is a 2004 Metroidvania platform-adventure game for Microsoft Windows. It was developed over five years by Japanese developer Daisuke Pixel Amaya in his free time. Cave Story features 2D platform mechanics and is reminiscent of the games Amaya played in his youth, such as Metroid and Castlevania...
Plot: Earthworm Jim is a series of side-scrolling platform games, featuring an earthworm named Jim, who wears a robotic suit and battles evil. The series is noted for its platforming and shooting gameplay, surrealist humor, and edgy art style. Wikipedia