Sputzkaizer, the same guy behing the Fate/Stay Night DS version has just released Touhou DS: a Nintendo port of one of the doujin games related to the legendary Touhou Universe created by a Japanese game maker ZUN who actually is in charge of all the graphics, music, and programming of these danmaku shooting games. Strange fact is that ZUN actually works for TAITO but it seems that the company that inveted the Shooting Games with Space Invaders was niot interested in this (super succesfull) project... 
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