Touhou Concealed the Conclusion (Touhou Danmakufu)
Durr I can't believe I hadn't upload which is probably one of the most famous fanmade games, Concealed the conclusion is a really good fanmade touhou just like most of the official ones, it's also a danmaku, really hard, My favorite part of this game is the story, even if it's pretty sad, I won't spoil it but I can tell you a little bit, you play this game as Marisa.
Oh yeah! This also includes Touhou Danmakufu, the engine to make danmaku games, why? well because you need it to play concealed the conclusion which was made in it XD, anyway enjoy!