Taisei is a fan-made Open Source clone of the TÅhÅ series.
It is a shoot â€™em up game with lots of bullets (the genre is called bullet hell). It doesnâ€™t aim to rebuild a particular installment of the TÅhÅ games but is rather an original game set in the world of TÅhÅ. Enjoy dodging through 6 stages full of new bullet patterns on four difficulty levels.
If you have never played TÅhÅ before, you can have a look at the manual for an explanation of the controls and game. The game is mostly done and very playable, so feel free to give it a try.