Popular games published by company Keropyon

Crimson Alive: Genesis of the Heretic is a freeware 2D competitive fighting game made by doujin circle Keropyon and exclusively released for Microsoft Windows in 2003. It is also the first installment of Crimson Alive series.

Crimson Alive: Extreme Encounter is a Japanese 2D fighting game in a fantasy/sci-fi world. The story is all in Japanese, menus and short texts before fights are in English. It's a typical "Doujin" game for hobbyists. The Game is based on a 2D Fighter Maker engine and manga alike graphics.

Crimson Alive: Burst Again is a freeware 2D competitive fighting game made by doujin circle Keropyon and exclusively released for Microsoft Windows in 2003. It is also the second installment of Crimson Alive series.