Open Syobon Action is an open source version of Syobon Action. Syobon Action (also known as Cat Mario) is a 2D Japanese freeware video game notoriously known on the Internet for its extremely difficult levels.

Ported to Dingux by Poligrafowicz.

http://boards.dingoonity.org/dingux-releases/open-syobon-action-for-dingux/