Linux: Source code is included with both versions. Just use ‘gem install gosu’, ‘gem install ruby-opengl’ and run ‘ruby Main.rb’. You can do this. 😛
It’s all based on the arrow keys and should be pretty intuitive. The game is limited to two minutes of continuous play.
Sorry for being somewhat late. Had to suffer through a few last minute shutdowns.
Update 09-12-08: Media loading should work on Windows now. (Ouch.)