A downloadable game for Windows and Mac OS X
You are a bunny.
Happy Birthday Kyle Reimergartin!
Download the game and unzip.
Hopefully it should run on Windows computers, XP+.
Regarding Macs: I recently upgraded to Mavericks, and I'm not sure what this game targets anymore. It's built for Snow Leopard... :/
Your graphics card must support OpenGL 2.0.