My open source video game for Open Jam: 
This year, I joined in on the Open Jam, a “game jam” in which programmers around the world dedicate a weekend to create open source games. The jam is essentially an excuse to spend a weekend coding, and the majority of the games that come out of the challenge are small distractions rather than something you’re likely to play for hours on end. But they’re fun, diverse, and open source, and that’s a pretty good feature list for a game.
read more: Opensource.com klaatu
Supporting Open Source.
Have you tried: Diving with Sharks?