I recently participated in LudumDare 33 and I made a little game called Lumberjack Monster
In the game you are a Lumberjack and your job is to cut down trees, but the trees won't go without a fight!
I made it for Windows originally then ported it to Mac after the competition. But since porting it to Mac was such a fustrating experience I don't really want to try and port it to Linix. Next time I will make sure my base code is setup to do all platforms more easily.
If you want to check out the game the competition page is here. And if you're interested in game development I would definatley give LudumDare and go, it's a lot of fun!
Another update on our space game should be soon!