Pretty fun little episodic shooter. Buying the second episode gets you the source code, as well (EDIT: and modding tools!).
I had fun with it, and the higher levels of difficulty can get a little tougher than you'd expect.
Haven't tried multiplayer, as I don't have anyone to play with, though.
http://www.steel-storm.com/
EDIT: First episode is free! Forgot to mention that. >.>
EDIT2: Also forgot to mention that it can be played on Windows, Mac, OR Linux.
Steel Storm
Re: Steel Storm
I heard about this, looks like fun!
I'll give it a shot when I get home.
I'll give it a shot when I get home.