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Ok, I think someone has already heard about this game in general discussion for me blabbering it out.
Heres the game again:
http://vegastrike.sourceforge.net
Basically, if you heard if Jumpgate or Vendetta, exactly what this game may be about.
Right now, the game is currently a singleplayer game. It's also opensource and yes they are very aware of cheating in multi. Once multiplayer gets incorperated, it will start out as quake in space at first and then it will turn into an open ended type in the later stages.
You people should take a look at the graphics.
And yes, this game is availible for all OSes. Windows, Linux, and Macintosh.
Feel free to drop in and say hi.