Soldat
I had a game just in Soldat in my head for many years and when I finally discovered that such a game existed, it was hard to hold in my excitement. Soldat is an online deathmatch game that's like a mix of Unreal Tournament, Counter-Strike, and Contra. You would think you would be fairly limited in movement in a 2D game, and you would be right were it not for jetpacks. Shootin' bitches up AND flying?! Does it get any better? Yes! Shootin' bitches while flying around with the enemy flag! There's enough variation in modes to keep you playing Soldat for a while.
The site looks kind of shoddy, but you can rest assured that the game itself is quality!
Once you downloaded soldat, you MIGHT (you really , really should)
want to download the best mod for it, Eradication wars. Make sure you follow the instructions in the Eradication wars zip file EXACTLY.
I'll have a server set up when people play. We'll be playing Eradication wars mod.
http://news.moddb.com/21947/eradication-wars-eradication-wars-60-rel/
and
http://soldat.pl for the main game
