Alien Swarm

[LA_MERC_Onji]

Just an FYI. Valve just released a new game on steam called: Alien Swarm

and its FREE

It has singleplayer and 4 player co-op with achievements and everything.
looks fun:

http://store.steampowered.com/app/630/

[LA_MERC_YellowDog]

HUmm cool :-)