l4d2

[Spaztech]

http://store.steampowered.com/news/2552/

[Mallissin]

http://www.rockpapershotgun.com/2009/06/01/left-4-dead-2-exclusive-rps-preview/

http://www.gametrailers.com/video/e3-09-left-4-dead/49967

Now if only they'd do VAC bans for altering the game's official texture and sound files to stop the hackers.

[Kavinsky]

They don't need to, it's already such a pain in the ass to mod the guns and characters in l4d that no one does it anymore.