Hey everyone,
Been playing through the crysis 2 campaign on my steam version of the game. Yesterday I wanted to try out multiplayer so I typed in my serial key *it validated(, then I tried to join games and it states my Serial Key is currently in use. Has someone with a hacked version of the game stolen my CD Key inadvertently with a key generator? If so... What can I do to fix the situation?

Thanks! Help from some cryteam members would be great.

http://www.gamesas.com/forums/viewtopic.php?f=40&t=11741