I preordered this on steam and it installed and I could play SINGLEPLAYER just fine.
I can play multiplayer sort of.
Most double clicks on the server say "serial in use". but sometimes i can play.
and it wont save my cd key at the main menu no matter what ive tried (tried everything on here).
Seems incredibly broken. will there be a fix soon? if not within a few days, I would love to get my money back.

try not using "-" between numbers, that fixed my problem

Try Going to the install directory and running the Crysis2 as an administrator at the menu
where enter you account info.

hey guys please use the PC forum for these discussions.