I just got Crysis today and played 2 hours of singleplayer. I love the game, but when I go to join a server, it says that MY game differs from the version I have. I just installed the latest patch, why wont it let me play? I installed 1.21.
You could also check in to some mods:
I myself did not go into many of them, and lot of them are just projects that are still under progress.
Myself; i see the mechwarrior mod very intriguing, if something that cries out that it is different AND multiplayer - and based on something that already says it is successful - THAT would be it (also, its not a game with mod community to it without some zombie and horror orientations)