If you download the game to play , you'll notice the in-game server browser no longer works. To play online, the community uses the CryMP (Crysis Multiplayer) client.
While you can’t download (which includes the multiplayer suite Crysis Wars ) for free legally, the game is widely available on major digital storefronts for PC. Download Crysis Warhead (Crysis Wars) PC Game 2008
If the game crashes on launch, try running the Bin64 executable instead of the standard shortcut. If you download the game to play ,