Far Cry 2 Security...

Far Cry 2 will be released using the same DRM Securom technology that was used for the first time in Spore. Far Cry, however, will utilize this technology differently and will have registration features similar to that of bioshock. You can install the game up to 5 times on 3 computers. When you uninstall the game, you get the credit back and may reinstall again.

While this is not quite as harsh of a system as Spore uses, it is still pretty strict. Spore only allows one player to ever play Spore properly.