Comment depends on the meaning of "for real" (Score 5, Informative) 443
Skidrow put their own copy protection on the crack because they simply placed the values from the emulator into a dll. It's nice and convenient to have a dll return the values instead of a server however if they had actually cracked then they would have also cracked the other games for which the emulator doesn't currently exist.
So yes, Assassin's Creed 2 is playable but their copy protection is only broken in the sense that AC2 designers decided to make the server-client for this game return static responses that can be collected and eventually make the game playable for pirates.