Crackdown 2 is the direct sequel to the first Crackdown game released in 2007, rather obviously. Crackdown 2 is a sandbox-style Xbox 360 exclusive which has garnered very mixed reviews so far.
This video review is by 3_Killa_Bytes, who like the game enough to give it 8 out of 10 all round.
It looks as though Crackdown 2 is not intended as a single player experience, so if you have no friends or no Internet connection you may want to give it a miss. However, the co-op and multiplayer modes are awesome, saving the title from being a complete waste of time.
I have to say I’m not impressed on the visuals front. The game looks virtually the same as the original, which is three years old now. And I expected more. Personally, I’d try before you buy, just to make sure it’s your kind of game.