For add-on itself:
A must for all GTA4 player on the XBOX360. The old feeling comes quickly back on, the story is consistent and varied, the new weapons ergännzen the old Arsenal well and the new bikes to ride just fine. Chill to control the bike with Kleibtz feeling better by the hand as with Nico Bellic from the main game, but it can also be just a subjective effect.
New mini-games also there, air hockey makes you feel good, Hi / Lo is quite nice, arm wrestling is not particularly easy to play with the thumbstick ...
Varied bike race round out the cause. Click here next street races sometimes on the beach to the point where you can heat up from the main game on the route of the final mission.
All in all successful food to continue to gamble, I hope more add-ons follow.