Seems to be working fine, no modes.
Not too impressed though, not as much fun as GTA. Maybe it gets better further into the game...
EDIT: Um....I don't wanna sound like I jumped the gun but....it's quite good actually
The map is huge, missions are fun, the parachute is inspired and being able to hop out of the car onto the roof while driving to jump onto another car is great fun. A couple of little issues (if you are on a bike and you hit a car sometimes the car will fly off down the road and you don't fall off the bike ) but on the whole not a bad game.