I can play this for hours especially in the freestyle mode. Controls are some of the best, I've experienced in a game. You can not simply hammer the throttle and accomplish tricks or win races. It takes throttle, brake, and steering control. The different modes of racing and variety of ATVs keeps the game interesting.
Graphics are very good, but again the biggest plus is the driving simulation.
The sense of speed and control is excellent. On the downside is the racig itself in the Pro-career mode. I found that when you wipe-out it takes your rider much longer to remount than the other riders. Races seem to be a fairly random affair unless you are flawless in your driving. I know in reality you can go from 1st to 5th in a blink of an eye, but it seems to happen much too often in this game.