Gravity Driver 2 puts any racer crazy enough to accept the driving challenge inside a tunnel with low gravity and barriers along the way. Not completely away, the gravity isn't what keeps wheels attached to the walls, but their own hyper adherence. Keeping the car on the track isn't difficult, even upside down. The real difficulty is in not crashing onto anything that isn't a bonus during the race, as regardless of the obstacle's size it will be a certain death for the driver. Both Arrow and WASD keys are useful for thrusting and dodging the whole track. Be careful.