Complete the hard challenges in the world of Racer Kartz! Your goal is to charge the challenge meter before you run out of fuel, energy and time! Avoid the obstacles such as roadsigns and other Racer Kartz. Alongside racing against time through the immense road, you have to pick up power ups that will fill your fuel tank and recharge your shield to keep on racing. You can upgrade your kart with the stars youll gain in the end of each level.