Cube Racer 2

Cube Racer 2 is a racing game with cubes. However, you experience pure chaos from the starting line to the finish line. You dodge as much deadly spikes as possible, while using that sneaky portal to skip the hardest part and leave your friends behind in all that mess. While you're at it, you honk at them to assert dominance.

After you won the first round, you build as much obstacles as you can.