Polygon Racer 3D is a racing game in which the player must race against the clock in a rally across the USA. There are 12 races in total, each corresponding to a state of the United States, going from California to the Maine. In each races, the player must reach the end within the time limit. At each quarter of the race, a time bonus will be awarded. Traffic, obstacles on the road and the type of road itself slow the player down and forces him to adapt his driving. Upgrades can be bought, namely tires, engines and gearboxes to improve the performances of the player's vehicle.