Radikal Bikers is set in a Mediterranean environment, and is based on delivering pizza on a rare Italian scooter called Italjet Dragster in heavy traffic before your AI opponent does, while getting points. The arcade version has three difficulty levels, which correspond to each of the different places: Margherita (easy, set in Milan), Capricciosa (medium, set in Rome), and Diabola (hard, set in Naples). If you beat all four races in a level, you get to play the next level free. Meanwhile, the PlayStation version includes four more locations on top of the original three as part of the extended Radikal mode: Marinara (set in Venice), Fantasia (set in Paris), Reggiana (set in London) and Americana (set in New York)