Crazy bikers get ready for the show on top of the skyscrapers this time! You must complete the tracks in Sky City with your bike before the time runs out! If you complete 10 races on time, you can unlock 10 different bike skins. Do not forget to use NITRO power to pass long ramps! Continue with the "2 PLAYER" option to play with your friend. Prove to your friend who is a better bike master! If you collect 30 diamonds in Free Driving mode, you can unlock "Multi-Color Skin". bike racing game, sky city riders, bike skins, 2 player, nitro, unlock skins, free driving mode, motorcycle racing, stunt racing, racing game, skyscraper racing, multiplayer, diamond collection, bike stunts, racing game controls, mobile game