Boom-Kart-3d-Game Boom Kart 3D is a kart racing 3D game. If you like racing games, then this is a good choice for you. Choose your favorite character to start the game and there are three modes for you to choose from, multiplayer race, prop race, and single-player race. Don't forget to use your racing skills and boost your speed. You can also speed up by using coins. Call your friends, join together and compete to see who's better!