Smash Karts unblocked is a multiplayer online game. You can play against your friends and other players from around the world. There are many modes to choose from in this game. You can play with your friends in a race to the finish line or in a battle to the death match. There are also many maps to choose from. You can also customize your karts and play with your own personal karts. You can also have your own private server to play with your friends. This game is a great game for all ages.