Play Smash Karts - a 3D multiplayer arcade game. Drive your kart, collect weapons and use them to blast other karts. You can choose from different wacky characters and customize your kart in different colors. Each game lasts three minutes. There are various weapons to collect such as grenades, rockets, missiles, machine guns, bullets. Buckle up and join the arena. How to play Smash Karts Use the arrows or WASD to drive. Click the space bar to fire the weapon.