Kartwars.io free online is an amazing Multiplayer game that has iO extension. This is a 2D car racing game where you will race against numerous online players from all over the world. Instead of controlling a specific character, like blob, or snake in other previous iO games, now, you will take control of your car and move it around the map to get rid of the opponents. Collect power-ups while roaming around, and use them wisely to kill the foes faster. You can launch missiles to blow up many cars as well. Play it now and check out Kartwars.io Mods to experience more features!