Zapper.io is an interesting free MMO Slither style io game. In which, you will play online against a lot of opponents as a worm. You’d better become the biggest creature if you want to take over the top spot. Engage in the battle of Zapper.io unblocked you should eat as much as possible to grow bigger. Don’t get close to other animals in case you are not ready. As in the original, they can block and cut off you at any time. Be careful and survive!
Instructions: Use the mouse cursor to navigate the worm in Zapper.io