Zapper.io is a cool massively multiplayer online Slither style game. Control a small worm or snake and compete against a lot of enemies from around the real world. The mission that you are required to accomplish is to become the longest animal. After appearing on the map of Zapper.io free, you are able to roam around and collect food orbs. Always avoid dangerous encounters if you are not ready! Otherwise, you can be killed in a wink. Just focus on evading and gathering when you are still vulnerable. The mass will be increased each time you consume. It means that you will grow longer and bigger after that. Once you feel more convenient, you can start to play down other challenges in Zapper.io unblocked. To eliminate a target found on the path, you can speed up to chase, block his head and cut him off later. However, you can test more tips and tricks from the original to achieve the goal easily. Good luck!