Gulper.io is a great multiplayer snake game that takes inspiration from Slither.io. You have to take charge of a little glowworm and try to evolve a bigger one so you can pulverize different worms on the battlefield.
You can grow bigger by ingesting the glowing plasters spread around the guide. You have to move fast and watch out for the enemies that come closer as they will try to take you out. Cut your opponents by grabbing them and making them crawl inside your own body. Would you be able to transform into the biggest glow worm?