Slither.io

You must grow your snake by consuming multi-colored orbs in a giant multiplayer arena. Avoid other snakes to avoid becoming snake food, or take other players down by forcing them to crash into your side. If your head touches another player, you will explode and then it's game over. But if others run into you, then they will explode, and you can eat their remains! When a worm is defeated, the rest of the worms get to eat it to become bigger. That's why a good strategy is to follow other bigger worms while waiting for someone else to defeat them. That way you can eat them and size up. Yup, just like a vulture!