Blockor.io

Blockor.io is a 2D multiplayer game that is similar to agario and tetris. This game combines the best features of both games. You start out with one block, but as you eat more, you become bigger, better and faster. The way to kill your enemy is to get big enough so that you can bump into them which will be their demise. On the other hand, if they are bigger than you, than you will have major problems as you ll be the one losing your life.