Agar.io is an awesome multiplayer online action game. Players control a round colored cell in a map that looks like a square lined paper. The action takes place in a real time and there're only real people behind every cell. The objective of Agario is to grow a cell by swallowing both randomly generated small colored dots, which slightly increase a cell's mass and smaller cells, without being swallowed by larger ones. You lose if all of your cell's mass is being swallowed by another player. The more mass your cell have, the slower it will get. Large cells also continuously lose their mass.