Agar.io is a massively multiplayer online action game created by Matheus Valadares. Players control a cell in a map representing a petri dish.
The objective of Agar.io is to grow a cell on a petri dish by swallowing both randomly generated pellets (agar), which slightly increases a cell’s mass, and smaller cells, without being swallowed by larger cells.
The browser version currently holds four game modes: FFA (Free-For-All), Teams, Experimental and Party.
The mobile version of the game includes FFA (Free-For-All) and Rush Mode.
The goal of the game is to obtain the largest cell; players must restart when all their cells are eaten.