Agar.io is a game that is very popular in these days. The goal of the game is to eat cells of other players who are smaller than your cell. The cell has a function that is breaking into pieces to eat other cells. You can divide your cells with a spacebar to 8 pieces because it is limited. Also, there are 4 gaming types that are FFA (Free For All), Teams, Party, and Experimental. The game has a membership system that you can register and then buy some skins or special things with money. The money system is based on coins and levels that you can reach special skins at certain levels. You can start with higher points if you register and log in to the game.