Agar.io is a multiplayer online action game. This .io game was developed by Matheus Valadares. As a player, you can control one or more cells in a game map. In Agar.io, your mission is to gain as much mass as you can by absorbing agar and cells smaller than your cell. While you are doing that, you should avoid larger cells because thee cells can eat your cell.
At the beginning of the game, you will have one cell. However, you will be able to split this cell into two when it becomes a sufficient mass.
How To Play Agar.io
The game controls are the space bar, the W keys and your mouse in Agar.io. You can control the movements of your cell by moving your mouse. You should keep in mind that the movement speed of your cell will decrease when its size becomes larger. Besides that, you can split your cell into two by using the space bar whereas you can throw a small part of your cell by pressing the W key.