Agar.io is a massively multiplayer online game that immediately turned into a sensation right after its release back in 2015. Players, in this browser-based game, assume the role of a single cell within a huge petri dish. The motto here is to grow larger by consuming smaller cells while avoiding being eaten by larger ones. Because of that simplicity in the premise alone and the depth in strategy, competing against players from all over the world has constituted Agar.io as a web phenomenon that is still holding users' attention.
FFA Mode: You against everyone else, to have the biggest cell.
Teams Mode: You and other players who are active in the game will try to take over the arena; a mini-map will show you the locations of your teammates.
Battle Royale Mode: Be in an arena that shrinks as time goes by, and be the last surviving cell.
Experimental Mode: With different mechanics and features that change the typical gameplay experience, like faster movements or newer cell behavior.
Move your cell using the mouse
Use the Spacebar to split your cell into smaller fragments.
Hit the "W" key to eject a small fraction of your cell's mass.
Q. How do I grow more quickly in Agar.io?
A. You should only be concerned with absorbing the little cells and food pellets, with not being consumed by the bigger cells until you are big enough that you can readily rival them.
Q. What happens when I split my cell?
A. Splitting splits your cell into two or even more mini cells, so you will be able to move faster and make more aggressive plays, but it also makes you more vulnerable to be eaten.