Here is just a simple version of Agar.io that someone else has made... To start, enter a name for your cell, (you don't have to use anything in particular) and you will have 100 seconds to collect as much mass as possible. Then move your mouse in the direction you want your cell to move, and try to eat up the little dots. The bigger you get, the slower you move! :) There is a mini-map so you can see where you are in the map. You CAN'T SPLIT OR EJECT MASS yet, just eat stuff. :P I have added viruses, of which you can hide behind when you are smaller than them, and just go over them when you're bigger. They appear once in a while on the screen. No splitting yet! :P I might add AIs soon... So collect as much mass as you can in 100 seconds, then it will show you your score and list of the top 10 scores. See if you can get on the leaderboard or break the record!
IT IS HACKED!