Agario Game since 2015
Released in 2015, agario is a fun game. In this game, you control a blob and try to make grow it by eating smaller ones. Note that you can only eat those smaller than you. Meanwhile, beware of bigger blobs as you can be eaten! You may need to give them some part of your blob not to be eaten completely. Hit space to divide your blob into two pieces and hit 2 to eject mass into a virus. Agar io is one of the greatest agario unblocked io games. Try it and you will have fun so much!