THE 2-MINUTE RULE FOR ONLINE XO GAME WITH FRIENDS

The first .io game was Agar.io. It was developed by Matheus Valadares in 2015 and gained significant popularity through the web Discussion board 4chan. The game revolves all-around cells that mature by feeding on agar and consuming other players. A few months after its launch, the game was acquired by Miniclip, and a new game style started to arise