That’s a tough one to choose. After all, many of our most popular games on the Coolmath Games site are IO games. A few of our personal favorites are powerline.io and defly.io. Both are high-action games with giant maps and super fun gameplay. We especially recommend powerline.io if you are good at the game Snake. It’s basically a multiplayer version of Snake, except you are trying to eat other players instead of apples.
Our newest IO game, Hexanaut.io, is also extremely popular on our site. In this game, players are playing as a snake that is circling around hexagonal tiles in order to capture them. Watch out for other players though! They may just end up cutting your tail off and taking your land, so be careful.