Enjoy original titles like Slither.io and new .io games such as Rocket Bot Royale, Pixel Warfare, Shell Shockers, and Smash Karts. The first .io game was Agar.io. It was developed by Matheus Valadares …

Play free IO games online at Poki. Battle, race, survive, and team up in fast-paced multiplayer arenas, all instantly playable in your browser.

Veck.io is the ultimate FPS io game. Play Veck.io online and join the fight with players around the world.

The "io" extension originally stands for "Indian Ocean," but game developers favor it because it also represents "input/output" - perfectly describing the accessible nature of these games.

New update available! Survive and shoot at others while trying to keep your own tank alive!

Play with millions of players around the world and try to become the longest of the day!

Like games such as Player Unknown's Battlegrounds (PUBG), Fortnite or Apex Legends? Play this free 2d battle royale io game in your browser!