139 games · 113 playable

.io games

Agar.io set the template in 2015: open a URL, type a name, and you are in a huge arena with everyone else who is playing right now. Grow, survive, climb the leaderboard, start again. The games that followed kept the .io domain as a badge of the genre.

These are the .io games in our catalogue. They load quickly, run in any modern browser — Chromebooks included — and most never ask for an account. Some servers have quietened down over the years, so a few of the older ones may be sparse.

FAQ

Questions and answers

What are .io games?
Browser multiplayer games, usually on a .io domain, that drop you into a shared arena with no sign-up. Agar.io, Slither.io and Diep.io are the best known.
Do .io games need a download?
No. They run in the browser tab. A few also have mobile apps, but the web version is the original.
Why is an .io game empty or not loading?
Smaller .io games depend on live servers and other players. If one will not connect, the servers may be down for good — use “Not working?” on its page so we can check it.

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