Upload a single HTML file and it goes live on this site, playable by anyone.
Checking your account…
You need an account to publish a game.
Keep it one file. Put your HTML, CSS and JavaScript all in the same file — then it just works. Up to 1.5 MB.
It runs sandboxed. Your game gets its own isolated space, so it can't touch anyone's account or the rest of the site.
The flip side: localStorage and network requests are blocked inside it, so keep scores in memory instead.