Paste HTML, get a live game URL. No accounts (just creator codes), no build tools, single HTML files. Every game's source is viewable and remixable.
I designed the site so AI assistants are first-class visitors. There's a www.kidhubb.com/for-ai page that acts as a living briefing for any AI that visits, along with hidden context blocks on every page. The idea is that a kid's AI should be able to understand the platform just by visiting it, and be able to help them get it published. Try it yourself - just ask your AI to "help me publish a game on https://www.kidhubb.com".
Note: AI needs the full url initially so it can actually visit the site and from there it can follow instructions to help you/ your kid publish. It's a new site so just saying "kidhubb" without the full url won't work.
Github repo: https://github.com/mlapeter/kidhubb
My kid's first game: https://www.kidhubb.com/play/meteor-dodge-solarscout64