How do you publish a Twine story?

You publish a Twine story by exporting it to a single HTML file, then hosting that file wherever you like. In Twine, open your story and choose 'Publish to File' (or the archive option in the desktop app), which produces one self-contained .html file containing the whole game. From there you have options: upload it to itch.io, which is the most popular home for Twine games, put it on your own web host or a service like Neocities, or simply share the file directly since it runs by double-clicking in any browser. itch.io is the common choice because it handles hosting, a game page, and even optional payments. No server or special software is needed, because the exported HTML is the finished, playable game. You can see how finished browser games play on the play page.