Nothing leaks early
Puzzles are sealed before they are committed. A day only opens with the release key, which lives in CI, so nothing is published before its date.
advent
Write puzzles, seal them, and publish one door a day. Each solve gives a word; all the words open a certificate.
One binary, a static site
advent seals, verifies and builds a static site any host can serve. No server, no database; progress stays in the player’s browser.
Your brand, every year
Name, logo, light and dark palettes, a yearly theme, and days spread however you like.
Authors together
An editors key lets authors reopen and edit any day; one who wants to stay surprised can seal their own days without it.