Forgot to post this here, but a few days ago I released an advent calendar built to run in Katelabs! Feel free to open the first 4 doors now (or all of them, if you want)

This could be the biggest Katelabs world made to date, it has almost 25 world-sized miniatures in it. Go play it and enjoy: https://www.glorioustrainwrecks.com/node/12178