Advent Window is copyright 2024 by Andrew Plotkin (erkyrath@eblong.com). It may be distributed for free, but not sold or included in any for-profit collection without written permission from the author.
Advent Window is the conclusion of the trilogy started in Advent Door and Advent Mirror.
This game was written for the Confounding Calendar 2024, a collaborative Advent Calendar puzzle collection. Most of the games in this project are grid-based puzzles (typically PuzzleScript), but I entered a parser game in 2022 and then again in 2024.
The only provided theme was a shared color palette. If you play Advent Window on this web site, you'll see that I used the palette for displaying the game text. If you play in another interpreter, you won't get the colors. (Don't worry, they're purely decorative.)