Hollytech & Jollymancy is a four page Christmas-themed lighthearted rpg that somehow manages to mash up Assault On Precinct 13 and The Santa Clause.
It's the night before Christmas and the north pole is under attack. As basically an extra from Rudolph The Red-Nosed Reindeer, it's up to you to repel the incursion. You do this with a really well-put-together mini stat block, and some PbtA Moves themed around seasonal cheer.
The game features a Lasers & Feelings style prompt generator (which really cleverly also determines the GM's Moves,) and some loose guidance on what to do, but it's very much in its element as a festive pickup-game one-shot.
It's got solid layout, good writing, and a fun premise, and I would absolutely recommend it to anyone who wants to play a casual Christmas-TV-movie-themed game with friends near the holidays.