Vince “deater” Weaver, known for his demakes of Myst, Portal, and Out of This World, just today published his seasonal Christmas demo.
This demo was recorded on an actual Apple IIe Platinum with a Mockingboard sound card. A 140K disk image is available on deater’s website; the 6502 assembly source code can be found in GitHub; and the demo can be booted in an online emulator at the Internet Archive.
deater has been developing annual holidays demos every year since 1990; you can find the complete collection on his website. For a roundup of various holiday demos from many years, artists, and retrocomputing platforms, check out Blake Patterson’s Byte Cellar.
(Hat tip to Kay Savetz via Mastodon)