:desert_island: Had way too much fun with this one...

# random

[Jackson Mafra]

🏝️ Had way too much fun with this one: I rebuilt the classic Johnny Castaway screensaver (Sierra/Dynamix, 1992) as a native macOS .saver — in Kotlin/Native.
I used @zsmb Kotlin macOS screensaver template as the base, then wrote the whole engine from scratch: parsing the original DGDS data files, LZW/RLE decompression, the TTM/ADS animation interpreters, and a little "story director" that brings Johnny's island to life , he walks around, fishes, there's a day/night cycle and even holiday decorations.

No assets bundled; it reads your own original game files at runtime, ScummVM-style.
The reverse-engineering rabbit hole was easily the best part.

Demo 👇
https://github.com/jacksonfdam/johnny-castaway-compose

Screen Recording 2026-06-15 at 20.19.32.mp4