The source is available here: https://github.com/arikwex/infernal-sigil
NOTE: the current head of the main branch is at 13.6KB due to quality of life patches. The legit 13KB version is tagged in github.
Useful hacks: - Using Roadroller (https://github.com/lifthrasiir/roadroller) for compression - Compressing the map data as grayscale PNG paired with some code generation. - Using procedural animation for all characters. - Replacing string enum with numeric enums for compression. - Built a small game engine for object lifecycle and rendering. - Single function to generate unique procedural songs for different regions.