An installed 1990 MS-DOS game tree measured: 107 files, 866,684 bytes, 55.7890 % of them the byte zero. .ART/.PIX derived as multi-image ZSoft PCX, the 48 fixed-size planes read as room masks, and HUGO.BSF opened with a cipher its author reused two years later.
reverse-engineering adventure-game shareware ms-dos pcx digital-preservation new-executable file-formats
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Updated
Sep 7, 2026 - Python