File-format and engine documentation for H.U.R.L. / Slob Zone 3D (Deep River Publishing, 1995, MS-DOS) on Lary Myers' ACK-3D raycaster: the .DTF chunk containers, level scripts shipped as commented ASCII with the artists' file names intact, GIF87a tiles, the DIGPAK/MIDPAK audio stack. Documentation only, no game assets.
reverse-engineering retrogaming raycasting file-formats dos4gw hurl xmidi dos-games game-preservation digpak ack-3d midpak slob-zone deep-river-publishing lary-myers
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Updated
Aug 27, 2026 - Python