CONTRAST by Oxygene (1996), reversed and ported to JavaScript

Play it: the GitHub Pages site of this repository (needs sound; F = fullscreen, P = pause).

• oxg_cont/ the 1996 release (EXE, data archive, module).
• oxg_out/REVERSE.md how the release is built, the emulator harness, annotated assembly.
• oxg_out/EFFECTS.md the effects, the 3D engine, the tricks, the 3D scenes.
• oxg_web/ the pixel-exact JavaScript port (src/), its tests and the web page (site/).
• oxg_tools/ the emulator harness and the recording / extraction tools.

The port was verified tick by tick against the real program run in an emulator (39,243 ticks). The recording itself (~800 MB) is not in the repository; oxg_tools/record.py and export_rec2.py regenerate it.