Credits and licences

OpenSheep is released under the GNU General Public License v3.0. It contains no code, art, sound or data from the original game: everything is read from your own copy at run time.

Sheep is © 2000 Mind's Eye Productions / Empire Interactive. OpenSheep is not affiliated with them.

Published and community sources

• Rob Northen Compression (RNC ProPack, method 2) — the unpacker ports the published algorithm.

Reference implementations

• FFmpeg's libavcodec (LGPL 2.1+) — the Bink 1 video and audio decoder follows its structure and names. It is rewritten, not vendored, and its tables are read from your own binkw32.dll.

Tools

Ghidra, Capstone, AddressSanitizer and UBSan, Pillow, wasi-sdk, VitePress. Packaging, launchers and the release workflow come from OpenRF.

Runtime

gasm (MIT): gasm-run, the C SDK, and on this site @emdzej/gasm-host. OpenSheep is part of ENCORE, with its sibling reimplementations.

If we have missed someone whose work this project relied on, please open an issue — gaps in these credits are bugs.