# Credits and licences

This static build combines the real OpenTTD engine with community-made base graphics and sounds. It contains no data from the original Transport Tycoon Deluxe release.

## OpenTTD 15.3

OpenTTD is an open-source transport simulation maintained by the OpenTTD team and its contributors. This build uses commit `14ec60f248547d4d062a1160f0fc26d742319888`, the commit tagged `15.3`.

- Project: <https://www.openttd.org/>
- Source: <https://github.com/OpenTTD/OpenTTD/tree/14ec60f248547d4d062a1160f0fc26d742319888>
- Licence: GNU General Public License version 2
- Local licence: [licenses/OPENTTD-GPL-2.0.md](licenses/OPENTTD-GPL-2.0.md)
- Full upstream acknowledgements: [licenses/OPENTTD-CREDITS.md](licenses/OPENTTD-CREDITS.md)

## OpenGFX 8.0

OpenGFX supplies the terrain, vehicles, buildings, industries, stations, effects, cursors, icons, and interface sprites. It is the work of the OpenGFX team and many individual artists listed in its bundled readme. This build uses release commit `e68bd9b7cb60305aa98c687b6836e0e0b08e2847`.

- Source: <https://github.com/OpenTTD/OpenGFX/tree/e68bd9b7cb60305aa98c687b6836e0e0b08e2847>
- Licence: GNU General Public License version 2
- Local licence: [licenses/OPENGFX-GPL-2.0.txt](licenses/OPENGFX-GPL-2.0.txt)
- Project credits: [licenses/OPENGFX-README.txt](licenses/OPENGFX-README.txt)
- Sprite-by-sprite artist ledger: [licenses/OPENGFX-AUTHORS.csv](licenses/OPENGFX-AUTHORS.csv)

## OpenSFX 1.0.3

OpenSFX supplies the game’s sound effects. Its sounds were assembled and edited from freely licensed contributions; the complete sample-by-sample attribution ledger is preserved locally. This build uses release commit `4332d7f216eece2e6417f284b00afb832126433d`.

- Source: <https://github.com/OpenTTD/OpenSFX/tree/4332d7f216eece2e6417f284b00afb832126433d>
- Sound licence: Creative Commons Attribution-ShareAlike 3.0 Unported
- Non-audio files: GPL version 2 or later, or CDDL 1.1
- Full licence texts: [licenses/OPENSFX-LICENSE.txt](licenses/OPENSFX-LICENSE.txt)
- Full sound attributions: [licenses/OPENSFX-README.txt](licenses/OPENSFX-README.txt)

## Browser toolchain

The WebAssembly build uses Emscripten 3.1.57 and SDL 2 through OpenTTD’s maintained `os/emscripten` target. Emscripten is available under the MIT and University of Illinois/NCSA licences. SDL 2 is zlib-licensed. Their corresponding notices remain part of the upstream OpenTTD and Emscripten source trees.

Exact inputs, checksums, local modifications, and reproducible build commands are in [SOURCE.md](SOURCE.md).