Credits and licences

Code and engines

ComponentLicenceWhere it is used
three.js, © 2010-2026 three.js authorsMITThe 3D games, including Hungry Hole, Blade Spin, Grant Theft Aeroplane 7, Canyon Wing, Emberline, Epoch, Foundry Duel, Sizzle Shot, Veilrunner, Zigzag Roller, Junction Flow, Astra Relay, Cogfall Company and Apex Echo.
postprocessing 6.39.4, © 2015-2026 Raoul van RüschenZlibCogfall Company (bundled in its build).
three-mesh-bvh 0.9.13MITCogfall Company (bundled in its build).
n8ao 1.10.3ISCCogfall Company (bundled in its build).
Godot Engine, © 2014-present Godot Engine contributors, © 2007-2014 Juan Linietsky, Ariel ManzurMITThe Godot web build of Sky Stack.
Starfall by e01.ai (github.com/e01-ai/starfall)MITAstra Relay is a modified version of Starfall.
SpeedRacer by Rahil Bhansali (github.com/rahil-algobear/SpeedRacer)MITApex Echo is a modified version of SpeedRacer.
GameBlocks, © 2026 Weihao ChengMITGame modules (motion, camera, gameplay, maths, interface, world) in Grant Theft Aeroplane 7 and Canyon Wing.
thaikit, © 2026 thaikit contributorsMITStreet-scene props in Grant Theft Aeroplane 7.
Water optics and spectrum code, from natural-disasters (© 2026 Davi, Token-Gremlin) and threejs-awesome-graphics-skills (© 2026 Scott Sun)MITWater rendering in Grant Theft Aeroplane 7.

Art, models, fonts and audio

AssetCreatorLicenceWhere it is used
Car Kit 3.1, City Kit Commercial 2.1, City Kit Suburban 2.0, Nature Kit 2.1 (3D models)Kenney, www.kenney.nlCC0 1.0Hungry Hole, Grant Theft Aeroplane 7
Impact Sounds 1.0, Interface Sounds, Sci-Fi Sounds (audio)Kenney, www.kenney.nlCC0 1.0Blade Spin, Astra Relay
Kenney Future font and Kenney modelsKenney, www.kenney.nlCC0 1.0Neon Rush Overtime
Bark012 and TreeEnd003 texturesambientCG, ambientcg.comCC0 1.0Blade Spin
“Town Theme RPG”cynicmusic, OpenGameArtCC0 1.0Hungry Hole
“Specular City” (excerpt)Vitalezzz, OpenGameArtCC0 1.0Hungry Hole
“Last One Standing”Centurion_of_war, OpenGameArtCC0 1.0Hungry Hole
Interface sound effects, “arcade” pack (uisfx v0.4.0)uisfx.com, github.com/romainsimon/uisfxCC0 1.0Hungry Hole
Music: “Claimed by the Void” (vitalezzz), “Deep Space Array” (Tozan), “Exploration Theme” (CleytonKauffman), “Galactic Temple” and “Spacelife No. 14” (yd), “Stellar Dreams” (Synth-thetic)Via OpenGameArtCC0 1.0Astra Relay

CC0 1.0 Universal (creativecommons.org/publicdomain/zero/1.0) dedicates a work to the public domain and requires no attribution. Kenney asks that people credit “Kenney or www.kenney.nl”, which is not mandatory; we are glad to. Thank you to every creator named here.

Licence texts

The MIT licence requires its notice to accompany copies of the software. The notices are reproduced below.

three.js

Used as listed above.

The MIT License

Copyright © 2010-2026 three.js authors

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.

Godot Engine

Used as listed above.

Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md).
Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.

Starfall

Copyright (c) 2026 e01.ai. Astra Relay is based on the complete Starfall source, modified by Game Foundry AI. Starfall states that it is an independent Homeworld homage that uses none of Homeworld’s art, audio, code or trademarks.

MIT License

Copyright (c) 2026 e01.ai

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

SpeedRacer

Apex Echo is based on SpeedRacer, modified by Game Foundry AI.

MIT License

Copyright (c) 2026 Rahil Bhansali

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

GameBlocks

Used as listed above.

MIT License

Copyright (c) 2026 Weihao Cheng

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

thaikit

Used as listed above.

MIT License

Copyright (c) 2026 thaikit contributors

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

natural-disasters (water)

Used as listed above.

MIT License

Copyright (c) 2026 Davi (Token-Gremlin)

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

threejs-awesome-graphics-skills (water)

Used as listed above.

MIT License

Copyright (c) 2026 Scott Sun

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

Something missing?

If you made something in one of our games and are not credited here, or a licence is described wrongly, tell us at privacy@gamefoundry.ai and we will fix it.