SellGameSourceCode

What a game's source tree lets a seller pass on

7 of 19 engine, middleware and asset store licences we read let their code or content leave a studio only compiled into the shipped game, read 28 October 2026.

7 of 19 licences Licences that let their code leave a studio only inside the built game share of the licences we read in their own licence documents, 28 Oct 2026
15 of 19 Using it to train AI: not stated top answer out of 3
16 of 19 What the developer owns: not stated top answer out of 2
19 of 19 The licence, in its words: stated how many licences say so in their licence documents, quoted below
20 Licence documents checked 24 named; each answer carries its date and a hash

Passing its code or content on with the source

  1. only compiled into the shipped game7 licences
  2. allowed, with its open licence attached6 licences
  3. not allowed without the vendor's permission4 licences
  4. only to someone holding the vendor's own licence2 licences
Counts over 19 licences, a single answer each, with "varies" where a licence's licence documents do not agree.
Counts
RowValue
only compiled into the shipped game7 licences
allowed, with its open licence attached6 licences
not allowed without the vendor's permission4 licences
only to someone holding the vendor's own licence2 licences

Using it to train AI

  1. not stated15 licences
  2. barred3 licences
  3. needs the vendor's or provider's consent1 licence
One answer for each of the 19 licences.
Counts
RowValue
not stated15 licences
barred3 licences
needs the vendor's or provider's consent1 licence

What the developer owns

  1. not stated16 licences
  2. the developer's own work, not the vendor's3 licences
One answer for each of the 19 licences.
Counts
RowValue
not stated16 licences
the developer's own work, not the vendor's3 licences

The licence, in its words

  1. stated19 licences
One answer for each of the 19 licences.
Counts
RowValue
stated19 licences

All the answers, licence by licence

Read across a row for one licence's answers, and open any of them for the quoted sentence, its licence document and the read date. A "not stated" cell means the licence document does not speak to that question.

LicencePassing its code or content on with the sourceUsing it to train AIWhat the developer ownsThe licence, in its words
Bevy
allowed, with its open licence attached

Permission is hereby granted, free of charge, to any person obtaining a copy Bevy MIT licence

not stated

Not addressed in Bevy MIT licence

not stated

Not addressed in Bevy MIT licence

Permission is hereby granted, free of charge, to any person obtaining a copy

Permission is hereby granted, free of charge, to any person obtaining a copy Bevy MIT licence

Crytek, CRYENGINE
not allowed without the vendor's permission

You may not sub-license, transfer, charge others to use or access CRYTEK Software or commercially exploit the Crytek Software in any other way. CRYENGINE Terms of Service

not stated

Not addressed in CRYENGINE Terms of Service

not stated

Not addressed in CRYENGINE Terms of Service

You may not sub-license, transfer, charge others to use or access CRYTEK Software or…

You may not sub-license, transfer, charge others to use or access CRYTEK Software or commercially exploit the Crytek Software in any other way. CRYENGINE Terms of Service

Defold
allowed, with its open licence attached

You are free to distribute original or modified (derivative) versions of Defold. The Defold License

not stated

Not addressed in The Defold License

not stated

Not addressed in The Defold License

Put the license in a text file and include it with the distribution of your application.

Put the license in a text file and include it with the distribution of your application. The Defold License

Epic Games, Unreal Engine
only to someone holding the vendor's own licence

You may Distribute Engine Code (including as modified by you) in Source Code or object code to a third party who is separately licensed by us to use the same version of the Engine Code that you are Distributing. Unreal Engine EULA

barred

result in using the Licensed Technology as a training input to any Generative AI Program or as prompt-based input where the Generative AI Program trains on input data. Unreal Engine EULA

the developer's own work, not the vendor's

As between you and us, you own all rights, other than rights in the Licensed Technology, in the Products you develop under this Agreement Unreal Engine EULA

result in a sale or grant of a security interest in any Licensed Technology;

result in a sale or grant of a security interest in any Licensed Technology; Unreal Engine EULA

Epic Games, Unreal Engine content
only compiled into the shipped game

You may Distribute Licensed Content incorporated in object code format only as an inseparable part of a Project to end users. Unreal Engine content EULA

barred

You shall not collect, aggregate, mine, scrape, or otherwise use NoAI Content (i) in datasets utilized by Generative AI Programs; Unreal Engine content EULA

the developer's own work, not the vendor's

As between you and us, you own all rights, other than rights in the Licensed Content or as stated in the Service-Specific Terms Unreal Engine content EULA

you may not Distribute Licensed Content in source format to third parties except to…

you may not Distribute Licensed Content in source format to third parties except to employees, affiliates, and contractors who are utilizing the Licensed Content in good faith to develop a Proj Unreal Engine content EULA

Esoteric Software, Spine Editor
not allowed without the vendor's permission

a limited, revocable, non-exclusive, non-sublicensable, and non-transferable license Spine Editor License

not stated

Not addressed in Spine Editor License

not stated

Not addressed in Spine Editor License

a limited, revocable, non-exclusive, non-sublicensable, and non-transferable license

a limited, revocable, non-exclusive, non-sublicensable, and non-transferable license Spine Editor License

Esoteric Software, Spine Runtimes
only to someone holding the vendor's own licence

provided that each user of the Products must obtain their own Spine Editor license Spine Runtimes License

not stated

Not addressed in Spine Runtimes License

not stated

Not addressed in Spine Runtimes License

provided that each user of the Products must obtain their own Spine Editor license

provided that each user of the Products must obtain their own Spine Editor license Spine Runtimes License

Fab
only compiled into the shipped game

you may, however, only authorize end users to make use of Content solely as incorporated in the Project in object code Fab EULA

barred

Under a Standard License, you may not use NoAI Content (a) in datasets utilized by Generative AI Programs Fab EULA

the developer's own work, not the vendor's

you own all rights, other than rights in the Content, in anything you make with the Content under this agreement Fab EULA

Under a Standard License, you may not Distribute Content on a standalone basis to third…

Under a Standard License, you may not Distribute Content on a standalone basis to third parties except to your collaborators Fab EULA

Firelight Technologies, FMOD
only compiled into the shipped game

A license gives the holder permission to distribute the FMOD Engine in a game. FMOD licensing page

FMOD SDK files are not to be distributed with the exception of the FMOD Engine run-time libraries FMOD EULA

not stated

Not addressed in FMOD licensing page

Not addressed in FMOD EULA

not stated

Not addressed in FMOD licensing page

Not addressed in FMOD EULA

A license gives the holder permission to distribute the FMOD Engine in a game.

A license gives the holder permission to distribute the FMOD Engine in a game. FMOD licensing page

FMOD SDK files are not to be distributed with the exception of the FMOD Engine run-time libraries FMOD EULA

Havok
not allowed without the vendor's permission

Any reproduction or redistribution of the Products not in accordance with the applicable License Agreement is expressly prohibited by law Havok terms of use

not stated

Not addressed in Havok terms of use

not stated

Not addressed in Havok terms of use

Any reproduction or redistribution of the Products not in accordance with the applicable…

Any reproduction or redistribution of the Products not in accordance with the applicable License Agreement is expressly prohibited by law Havok terms of use

inkle, ink
allowed, with its open licence attached

to use, copy, modify, merge, publish, distribute, sublicense, and/or sell ink MIT licence

not stated

Not addressed in ink MIT licence

not stated

Not addressed in ink MIT licence

to use, copy, modify, merge, publish, distribute, sublicense, and/or sell

to use, copy, modify, merge, publish, distribute, sublicense, and/or sell ink MIT licence

Mirror
allowed, with its open licence attached

Permission is hereby granted, free of charge, to any person obtaining a copy Mirror MIT licence

not stated

Not addressed in Mirror MIT licence

not stated

Not addressed in Mirror MIT licence

Permission is hereby granted, free of charge, to any person obtaining a copy

Permission is hereby granted, free of charge, to any person obtaining a copy Mirror MIT licence

OGRE
allowed, with its open licence attached

The only condition is that you distribute the license text included in our distribution with any software that uses OGRE. OGRE licensing page

not stated

Not addressed in OGRE licensing page

not stated

Not addressed in OGRE licensing page

The only condition is that you distribute the license text included in our distribution…

The only condition is that you distribute the license text included in our distribution with any software that uses OGRE. OGRE licensing page

Open 3D Engine
allowed, with its open licence attached

The default license for Open 3D Engine is the Apache License, Version 2.0 O3DE licence file

not stated

Not addressed in O3DE licence file

not stated

Not addressed in O3DE licence file

you may elect at your option to use the Open 3D Engine under the MIT License

you may elect at your option to use the Open 3D Engine under the MIT License O3DE licence file

RPG Maker
not allowed without the vendor's permission

or enabling of transmission of This Software in whole or in part without the prior written consent of the Company RPG Maker EULA

not stated

Not addressed in RPG Maker EULA

not stated

Not addressed in RPG Maker EULA

Extraction of Company Programs or Company Assets from User Games and Distribution, etc.

Extraction of Company Programs or Company Assets from User Games and Distribution, etc. RPG Maker EULA

Unity Asset Store
only compiled into the shipped game

to reproduce, publicly display, publicly perform, transmit, and distribute the Asset as incorporated and embedded in that Licensed Product; Asset Store Terms of Service and EULA

needs the vendor's or provider's consent

(g) use the Unity Asset Store or Assets for purposes such as training an artificial intelligence or machine learning model without the express consent from the Provider and/or Unity. Asset Store Terms of Service and EULA

not stated

Not addressed in Asset Store Terms of Service and EULA

(g) use the Unity Asset Store or Assets for purposes such as training an artificial…

(g) use the Unity Asset Store or Assets for purposes such as training an artificial intelligence or machine learning model without the express consent from the Provider and/or Unity. Asset Store Terms of Service and EULA

Unity, Editor
only compiled into the shipped game

you may distribute the Unity Runtime as an integrated part of your Projects, solely as embedded or incorporated into your Projects Unity Editor Software Terms

not stated

Not addressed in Unity Editor Software Terms

not stated

Not addressed in Unity Editor Software Terms

you may distribute the Unity Runtime as an integrated part of your Projects, solely as…

you may distribute the Unity Runtime as an integrated part of your Projects, solely as embedded or incorporated into your Projects, and solely to third parties to whom you license or sell your Projects Unity Editor Software Terms

Unity, packages
only compiled into the shipped game

Exercise of the distribution license granted under this License is limited to distribution of the Work as binaries integrated with your Project Content Unity Package Distribution License

not stated

Not addressed in Unity Package Distribution License

not stated

Not addressed in Unity Package Distribution License

Exercise of the distribution license granted under this License is limited to…

Exercise of the distribution license granted under this License is limited to distribution of the Work as binaries integrated with your Project Content Unity Package Distribution License

Valve, Steamworks SDK
only compiled into the shipped game

reproduce and distribute the part of the SDK provided inside the folder named redistributable_bin Steamworks SDK Access Agreement

not stated

Not addressed in Steamworks SDK Access Agreement

not stated

Not addressed in Steamworks SDK Access Agreement

use and locally reproduce the SDK in source code form, solely to develop the Licensee…

use and locally reproduce the SDK in source code form, solely to develop the Licensee Software Steamworks SDK Access Agreement

The 80 sentences the answers come from
  • Bevy, Bevy MIT licence, read 2026-10-28, Passing its code or content on with the source: Permission is hereby granted, free of charge, to any person obtaining a copy
  • Bevy, Bevy MIT licence, read 2026-10-28, Using it to train AI: The licence document is silent here; it was read in full on 2026-10-28, 1,887 characters long.
  • Bevy, Bevy MIT licence, read 2026-10-28, What the developer owns: The licence document is silent here; it was read in full on 2026-10-28, 1,887 characters long.
  • Bevy, Bevy MIT licence, read 2026-10-28, The licence, in its words: Permission is hereby granted, free of charge, to any person obtaining a copy
  • Crytek, CRYENGINE, CRYENGINE Terms of Service, read 2026-10-28, Passing its code or content on with the source: You may not sub-license, transfer, charge others to use or access CRYTEK Software or commercially exploit the Crytek Software in any other way.
  • Crytek, CRYENGINE, CRYENGINE Terms of Service, read 2026-10-28, Using it to train AI: The licence document is silent here; it was read in full on 2026-10-28, 43,746 characters long.
  • Crytek, CRYENGINE, CRYENGINE Terms of Service, read 2026-10-28, What the developer owns: The licence document is silent here; it was read in full on 2026-10-28, 43,746 characters long.
  • Crytek, CRYENGINE, CRYENGINE Terms of Service, read 2026-10-28, The licence, in its words: You may not sub-license, transfer, charge others to use or access CRYTEK Software or commercially exploit the Crytek Software in any other way.
  • Defold, The Defold License, read 2026-10-28, Passing its code or content on with the source: You are free to distribute original or modified (derivative) versions of Defold.
  • Defold, The Defold License, read 2026-10-28, Using it to train AI: The licence document is silent here; it was read in full on 2026-10-28, 14,664 characters long.
  • Defold, The Defold License, read 2026-10-28, What the developer owns: The licence document is silent here; it was read in full on 2026-10-28, 14,664 characters long.
  • Defold, The Defold License, read 2026-10-28, The licence, in its words: Put the license in a text file and include it with the distribution of your application.
  • Epic Games, Unreal Engine, Unreal Engine EULA, read 2026-10-08, Passing its code or content on with the source: You may Distribute Engine Code (including as modified by you) in Source Code or object code to a third party who is separately licensed by us to use the same version of the Engine Code that you are Distributing.
  • Epic Games, Unreal Engine, Unreal Engine EULA, read 2026-10-08, Using it to train AI: result in using the Licensed Technology as a training input to any Generative AI Program or as prompt-based input where the Generative AI Program trains on input data.
  • Epic Games, Unreal Engine, Unreal Engine EULA, read 2026-10-08, What the developer owns: As between you and us, you own all rights, other than rights in the Licensed Technology, in the Products you develop under this Agreement
  • Epic Games, Unreal Engine, Unreal Engine EULA, read 2026-10-08, The licence, in its words: result in a sale or grant of a security interest in any Licensed Technology;
  • Epic Games, Unreal Engine content, Unreal Engine content EULA, read 2026-10-28, Passing its code or content on with the source: You may Distribute Licensed Content incorporated in object code format only as an inseparable part of a Project to end users.
  • Epic Games, Unreal Engine content, Unreal Engine content EULA, read 2026-10-28, Using it to train AI: You shall not collect, aggregate, mine, scrape, or otherwise use NoAI Content (i) in datasets utilized by Generative AI Programs;
  • Epic Games, Unreal Engine content, Unreal Engine content EULA, read 2026-10-28, What the developer owns: As between you and us, you own all rights, other than rights in the Licensed Content or as stated in the Service-Specific Terms
  • Epic Games, Unreal Engine content, Unreal Engine content EULA, read 2026-10-28, The licence, in its words: you may not Distribute Licensed Content in source format to third parties except to employees, affiliates, and contractors who are utilizing the Licensed Content in good faith to develop a Proj
  • Esoteric Software, Spine Editor, Spine Editor License, read 2026-10-28, Passing its code or content on with the source: a limited, revocable, non-exclusive, non-sublicensable, and non-transferable license
  • Esoteric Software, Spine Editor, Spine Editor License, read 2026-10-28, Using it to train AI: The licence document is silent here; it was read in full on 2026-10-28, 27,309 characters long.
  • Esoteric Software, Spine Editor, Spine Editor License, read 2026-10-28, What the developer owns: The licence document is silent here; it was read in full on 2026-10-28, 27,309 characters long.
  • Esoteric Software, Spine Editor, Spine Editor License, read 2026-10-28, The licence, in its words: a limited, revocable, non-exclusive, non-sublicensable, and non-transferable license
  • Esoteric Software, Spine Runtimes, Spine Runtimes License, read 2026-10-28, Passing its code or content on with the source: provided that each user of the Products must obtain their own Spine Editor license
  • Esoteric Software, Spine Runtimes, Spine Runtimes License, read 2026-10-28, Using it to train AI: The licence document is silent here; it was read in full on 2026-10-28, 2,058 characters long.
  • Esoteric Software, Spine Runtimes, Spine Runtimes License, read 2026-10-28, What the developer owns: The licence document is silent here; it was read in full on 2026-10-28, 2,058 characters long.
  • Esoteric Software, Spine Runtimes, Spine Runtimes License, read 2026-10-28, The licence, in its words: provided that each user of the Products must obtain their own Spine Editor license
  • Fab, Fab EULA, read 2026-10-08, Passing its code or content on with the source: you may, however, only authorize end users to make use of Content solely as incorporated in the Project in object code
  • Fab, Fab EULA, read 2026-10-08, Using it to train AI: Under a Standard License, you may not use NoAI Content (a) in datasets utilized by Generative AI Programs
  • Fab, Fab EULA, read 2026-10-08, What the developer owns: you own all rights, other than rights in the Content, in anything you make with the Content under this agreement
  • Fab, Fab EULA, read 2026-10-08, The licence, in its words: Under a Standard License, you may not Distribute Content on a standalone basis to third parties except to your collaborators
  • Firelight Technologies, FMOD, FMOD EULA, read 2026-10-28, Passing its code or content on with the source: FMOD SDK files are not to be distributed with the exception of the FMOD Engine run-time libraries
  • Firelight Technologies, FMOD, FMOD EULA, read 2026-10-28, Using it to train AI: The licence document is silent here; it was read in full on 2026-10-28, 17,571 characters long.
  • Firelight Technologies, FMOD, FMOD EULA, read 2026-10-28, What the developer owns: The licence document is silent here; it was read in full on 2026-10-28, 17,571 characters long.
  • Firelight Technologies, FMOD, FMOD EULA, read 2026-10-28, The licence, in its words: FMOD SDK files are not to be distributed with the exception of the FMOD Engine run-time libraries
  • Firelight Technologies, FMOD, FMOD licensing page, read 2026-10-28, Passing its code or content on with the source: A license gives the holder permission to distribute the FMOD Engine in a game.
  • Firelight Technologies, FMOD, FMOD licensing page, read 2026-10-28, Using it to train AI: The licence document is silent here; it was read in full on 2026-10-28, 3,017 characters long.
  • Firelight Technologies, FMOD, FMOD licensing page, read 2026-10-28, What the developer owns: The licence document is silent here; it was read in full on 2026-10-28, 3,017 characters long.
  • Firelight Technologies, FMOD, FMOD licensing page, read 2026-10-28, The licence, in its words: A license gives the holder permission to distribute the FMOD Engine in a game.
  • Havok, Havok terms of use, read 2026-10-28, Passing its code or content on with the source: Any reproduction or redistribution of the Products not in accordance with the applicable License Agreement is expressly prohibited by law
  • Havok, Havok terms of use, read 2026-10-28, Using it to train AI: The licence document is silent here; it was read in full on 2026-10-28, 41,642 characters long.
  • Havok, Havok terms of use, read 2026-10-28, What the developer owns: The licence document is silent here; it was read in full on 2026-10-28, 41,642 characters long.
  • Havok, Havok terms of use, read 2026-10-28, The licence, in its words: Any reproduction or redistribution of the Products not in accordance with the applicable License Agreement is expressly prohibited by law
  • inkle, ink, ink MIT licence, read 2026-10-28, Passing its code or content on with the source: to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  • inkle, ink, ink MIT licence, read 2026-10-28, Using it to train AI: The licence document is silent here; it was read in full on 2026-10-28, 2,369 characters long.
  • inkle, ink, ink MIT licence, read 2026-10-28, What the developer owns: The licence document is silent here; it was read in full on 2026-10-28, 2,369 characters long.
  • inkle, ink, ink MIT licence, read 2026-10-28, The licence, in its words: to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  • Mirror, Mirror MIT licence, read 2026-10-28, Passing its code or content on with the source: Permission is hereby granted, free of charge, to any person obtaining a copy
  • Mirror, Mirror MIT licence, read 2026-10-28, Using it to train AI: The licence document is silent here; it was read in full on 2026-10-28, 2,366 characters long.
  • Mirror, Mirror MIT licence, read 2026-10-28, What the developer owns: The licence document is silent here; it was read in full on 2026-10-28, 2,366 characters long.
  • Mirror, Mirror MIT licence, read 2026-10-28, The licence, in its words: Permission is hereby granted, free of charge, to any person obtaining a copy
  • OGRE, OGRE licensing page, read 2026-10-28, Passing its code or content on with the source: The only condition is that you distribute the license text included in our distribution with any software that uses OGRE.
  • OGRE, OGRE licensing page, read 2026-10-28, Using it to train AI: The licence document is silent here; it was read in full on 2026-10-28, 4,114 characters long.
  • OGRE, OGRE licensing page, read 2026-10-28, What the developer owns: The licence document is silent here; it was read in full on 2026-10-28, 4,114 characters long.
  • OGRE, OGRE licensing page, read 2026-10-28, The licence, in its words: The only condition is that you distribute the license text included in our distribution with any software that uses OGRE.
  • Open 3D Engine, O3DE licence file, read 2026-10-28, Passing its code or content on with the source: The default license for Open 3D Engine is the Apache License, Version 2.0
  • Open 3D Engine, O3DE licence file, read 2026-10-28, Using it to train AI: The licence document is silent here; it was read in full on 2026-10-28, 2,420 characters long.
  • Open 3D Engine, O3DE licence file, read 2026-10-28, What the developer owns: The licence document is silent here; it was read in full on 2026-10-28, 2,420 characters long.
  • Open 3D Engine, O3DE licence file, read 2026-10-28, The licence, in its words: you may elect at your option to use the Open 3D Engine under the MIT License
  • RPG Maker, RPG Maker EULA, read 2026-10-28, Passing its code or content on with the source: or enabling of transmission of This Software in whole or in part without the prior written consent of the Company
  • RPG Maker, RPG Maker EULA, read 2026-10-28, Using it to train AI: The licence document is silent here; it was read in full on 2026-10-28, 20,936 characters long.
  • RPG Maker, RPG Maker EULA, read 2026-10-28, What the developer owns: The licence document is silent here; it was read in full on 2026-10-28, 20,936 characters long.
  • RPG Maker, RPG Maker EULA, read 2026-10-28, The licence, in its words: Extraction of Company Programs or Company Assets from User Games and Distribution, etc.
  • Unity Asset Store, Asset Store Terms of Service and EULA, read 2026-10-27, Passing its code or content on with the source: to reproduce, publicly display, publicly perform, transmit, and distribute the Asset as incorporated and embedded in that Licensed Product;
  • Unity Asset Store, Asset Store Terms of Service and EULA, read 2026-10-27, Using it to train AI: (g) use the Unity Asset Store or Assets for purposes such as training an artificial intelligence or machine learning model without the express consent from the Provider and/or Unity.
  • Unity Asset Store, Asset Store Terms of Service and EULA, read 2026-10-27, What the developer owns: The licence document is silent here; it was read in full on 2026-10-27, 51,499 characters long.
  • Unity Asset Store, Asset Store Terms of Service and EULA, read 2026-10-27, The licence, in its words: (g) use the Unity Asset Store or Assets for purposes such as training an artificial intelligence or machine learning model without the express consent from the Provider and/or Unity.
  • Unity, Editor, Unity Editor Software Terms, read 2026-10-28, Passing its code or content on with the source: you may distribute the Unity Runtime as an integrated part of your Projects, solely as embedded or incorporated into your Projects
  • Unity, Editor, Unity Editor Software Terms, read 2026-10-28, Using it to train AI: The licence document is silent here; it was read in full on 2026-10-28, 31,160 characters long.
  • Unity, Editor, Unity Editor Software Terms, read 2026-10-28, What the developer owns: The licence document is silent here; it was read in full on 2026-10-28, 31,160 characters long.
  • Unity, Editor, Unity Editor Software Terms, read 2026-10-28, The licence, in its words: you may distribute the Unity Runtime as an integrated part of your Projects, solely as embedded or incorporated into your Projects, and solely to third parties to whom you license or sell your Projects
  • Unity, packages, Unity Package Distribution License, read 2026-10-28, Passing its code or content on with the source: Exercise of the distribution license granted under this License is limited to distribution of the Work as binaries integrated with your Project Content
  • Unity, packages, Unity Package Distribution License, read 2026-10-28, Using it to train AI: The licence document is silent here; it was read in full on 2026-10-28, 7,974 characters long.
  • Unity, packages, Unity Package Distribution License, read 2026-10-28, What the developer owns: The licence document is silent here; it was read in full on 2026-10-28, 7,974 characters long.
  • Unity, packages, Unity Package Distribution License, read 2026-10-28, The licence, in its words: Exercise of the distribution license granted under this License is limited to distribution of the Work as binaries integrated with your Project Content
  • Valve, Steamworks SDK, Steamworks SDK Access Agreement, read 2026-10-28, Passing its code or content on with the source: reproduce and distribute the part of the SDK provided inside the folder named redistributable_bin
  • Valve, Steamworks SDK, Steamworks SDK Access Agreement, read 2026-10-28, Using it to train AI: The licence document is silent here; it was read in full on 2026-10-28, 8,804 characters long.
  • Valve, Steamworks SDK, Steamworks SDK Access Agreement, read 2026-10-28, What the developer owns: The licence document is silent here; it was read in full on 2026-10-28, 8,804 characters long.
  • Valve, Steamworks SDK, Steamworks SDK Access Agreement, read 2026-10-28, The licence, in its words: use and locally reproduce the SDK in source code form, solely to develop the Licensee Software

Read, then left out

After reading, 4 named documents were excluded as off the board's subject; the reasons sit below. They count as read but give no answers.

How the figures are worked out

Each licence's own engines', middleware makers' and asset stores' own licences were read through estate-fetch and stored whole (sha256 on every row).

For every licence document, four questions were answered from its own words: passing its code or content on with the source, using it to train AI, what the developer owns, the licence, in its words.

Every stated answer carries the sentence it rests on, checked against the stored text; 'not stated' means the licence document read does not address the question.

A licence with several licence documents reads 'varies' where they disagree.

19 licences, 20 licence documents.

The 24 pages we read
Take this figure with you

7 of 19 engine, middleware and asset store licences we read let their code or content leave a studio only compiled into the shipped game, read 28 October 2026.

Passing its code or content on with the source, by licence: only compiled into the shipped game 7 of 19, allowed, with its open licence attached 6 of 19, not allowed without the vendor's permission 4 of 19, only to someone holding the vendor's own licence 2 of 19 (19 licences, read 28 October 2026).

Using it to train AI, by licence: not stated 15 of 19, barred 3 of 19, needs the vendor's or provider's consent 1 of 19 (19 licences, read 28 October 2026).

What the developer owns, by licence: not stated 16 of 19, the developer's own work, not the vendor's 3 of 19 (19 licences, read 28 October 2026).

The licence, in its words, by licence: stated 19 of 19 (19 licences, read 28 October 2026).

Suggested citation: "What a game's source tree lets a seller pass on", updated 2026-10-28, https://sellgamesourcecode.com/datasets/game-engine-code-pass-on-terms/.

HTML to show this figure elsewhere
7 of 19 engine, middleware and asset store licences we read let their code or content leave a studio only compiled into the shipped game, read 28 October 2026.
What a game's source tree lets a seller pass on, sellgamesourcecode.com

For machines: JSON, CSV, Markdown.

CSV download (80 answers, worked out 2026-10-28)

Questions this data answers

Which parts of a game's source tree may a seller pass on to a buyer, and may they be used to train AI, under each engine's, middleware's and asset store's own licence?

7 of 19 engine, middleware and asset store licences we read let their code or content leave a studio only compiled into the shipped game, read 28 October 2026.

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