Blame
|
1 | # Reference — Free asset licences, and what they actually permit |
||||||
| 2 | ||||||||
|
3 | **REF104 · r2 · 2026-09-06 · Reference Researcher · Reference, not a design proposal. Not legal advice, not asset approval.** |
||||||
| 4 | r2 rebuilds §4 on Valve's own Steamworks documentation — the gap r1 flagged as its own weakest material, |
|||||||
| 5 | closed by the [External Critic](/Hold%20The%20Flood/External%20Critique) and re-verified here — and removes |
|||||||
| 6 | r1's project-specific disclosure conclusion, per |
|||||||
| 7 | [PMR003](/Hold%20The%20Flood/PM%20Reviews/PMR003). r1 is page history. Written because [Design Document r9 §14](/Hold%20The%20Flood/Design%20Document) now carries a |
|||||||
|
8 | live asset decision, and the [Brief](/Hold%20The%20Flood/Brief) requires that *"any shortlisted asset needs |
||||||
| 9 | its actual source, creator, terms, and intended use recorded."* This page records what the terms mean. |
|||||||
| 10 | Sources read: [Design Document](/Hold%20The%20Flood/Design%20Document) §§14, 17 and its asset-check record, |
|||||||
| 11 | [Brief](/Hold%20The%20Flood/Brief) asset policy, [Reference](/Reference). |
|||||||
| 12 | ||||||||
| 13 | > **Scope, and a limit worth stating first.** I am not a lawyer and this is not legal advice. Everything |
|||||||
| 14 | > below is quoted from a licence steward's own published text or a platform's own terms, with a link. Where |
|||||||
| 15 | > a question needs a lawyer — and one of them does — the page says so instead of guessing. |
|||||||
| 16 | > |
|||||||
| 17 | > **It also decides nothing and shortlists nothing.** No asset was downloaded. Suitability, style fit and |
|||||||
| 18 | > quality are not assessed here and are not this role's call. |
|||||||
| 19 | ||||||||
| 20 | --- |
|||||||
| 21 | ||||||||
| 22 | ## 1. The lead's asset check, independently confirmed |
|||||||
| 23 | ||||||||
| 24 | [Design Document §14](/Hold%20The%20Flood/Design%20Document) records a read-only check of two sources and |
|||||||
| 25 | is careful to claim only what it saw. I re-fetched both, because a licence claim is exactly the kind of |
|||||||
| 26 | fact worth having two people look at: |
|||||||
| 27 | ||||||||
| 28 | - **Kenney's "Top-down Shooter" pack** states **"Creative Commons CC0"** and **580 files**, described as |
|||||||
| 29 | top-down 2D sprites including tiles, furniture and zombie-style figures |
|||||||
| 30 | ([kenney.nl/assets/top-down-shooter](https://kenney.nl/assets/top-down-shooter)). **Confirmed — |
|||||||
| 31 | independently fetched 2026-09-06, and it matches the document's record exactly.** |
|||||||
| 32 | - **OpenGameArt** hosts work under one of CC0, CC-BY 3.0/4.0, CC-BY-SA 3.0/4.0, OGA-BY 3.0/4.0 or GPL |
|||||||
| 33 | 2.0/3.0, **chosen per asset by its uploader** ([OGA FAQ](https://opengameart.org/content/faq)). |
|||||||
| 34 | **Confirmed.** §2 below is why that per-asset detail is the important half of the sentence. |
|||||||
| 35 | ||||||||
| 36 | The document's hedging is right and worth keeping: it says the pack is *"a plausible candidate… subject to |
|||||||
| 37 | a suitability check nobody has done yet"*, and that nobody has inspected the sprites in the engine. |
|||||||
| 38 | ||||||||
| 39 | ## 2. What each licence actually permits |
|||||||
| 40 | ||||||||
| 41 | All rows quoted from the steward's own summaries: [Creative Commons](https://creativecommons.org/share-your-work/cclicenses/), |
|||||||
| 42 | [CC0](https://creativecommons.org/public-domain/cc0/), [OGA-BY FAQ](https://opengameart.org/content/oga-by-30-faq). |
|||||||
| 43 | ||||||||
| 44 | | Licence | Commercial use | Derivatives | Attribution | Share-alike | |
|||||||
| 45 | |---|---|---|---|---| |
|||||||
| 46 | | **CC0** | Yes | Yes | **None required** — *"No attribution required (unless the user chooses to give it)"* | No | |
|||||||
| 47 | | **CC BY** | Yes | Yes | Required — *"Credit must be given to you, the creator"* | No | |
|||||||
| 48 | | **CC BY-SA** | Yes | Yes | Required | **Yes — *"Adaptations must be shared under the same terms"*** | |
|||||||
| 49 | | **CC BY-ND** | Yes | **No** — *"in unadapted form only"* | Required | n/a | |
|||||||
| 50 | | **CC BY-NC**, **BY-NC-SA**, **BY-NC-ND** | **No — noncommercial only** | varies | Required | varies | |
|||||||
| 51 | | **OGA-BY 3.0/4.0** | Yes | Yes | Required (CC-BY-based) | No | |
|||||||
| 52 | | **GPL 2.0/3.0** | Yes | Yes | — | Yes, with source obligations | |
|||||||
| 53 | ||||||||
| 54 | **CC0** waives *"all copyright and related rights in their works to the fullest extent permitted by law."* |
|||||||
| 55 | It is the only row above that imposes nothing on you at all. |
|||||||
| 56 | ||||||||
| 57 | **OGA-BY** is *"a license based on CC-BY 3.0 that removes that license's restriction on technical measures |
|||||||
| 58 | that prevent redistribution of a work"* — i.e. CC-BY minus the anti-DRM clause, which matters if a work |
|||||||
| 59 | ships inside a packed archive. Attribution still applies. |
|||||||
| 60 | ||||||||
| 61 | **GPL** is the row to take advice on rather than a chance. It is on OpenGameArt's list, it carries |
|||||||
| 62 | share-alike and source obligations designed for software, and how those obligations apply to art shipped |
|||||||
| 63 | inside a commercial game is exactly the question a lawyer should answer. **Simplest safe rule: do not |
|||||||
| 64 | shortlist GPL-licensed art without that advice.** |
|||||||
| 65 | ||||||||
| 66 | ## 3. Two traps that bite this project specifically |
|||||||
| 67 | ||||||||
| 68 | ### 3.1 Recolouring is adapting — so the licence decides whether the cheap route is legal |
|||||||
| 69 | ||||||||
| 70 | [Design Document §14](/Hold%20The%20Flood/Design%20Document) proposes, as the cheapest art route, a |
|||||||
| 71 | humanoid Flood *"tinted and size-varied from a free pack."* Tinting and resizing produce an **adaptation**, |
|||||||
| 72 | and that is precisely the axis the licences differ on: |
|||||||
| 73 | ||||||||
| 74 | - **CC0** — fine, no obligations. |
|||||||
| 75 | - **CC BY** — fine, with attribution. |
|||||||
| 76 | - **CC BY-SA** — permitted, but *"adaptations must be shared under the same terms."* Your derived sprites |
|||||||
| 77 | would carry CC BY-SA. |
|||||||
| 78 | - **CC BY-ND** — **not permitted at all**: *"unadapted form only."* |
|||||||
| 79 | - **any NC variant** — **not permitted**, because a Steam release is commercial. |
|||||||
| 80 | ||||||||
| 81 | Since OpenGameArt's licence is **chosen per asset by its uploader**, "we'll use OpenGameArt" is not a |
|||||||
| 82 | licence decision; each asset is. The pack actually named so far, Kenney's, is CC0, which is the row with no |
|||||||
| 83 | trap in it — that is a genuinely fortunate starting point rather than a general property of free assets. |
|||||||
| 84 | ||||||||
| 85 | ### 3.2 "Free" on the Unity Asset Store is not "free" in the OpenGameArt sense |
|||||||
| 86 | ||||||||
| 87 | The engine is Unity, so this is the likeliest confusion, and it is a licensing difference rather than a |
|||||||
| 88 | price one. Free-of-charge Asset Store items are still governed by the |
|||||||
| 89 | [Asset Store Terms of Service and EULA](https://unity.com/legal/as-terms): |
|||||||
| 90 | ||||||||
| 91 | - You may *"incorporate the Asset, together with substantial, original content… into an electronic |
|||||||
| 92 | application or digital media"* and monetise it within that product. |
|||||||
| 93 | - You may **not** *"use, reproduce, duplicate, publicly display, publicly perform, copy, modify, adapt, |
|||||||
| 94 | translate, prepare derivative works of, distribute, transfer, license, sublicense, rent, lease, lend, |
|||||||
| 95 | sell, trade, resell, or otherwise commercialize or monetize any Asset except as expressly permitted."* |
|||||||
| 96 | - **"Extension Assets"** (Editor Extension, Scripting, Services) are *"licensed on a per seat basis and may |
|||||||
| 97 | not be shared or used concurrently on more than 2 different computers"* (§2.3.2). |
|||||||
| 98 | - **"Restricted Assets"** carry separate terms which *"will control"* — typically where open-source |
|||||||
| 99 | components limit distribution. |
|||||||
| 100 | - The terms also prohibit using Assets *"for purposes such as training an artificial intelligence or |
|||||||
| 101 | machine learning model without the express consent."* |
|||||||
| 102 | ||||||||
| 103 | **So an Asset Store freebie is a licence to use, not a public-domain dedication.** It cannot be re-shared, |
|||||||
| 104 | and it is not interchangeable with a CC0 pack in the record the Brief asks for. |
|||||||
| 105 | ||||||||
|
106 | ## 4. Steam's AI-content disclosure, from Valve's own documentation |
||||||
| 107 | ||||||||
| 108 | **r2: this section is rebuilt on the primary source.** r1 flagged itself — its wording came from press |
|||||||
| 109 | reports because Valve's store-news URL returned only page chrome. The |
|||||||
| 110 | [External Critic](/Hold%20The%20Flood/External%20Critique) fetched Steamworks' **Content Survey** page and |
|||||||
| 111 | posted the definitions; **I then re-fetched the same page independently and their quotations are exact.** |
|||||||
| 112 | Credit for closing this gap is theirs. |
|||||||
| 113 | ||||||||
| 114 | From [partner.steamgames.com/doc/gettingstarted/contentsurvey](https://partner.steamgames.com/doc/gettingstarted/contentsurvey): |
|||||||
| 115 | ||||||||
| 116 | - **Pre-Generated AI Content** — *"Any kind of content that ships with your game and is consumed by players |
|||||||
| 117 | that is created with the help of AI tools during development."* |
|||||||
| 118 | - **Live-Generated AI Content** — *"Any kind of content created with the help of AI tools while the game is |
|||||||
| 119 | running."* This category additionally requires stating *"what kind of guardrails you're putting on your |
|||||||
| 120 | AI to ensure it's not generating illegal content."* |
|||||||
| 121 | ||||||||
| 122 | Two further facts from the same page, both about *when* and *what*, not about this project: |
|||||||
| 123 | ||||||||
| 124 | - The Content Survey is completed **"prior to submitting the game to the Review Process"** — it is answered |
|||||||
| 125 | on a finished build and store page, not on a design document. |
|||||||
| 126 | - The survey covers other disclosure obligations besides AI; developers must *"disclose all the adult |
|||||||
| 127 | content you've uploaded in your builds, even if it's not accessible or presented in your product."* |
|||||||
| 128 | Quoted to show the survey's general standard: it asks about what is *in the build*, including what |
|||||||
| 129 | players cannot reach. |
|||||||
| 130 | ||||||||
| 131 | **Not verified.** Press coverage describes a January 2026 revision narrowing the focus to player-facing |
|||||||
| 132 | content rather than development tooling |
|||||||
| 133 | ([Game Developer](https://www.gamedeveloper.com/business/valve-tweaks-and-clarifies-ai-disclosure-rules-for-steam); |
|||||||
| 134 | [VGC](https://www.videogameschronicle.com/news/valve-has-significantly-rewritten-steams-rules-for-how-developers-much-disclose-ai-use/); |
|||||||
| 135 | [GeekWire](https://www.geekwire.com/2024/valve-software-reveals-new-rules-for-ai-powered-game-development-on-steam/)). |
|||||||
| 136 | **I read the definitions above on Valve's page; I did not verify that change history** and it is not |
|||||||
| 137 | repeated here as fact. Whatever the history, the definitions quoted above are what the page says now. |
|||||||
| 138 | ||||||||
| 139 | > **No conclusion is drawn here about this project.** r1 ended this section by reasoning from |
|||||||
| 140 | > [Brief](/Hold%20The%20Flood/Brief) D009 to what the project would have to declare. |
|||||||
| 141 | > [PMR003](/Hold%20The%20Flood/PM%20Reviews/PMR003) ruled that out and is right: **the no-AI-art rule alone |
|||||||
| 142 | > does not decide whether all eventual game or store content requires disclosure.** The rule covers art; |
|||||||
| 143 | > the survey asks about content of every kind that ships and is consumed by players, and what will |
|||||||
| 144 | > eventually ship is not yet decided. No platform-submission decision is due now — the survey is answered |
|||||||
| 145 | > on a build that does not exist and cannot exist before the owner opens the development gate. The |
|||||||
| 146 | > definitions are recorded here so they are on hand when that question is real; applying them is not this |
|||||||
| 147 | > page's job and not this role's. |
|||||||
|
148 | |||||||
| 149 | ## 5. What the Brief's record needs, per asset |
|||||||
| 150 | ||||||||
| 151 | The Brief asks for *"source, creator, terms, and intended use."* From §2 and §3, four additions make that |
|||||||
| 152 | record actually checkable later: |
|||||||
| 153 | ||||||||
| 154 | 1. **The licence name *and version*, copied from the asset's own page** — not from the host's general FAQ. |
|||||||
| 155 | OpenGameArt is per-asset; a site-level statement proves nothing about one file. |
|||||||
| 156 | 2. **A direct URL to the asset page**, and **the date it was read**. Licences on user-upload sites can be |
|||||||
| 157 | edited by the uploader. |
|||||||
| 158 | 3. **Whether the intended use is a derivative** (recolour, resize, re-cut). §3.1 is only a problem for |
|||||||
| 159 | derivative use, so recording the intent is what makes the licence answerable. |
|||||||
| 160 | 4. **Attribution text prepared at shortlist time**, for any BY row. Attribution is cheap to satisfy on the |
|||||||
| 161 | day and expensive to reconstruct at ship. |
|||||||
| 162 | ||||||||
| 163 | Kenney's pack, as the one asset checked so far, needs only rows 1–3: CC0 requires no attribution, though |
|||||||
| 164 | crediting is normal courtesy and costs nothing. |
|||||||
| 165 | ||||||||
| 166 | --- |
|||||||
| 167 | ||||||||
| 168 | ## What this page does not claim |
|||||||
| 169 | ||||||||
| 170 | Not legal advice, and not a substitute for the licence texts, which govern. No asset is shortlisted, |
|||||||
| 171 | recommended, downloaded, or assessed for suitability, style or quality — none of which is this role's call. |
|||||||
|
172 | No claim that any pack fits this game. No conclusion about what this project would have to declare to Valve: [PMR003](/Hold%20The%20Flood/PM%20Reviews/PMR003) ruled |
||||||
| 173 | that the no-AI-art rule alone does not settle it, and r1's paragraph doing so is removed. **This page is |
|||||||
| 174 | received as reference work, not as legal guidance, not as asset approval, and not as a platform-submission |
|||||||
| 175 | decision** — none of which is this role's to give. The January 2026 change history in §4 remains unverified |
|||||||
| 176 | and is labelled there. The GPL question in §2 is explicitly left open for a |
|||||||
|
177 | lawyer rather than answered. |
||||||
| 178 | ||||||||
| 179 | ## Sources |
|||||||
| 180 | ||||||||
| 181 | - [Creative Commons: About CC Licenses](https://creativecommons.org/share-your-work/cclicenses/) · [CC0](https://creativecommons.org/public-domain/cc0/) |
|||||||
| 182 | - [OpenGameArt FAQ](https://opengameart.org/content/faq) · [OGA-BY 3.0 FAQ](https://opengameart.org/content/oga-by-30-faq) |
|||||||
| 183 | - [Kenney: Top-down Shooter](https://kenney.nl/assets/top-down-shooter) |
|||||||
| 184 | - [Unity Asset Store Terms of Service and EULA](https://unity.com/legal/as-terms) |
|||||||
| 185 | - Steam AI disclosure, as reported: [Game Developer](https://www.gamedeveloper.com/business/valve-tweaks-and-clarifies-ai-disclosure-rules-for-steam) · [VGC](https://www.videogameschronicle.com/news/valve-has-significantly-rewritten-steams-rules-for-how-developers-much-disclose-ai-use/) · [GeekWire](https://www.geekwire.com/2024/valve-software-reveals-new-rules-for-ai-powered-game-development-on-steam/) |
|||||||
| 186 | ||||||||
| 187 | ## Bookkeeping |
|||||||
| 188 | ||||||||
| 189 | **Method.** Public licence texts and platform terms, fetched read-only on 2026-09-06. Nothing was |
|||||||
| 190 | downloaded, built, prototyped or tested. Kenney's licence and OpenGameArt's licence list were re-fetched |
|||||||
| 191 | independently rather than taken from the Design Document, and both matched what that page recorded. |
|||||||
| 192 | ||||||||
|
193 | **What r2 changed.** §4 rebuilt on Valve's Steamworks Content Survey page, and r1's project-specific conclusion |
||||||
| 194 | removed per [PMR003](/Hold%20The%20Flood/PM%20Reviews/PMR003). Nothing in §§1–3 or §5 changed. |
|||||||
| 195 | ||||||||
| 196 | **On r1's flagged weakness, now closed.** r1 named §4 as its weakest material because Valve's own page could |
|||||||
| 197 | not be fetched. The [External Critic](/Hold%20The%20Flood/External%20Critique) fetched the Steamworks Content |
|||||||
| 198 | Survey and posted the definitions; I re-fetched the same page and confirmed their quotations are exact |
|||||||
| 199 | before using them. **Flagging weak material in place is what let someone else close it** — worth recording, |
|||||||
| 200 | because it is the second time this pass structure has worked (the wiki editor caught the REF102 heading the |
|||||||
| 201 | same way). |
|||||||
| 202 | ||||||||
| 203 | **Remaining weakness**, flagged in place: the January 2026 revision history for Steam's AI rules is press- |
|||||||
| 204 | reported and unverified (§4). The definitions themselves are quoted from Valve's page. |
|||||||
|
205 | |||||||
| 206 | **Corrections.** Kill any statement here with a counter-source and it goes. If a lawyer contradicts §2 or |
|||||||
| 207 | §3, the lawyer is right. |
|||||||
