Add nine R06 sources covering a second CC0 HDRI house, isometric 2D, and no-attribution loops.

Co-authored-by: Cursor <cursoragent@cursor.com>

Author: TMHSDigital

CONTRIBUTING.md

@@ -41,7 +41,7 @@ One new markdown file is enough — the website rebuilds from frontmatter on dep
 - `commercial`: `true` / `false` / `unknown` / `varies`. Use `varies` for aggregators where some files are commercial-ok and others are not. The site still shows these under Commercial OK, labeled **per-file review**, so they are not silently excluded and not silently treated as a blanket grant.
 - `attribution_required`: `true` / `false`.
 - `attribution_string`: optional copy-paste credit.
-- `publisher`: optional. Set when the same rights-holding publisher has more than one catalog entry (Kenney, Quaternius, KayKit, Google Fonts, OpenGameArt, LuizMelo, 0x72, Blender Studio, Material Maker). Do not set this to a generic host (GitHub, Hugging Face).
+- `publisher`: optional. Set when the same rights-holding publisher has more than one catalog entry (Kenney, Quaternius, KayKit, Google Fonts, OpenGameArt, LuizMelo, 0x72, Blender Studio, Material Maker, Tiny Speck, Screaming Brain Studios). Do not set this to a generic host (GitHub, Hugging Face).
 - `grid_dimensions` / `camera_perspective` / `hardware_tags`: optional 2D/UI metadata.
 - `verified`: ISO date (`YYYY-MM-DD`) of your last license check.
 - `status`: `active` | `needs-review` | `deprecated`.

README.md

@@ -3,15 +3,15 @@
 [![Website](https://img.shields.io/website?url=https%3A%2F%2Ftmhsdigital.github.io%2FFree-Game-Dev-Assets%2F&up_message=live&down_message=down&label=website)](https://tmhsdigital.github.io/Free-Game-Dev-Assets/)
 [![Pages](https://img.shields.io/github/actions/workflow/status/TMHSDigital/Free-Game-Dev-Assets/pages.yml?label=pages)](https://github.com/TMHSDigital/Free-Game-Dev-Assets/actions/workflows/pages.yml)
 [![License: CC0-1.0](https://img.shields.io/badge/license-CC0--1.0-lightgrey.svg)](LICENSE)
-[![Sources](https://img.shields.io/badge/sources-265-informational)](https://tmhsdigital.github.io/Free-Game-Dev-Assets/)
+[![Sources](https://img.shields.io/badge/sources-274-informational)](https://tmhsdigital.github.io/Free-Game-Dev-Assets/)
 [![GitHub stars](https://img.shields.io/github/stars/TMHSDigital/Free-Game-Dev-Assets)](https://github.com/TMHSDigital/Free-Game-Dev-Assets/stargazers)
 [![PRs welcome](https://img.shields.io/badge/PRs-welcome-brightgreen.svg)](CONTRIBUTING.md)
 
 A curated public catalog of **free and commercially usable** assets, libraries, and tools for game development and related interactive work.
 
 This repository **indexes and documents** sources. It does **not** rehost third-party binary packs. Every entry points to the original publisher so licenses stay authoritative at the source.
 
-**[Browse 265 sources →](https://tmhsdigital.github.io/Free-Game-Dev-Assets/)**
+**[Browse 274 sources →](https://tmhsdigital.github.io/Free-Game-Dev-Assets/)**
 
 ---
 
@@ -53,13 +53,13 @@ npx --yes serve site/dist
 | --- | ---: | --- | --- |
 | **3D** | 65 | Models, scans, PBR textures & materials | [`catalog/3d/`](catalog/3d/) |
 | **Tools** | 62 | Editors, pipeline, TTS, Godot add-ons | [`catalog/tools/`](catalog/tools/) |
-| **2D** | 37 | Sprites, UI/HUD, icons, palettes | [`catalog/2d/`](catalog/2d/) |
-| **Audio** | 25 | SFX, music, foley, impulse responses | [`catalog/audio/`](catalog/audio/) |
-| **Characters** | 21 | Generators & modular humanoids | [`catalog/characters/`](catalog/characters/) |
-| **Fonts** | 17 | OFL and commercial-ok typefaces | [`catalog/fonts/`](catalog/fonts/) |
-| **Environment** | 14 | HDRI, terrain DEMs, geodata | [`catalog/environment/`](catalog/environment/) |
-| **Shaders & VFX** | 13 | Shaders, particle/FX resources | [`catalog/shaders-vfx/`](catalog/shaders-vfx/) |
-| **Animation** | 11 | MoCap databases & character clips | [`catalog/animation/`](catalog/animation/) |
+| **2D** | 39 | Sprites, UI/HUD, icons, palettes | [`catalog/2d/`](catalog/2d/) |
+| **Audio** | 26 | SFX, music, foley, impulse responses | [`catalog/audio/`](catalog/audio/) |
+| **Characters** | 23 | Generators & modular humanoids | [`catalog/characters/`](catalog/characters/) |
+| **Fonts** | 18 | OFL and commercial-ok typefaces | [`catalog/fonts/`](catalog/fonts/) |
+| **Environment** | 15 | HDRI, terrain DEMs, geodata | [`catalog/environment/`](catalog/environment/) |
+| **Shaders & VFX** | 14 | Shaders, particle/FX resources | [`catalog/shaders-vfx/`](catalog/shaders-vfx/) |
+| **Animation** | 12 | MoCap databases & character clips | [`catalog/animation/`](catalog/animation/) |
 
 Master index: [`catalog/README.md`](catalog/README.md)
 
@@ -115,20 +115,22 @@ High-signal CC0 / clearly permissive sources that cover most early production ne
 | Atlas-optimized kits | KayKit | [`catalog/3d/kaykit.md`](catalog/3d/kaykit.md) |
 | Seamless PBR materials | ambientCG | [`catalog/3d/ambientcg.md`](catalog/3d/ambientcg.md) |
 | HDRIs / calibrated env | Poly Haven | [`catalog/environment/poly-haven.md`](catalog/environment/poly-haven.md) |
+| Second CC0 HDRI publisher | Open HDRI | [`catalog/environment/open-hdri.md`](catalog/environment/open-hdri.md) |
 | Extra PBR + SBSAR | TextureCan | [`catalog/3d/texturecan.md`](catalog/3d/texturecan.md) |
 | UI icons (brand-free) | Lucide | [`catalog/2d/lucide-icons.md`](catalog/2d/lucide-icons.md) |
 | Hand-drawn 2D vectors | Glitch archive | [`catalog/2d/glitch-archive.md`](catalog/2d/glitch-archive.md) |
 | Input prompt icons | Kenney Input Prompts | [`catalog/2d/kenney-input-prompts.md`](catalog/2d/kenney-input-prompts.md) |
 | Pro SFX dumps | Sonniss #GameAudioGDC | [`catalog/audio/sonniss-gdc.md`](catalog/audio/sonniss-gdc.md) |
 | Attribution music | Incompetech | [`catalog/audio/incompetech.md`](catalog/audio/incompetech.md) |
+| No-attribution music loops | Abstraction Music Loop Bundle | [`catalog/audio/tallbeard-abstraction-music-loop-bundle.md`](catalog/audio/tallbeard-abstraction-music-loop-bundle.md) |
 | Pixel / terminal font | Departure Mono | [`catalog/fonts/departure-mono.md`](catalog/fonts/departure-mono.md) |
 | Localization fonts | Noto Sans | [`catalog/fonts/noto-sans.md`](catalog/fonts/noto-sans.md)
 
 ---
 
 ## Licenses & provenance
 
-Read [`docs/licenses.md`](docs/licenses.md), [`docs/provenance.md`](docs/provenance.md), [`docs/high-risk.md`](docs/high-risk.md), [`docs/fivem.md`](docs/fivem.md), [`docs/ai-assets.md`](docs/ai-assets.md), [`docs/trust-score.md`](docs/trust-score.md), and [`docs/game-vs-video-licensing.md`](docs/game-vs-video-licensing.md) before mixing packs into a commercial build. Research drafts: [`docs/research-index.md`](docs/research-index.md) (`R01`–`R05`). Short version:
+Read [`docs/licenses.md`](docs/licenses.md), [`docs/provenance.md`](docs/provenance.md), [`docs/high-risk.md`](docs/high-risk.md), [`docs/fivem.md`](docs/fivem.md), [`docs/ai-assets.md`](docs/ai-assets.md), [`docs/trust-score.md`](docs/trust-score.md), and [`docs/game-vs-video-licensing.md`](docs/game-vs-video-licensing.md) before mixing packs into a commercial build. Research drafts: [`docs/research-index.md`](docs/research-index.md) (`R01`–`R06`). Short version:
 
 - **CC0** — safest default for closed-source games; attribution not required
 - **CC-BY** — commercial OK; keep credits (BY-3.0 often wants the **author named**; BY-4.0 is usually satisfied by a credits-screen link)

RESEARCH/README.md

@@ -9,6 +9,8 @@ Deep-research drafts live here. They are **gitignored** (often bulky / drafty) e
 | **R03** | `R03-catalog-gaps-expansion.md` | Poly Haven, music, characters, TTS, AI policy, ODbL, high-risk list |
 | **R04** | `R04-catalog-round3.md` | DEM/scatter, LPC/2D, icons/a11y, pipeline compressors, Mixamo/Fab notes |
 | **R05** | `R05-gap-analysis-expansion.md` | Grid/perspective schema, Kenney prompts, KayKit Bits, 16×16 CC0 packs, DotGothic16, license spectrum |
+| **R06** | `R06-catalog-comprehensiveness-claude.md` | Wave 1: second CC0 HDRI, iso 2D hub, CC0 loops, Ark Pixel, Blender Studio rigs, Unity Labs flipbooks, GameArt2D freebies, Truebones ZOO |
+| **R06** | `R06-catalog-comprehensiveness-gemini.md` | Supplement only. Many rows already in `catalog/`. Rejects in `reject-log.md`. |
 
 Promote durable findings into `catalog/` and `docs/` — do not treat these drafts as the public source of truth.
 

catalog/2d/README.md

@@ -17,6 +17,8 @@ Optional frontmatter: `grid_dimensions`, `camera_perspective`, `hardware_tags`.
 | [ox72-dungeon-tileset](ox72-dungeon-tileset.md) | 0x72 Dungeon Tileset | CC0 | yes | active |
 | [ox72-dungeontileset-ii](ox72-dungeontileset-ii.md) | 0x72 Dungeon Tileset II | CC0 | yes | active |
 | [ninja-adventure](ninja-adventure.md) | Ninja Adventure | CC0 | yes | active |
+| [screaming-brain-studios](screaming-brain-studios.md) | Screaming Brain Studios iso tiles | CC0 | yes | active |
+| [gameart2d-freebies](gameart2d-freebies.md) | GameArt2D freebies | CC0 | yes | active |
 | [bit-bonanza](bit-bonanza.md) | Bit Bonanza | CC0 | yes | active |
 | [urizen-onebit](urizen-onebit.md) | Urizen 1Bit | CC0 | yes | active |
 | [openpeeps](openpeeps.md) | Open Peeps | CC0 | yes | active |

catalog/2d/gameart2d-freebies.md

@@ -0,0 +1,39 @@
+---
+id: gameart2d-freebies
+name: GameArt2D freebies
+url: https://www.gameart2d.com/freebies.html
+category: 2d
+subcategories: [sprites, tiles, ui, platformer]
+license: CC0
+commercial: true
+attribution_required: false
+formats: [PNG]
+tags: [cc0, platformer, gui, side-scroller]
+camera_perspective: side_scroller
+verified: 2026-08-29
+status: active
+---
+
+# GameArt2D freebies
+
+HD side-scroller characters, tilesets, backgrounds, and GUI on the Freebies page. License page splits two grants: Freebies are CC0 / public domain (games named). Paid assets are a different license with a redistribution ban. This entry is only the Freebies section.
+
+## Notes
+
+- License hub: [gameart2d.com/license.html](https://www.gameart2d.com/license.html)
+- Free Assets License: commercial or non-commercial including games; credit optional.
+- Paid Assets License: commercial games OK, but no reselling/sharing the assets themselves. Do not copy that grant onto freebies, and do not copy CC0 onto paid SKUs.
+- Mix of platformer sheets and GUI. `camera_perspective` flags the character/tileset majority; UI packs are 2d_flat chrome.
+- Not featured. Prefer Kenney / ansimuz CC0 kits when you want a shorter provenance story.
+
+## Evidence
+
+- Live license page (2026-08-29): "Assets in the Freebies section are licensed under Creative Commons Zero (CC0) / Public Domain"
+- Same section (2026-08-29): "Use them in any commercial or non-commercial projects, including games"
+
+## Related
+
+- [ansimuz-sunnyland](ansimuz-sunnyland.md)
+- [kenney-pixel-platformer](kenney-pixel-platformer.md)
+- [craftpix](craftpix.md)
+- [kenney-ui-pack](kenney-ui-pack.md)

catalog/2d/glitch-archive.md

@@ -1,36 +1,37 @@
 ---
 id: glitch-archive
 name: Glitch (CC0 asset release)
-url: https://opengameart.org/content/huge-cc0-asset-release-from-glitch
-publisher: OpenGameArt
+url: https://github.com/tinyspeck/glitch-items
+publisher: Tiny Speck
 category: 2d
 subcategories: [sprites, vectors, environments]
 license: CC0
 commercial: true
 attribution_required: false
 formats: [PNG, SVG, FLA]
 tags: [hand-drawn, vectors, large-pack]
-verified: 2026-08-24
+verified: 2026-08-29
 status: active
 ---
 
 # Glitch archive
 
-10k+ drawings, sprites, and backgrounds from the shuttered MMO Glitch. Tiny Speck dedicated the art to the public domain. The OpenGameArt post is titled as a CC0 release. Prefer community PNG/SVG conversions; a large slice of the original dump is Adobe FLA.
+10k+ drawings, sprites, and backgrounds from the shuttered MMO Glitch. Tiny Speck dedicated the art to the public domain under CC0. This entry is the items repo; sibling Tiny Speck repos (locations, avatars, etc.) are the same grant, not extra catalog ids.
 
 ## Notes
 
-- This OGA page is a news post quoting Tiny Speck, not a per-file OGA license widget
-- Tiny Speck wording is a public-domain dedication plus copyright relinquishment; OGA framed that as CC0 in the title
-- Original announcement URL cited on the post: glitchthegame.com/public-domain-game-art/ (not re-fetched this session)
-- FLA packages need Flash-era tools or community rips; do not treat FLA as engine-ready
+- Logo and trademark are excluded. Only files in the repo tree are covered.
+- Original announcement: glitchthegame.com/public-domain-game-art/ (not re-fetched this session). Community PNG/SVG conversions are usually easier than Adobe FLA.
+- FLA packages need Flash-era tools or community rips; do not treat FLA as engine-ready.
+- OpenGameArt post is a news quote of Tiny Speck, not a per-file OGA widget. Keep it in Related.
 
 ## Evidence
 
-- Live OpenGameArt post (2026-08-24), quoting Tiny Speck: "dedicated to the public domain"
-- Same quoted announcement (2026-08-24): "used by anyone, for any purpose"
+- Live `tinyspeck/glitch-items` README (2026-08-29): "All files are provided by Tiny Speck under the Creative Commons CC0 1.0 Universal License."
+- Same README (2026-08-29): "the Glitch logo and trademark are not among the things we are making available under this license."
 
 ## Related
 
+- [OpenGameArt CC0 announcement post](https://opengameart.org/content/huge-cc0-asset-release-from-glitch)
 - [lospec](lospec.md)
 - [kenney](../3d/kenney.md)

catalog/2d/ninja-adventure.md

@@ -33,3 +33,4 @@ Pixel-Boy + AAA CC0 16×16 top-down ninja town pack: 50+ characters, 30+ monster
 
 - [ox72-dungeontileset-ii](ox72-dungeontileset-ii.md)
 - [kenney-tiny-dungeon](kenney-tiny-dungeon.md)
+- [screaming-brain-studios](screaming-brain-studios.md)

catalog/2d/screaming-brain-studios.md

@@ -0,0 +1,47 @@
+---
+id: screaming-brain-studios
+name: Screaming Brain Studios (isometric tiles)
+url: https://screamingbrainstudios.itch.io
+publisher: Screaming Brain Studios
+category: 2d
+subcategories: [tiles, isometric]
+license: CC0
+commercial: true
+attribution_required: false
+formats: [PNG]
+tags: [cc0, isometric, tiles, itch, 2-to-1]
+camera_perspective: isometric_3_4
+verified: 2026-08-29
+status: active
+---
+
+# Screaming Brain Studios isometric tiles
+
+True 2:1 isometric PNG tiles (not cartoon cubes). Hub this wave: one publisher profile plus the packs whose itch Asset license field loaded as CC0. Split to per-pack files later if cards are worth it.
+
+## Notes
+
+- Profile (2026-08-29): "All assets have been released under the Public Domain (CC0) license."
+- Packs confirmed CC0 this session:
+  - Town: [iso-town-pack](https://screamingbrainstudios.itch.io/iso-town-pack) (443 town/roof tiles)
+  - Floor: [isotilepack](https://screamingbrainstudios.itch.io/isotilepack) (1,008 floor tiles)
+  - Wall: [isowallpack](https://screamingbrainstudios.itch.io/isowallpack)
+  - Overworld: [iso-overworld-pack](https://screamingbrainstudios.itch.io/iso-overworld-pack) (360 overworld tiles)
+- Object pack URL did not resolve this session (404s on guessed slugs). Do not inherit CC0 onto an unresolved product page.
+- Town comment from the author: some textures are modified/resized from the old public-domain Golgotha collection. Author still ships them as CC0.
+- Magenta/teal/black key colors per pack. True 2:1 iso; `camera_perspective` is `isometric_3_4` for catalog filter grouping with other iso 2D, not a claim that these are 3/4 painted sprites.
+- Tiled `.tsx` sheets ship in several packs; fix image paths after unzip.
+
+## Evidence
+
+- Live itch profile (2026-08-29): "All assets have been released under the Public Domain (CC0) license."
+- Live Town pack (2026-08-29): Asset license "Creative Commons Zero v1.0 Universal"
+- Live Floor pack (2026-08-29): Asset license "Creative Commons Zero v1.0 Universal"
+- Live Wall pack (2026-08-29): Asset license "Creative Commons Zero v1.0 Universal"
+- Live Overworld pack (2026-08-29): Asset license "Creative Commons Zero v1.0 Universal"
+
+## Related
+
+- [ninja-adventure](ninja-adventure.md)
+- [ox72-dungeontileset-ii](ox72-dungeontileset-ii.md)
+- [kenney-tiny-dungeon](kenney-tiny-dungeon.md)

catalog/README.md

@@ -6,13 +6,13 @@ One markdown file per source under a category folder. Copy [`TEMPLATE.md`](TEMPL
 | --- | ---: | --- | --- |
 | 3D | 65 | [`3d/`](3d/) | Models, scans, PBR textures |
 | Tools | 62 | [`tools/`](tools/) | Editors, pipeline, TTS, Godot add-ons |
-| 2D | 37 | [`2d/`](2d/) | Sprites, UI, icons, palettes |
-| Audio | 25 | [`audio/`](audio/) | SFX, music, foley, IRs |
-| Characters | 21 | [`characters/`](characters/) | Generators & modular humanoids |
-| Fonts | 17 | [`fonts/`](fonts/) | OFL / commercial-ok type |
-| Environment | 14 | [`environment/`](environment/) | HDRI, terrain, geodata |
-| Shaders & VFX | 13 | [`shaders-vfx/`](shaders-vfx/) | Shaders, particle textures, FX |
-| Animation | 11 | [`animation/`](animation/) | MoCap, character clips |
+| 2D | 39 | [`2d/`](2d/) | Sprites, UI, icons, palettes |
+| Audio | 26 | [`audio/`](audio/) | SFX, music, foley, IRs |
+| Characters | 23 | [`characters/`](characters/) | Generators & modular humanoids |
+| Fonts | 18 | [`fonts/`](fonts/) | OFL / commercial-ok type |
+| Environment | 15 | [`environment/`](environment/) | HDRI, terrain, geodata |
+| Shaders & VFX | 14 | [`shaders-vfx/`](shaders-vfx/) | Shaders, particle textures, FX |
+| Animation | 12 | [`animation/`](animation/) | MoCap, character clips |
 
 Guides: [`docs/licenses.md`](../docs/licenses.md) · [`docs/provenance.md`](../docs/provenance.md) · [`docs/high-risk.md`](../docs/high-risk.md) · [`docs/fivem.md`](../docs/fivem.md) · [`docs/ai-assets.md`](../docs/ai-assets.md) · [`docs/trust-score.md`](../docs/trust-score.md) · [`docs/game-vs-video-licensing.md`](../docs/game-vs-video-licensing.md) · [`docs/godot-budget-stack.md`](../docs/godot-budget-stack.md) · [`docs/research-index.md`](../docs/research-index.md)
 

catalog/animation/README.md

@@ -3,6 +3,7 @@
 | ID | Name | License | Commercial | Status |
 | --- | --- | --- | --- | --- |
 | [cmu-mocap](cmu-mocap.md) | CMU MoCap Database | custom | yes | active |
+| [truebones-zoo](truebones-zoo.md) | Truebones ZOO | custom | yes | needs-review |
 | [accad-mocap](accad-mocap.md) | ACCAD Open Motion | CC-BY-3.0 | yes | active |
 | [kaykit-character-animations](kaykit-character-animations.md) | KayKit Character Animations | CC0 | yes | active |
 | [quaternius-universal-animation-library](quaternius-universal-animation-library.md) | Quaternius UAL | CC0 | yes | active |
@@ -17,4 +18,4 @@
 \* Standard License caps (~1M users / $1M revenue); AI training needs AI Permit.  
 \* Rokoko Vision: free Starter quotas; generated motion commercial per Create FAQ.
 
-Avoid **LaFAN1** (NC-ND), **SFU MoCap** (research-only), **AMASS** (non-commercial + SMPL), and **Human3.6M** (academic-only) — [`docs/high-risk.md`](../../docs/high-risk.md).
+Avoid **LaFAN1** (NC-ND), **SFU MoCap** (research-only), **AMASS** (non-commercial + SMPL), **Human3.6M** (academic-only), and the **Truebones Mixamo 2400 dump** (Mixamo repack, not the ZOO SKU) — [`docs/high-risk.md`](../../docs/high-risk.md).