UniView - Game Asset Viewer

Browse the 3D models, maps, textures, sprites, sounds, animations and text inside Unity, Source, Source 2, Unreal and Fallout 1/2 games, including games that have shut down and can't be played anymore. Any other game's loose files open too, and new engines can be added with plugins.

Unzip it and run UniView.exe. You don't need Python.

Download · Screenshots · Engines · Features · How to use · Plugins · Compatibility · Build · FAQ

---

At a glance

What it opens	Unity, Source, Source 2, Unreal and Fallout 1/2 game folders; loose files and zip archives of any game; any engine that has a plugin
What it shows	Models and maps (3D), textures, sprites, sounds (built-in player), animations (played on their models), text files; everything else can be exported as-is
What it exports	Models as .obj + .mtl + .png or a single .glb (both open textured in Blender), textures as .png, sounds as .wav/.mp3/.ogg, animations as JSON keyframes, text as-is
Game files	Read only. UniView never changes anything
Tested with	Robocraft, Muck, Valheim (Unity) · Team Fortress 2, Portal (Source) · CS2, Deadlock (Source 2) · Satisfactory, Headliners, Dead as Disco (Unreal) · Fallout 1 & 2 · Project Zomboid, Serious Sam 2 (loose files)
Built with	UnityPy · PySide6 · PyVista

Download

1. Go to the latest release.
2. Download UniView-vX.Y.Z-win64.zip.
3. Unzip it anywhere and run UniView.exe.

Windows SmartScreen may warn you the first time because the exe isn't code-signed. Click More info → Run anyway.

Screenshots

Projects page: one box per game. Green means loaded, red means not loaded, and each box shows its file count. The console at the bottom shows what the app is doing.

Game view: the asset list with thumbnails on the left, the 3D model in the middle, and model info plus materials/textures on the right.

Supported engines

Each game is read by an engine plugin. UniView picks the plugin automatically. To choose one yourself, right-click a game and use Read with engine.

Engine	Games (examples)	Models	Textures	Sound	Other
Unity	Valheim, Muck, Among Us, Robocraft	✔ with materials	✔ + sprites	✔ AudioClips	✔ text; animations play on their skinned models, export as JSON
Source	TF2, HL2, Portal, CS:S, L4D2, GMod	✔ .mdl with .vmt materials; ✔ maps (.bsp) with terrain and static props	✔ .vtf	✔ wav/mp3	✔ text
Source 2	CS2, Dota 2, Deadlock, HL: Alyx	✔ .vmdl_c with materials	✔ .vtex_c	✔ .vsnd_c	✔ text
Unreal 4/5	Satisfactory, Dead as Disco, Headliners	✔ static + skeletal meshes, textures found through their materials	✔ incl. virtual textures	✔ Ogg/WAV SoundWaves, Wwise .wem, FMOD .bank* (not Bink Audio yet)	✔ ini/json/csv...; raw export of the rest
Fallout 1/2	Fallout, Fallout 2	–	✔ FRM sprites (whole animation strip), RIX images	✔ ACM*	✔ MSG text
Loose files & archives	any other game (Project Zomboid, Serious Sam 2...)	✔ .obj, DirectX .x	✔ png/jpg/tga/dds/bmp...	✔ wav/mp3/ogg, plus anything vgmstream* plays	✔ text; files inside .zip/.gro/.pk3 archives

* Needs the free vgmstream decoder: Help → Install sound decoder (vgmstream) downloads it once (from its official GitHub releases) into tools/ next to UniView.

• Textures per part: models with several materials show each part with its own texture.
• Maps: Source .bsp maps show the whole level with textures, terrain (displacements) and all static props; the 3D skybox is left out.
• Sounds play in a built-in player (play/pause, seek, volume, autoplay) and save as .wav/.mp3/.ogg.
• Animations (Unity): each clip lists the bones it moves; pick a model with a matching skeleton and press Play on model to watch it (play/pause and a time slider), or save the keyframes as JSON. Humanoid (muscle) clips can't be played yet.

Unreal notes:

• Both .pak files and IoStore containers (.utoc/.ucas) are read. Packages are sorted into models, textures and other files by the class stored in their headers. The first time a game opens, this takes a few seconds; the result is cached in cache/.
• Encrypted games need the game's AES key: right-click the game → Engine settings (Unreal)... and paste it (one per line if there are several). Without it, UniView tells you which containers were skipped.
• Oodle-compressed files work if an oo2core_*_win64.dll is found. Many games ship one, and UniView looks in the game's folder, next to UniView.exe and in your Steam libraries.
• Models and textures are found by their data layout instead of the game's property schema, so no .usmap mappings file is needed. Nanite-only meshes and UE3 games (.upk) aren't supported.

Features

Finding things

• Search with filters: type a name, or add filters like tris>1000, size>1mb, w>=512 or type:mesh. Combine them, e.g. gun tris>2000 size<5mb.
• Sortable columns: click Name, Info (triangles or pixel size) or Size to sort. Every asset is measured in the background.
• Favorites: press Ctrl+D (or right-click) to star the good stuff, then pick ★ Favorites in the type box to see only those. Favorites are saved per game.
• Grid view: big thumbnails you can flip through with the arrow keys (View → Grid, or Ctrl+2).
• Jump between related assets: double-click a model's texture to jump to it. A texture lists every model that uses it (click one to jump back), and a sprite links to its sprite sheet.

Model viewer

• Rotate, and zoom with the mouse wheel or +/−. Wireframe, edges, vertex colors and texture alpha can each be toggled on and off. The model's texture is found automatically.
• UV sets: switch between UV0/UV1/... (UV1 is often the baked-lighting layout), and use UV layout to see the UVs drawn over the texture.
• Model panel: vertex/triangle counts, the source file, the prefab path, what uses the model, and its materials and textures.
• Animation playback: play Unity animation clips on their skinned models.
• Texture viewer: zoom under the mouse, drag to pan, with a checkerboard background for transparency.

Export

• OBJ + MTL + PNG or GLB (one file with the textures inside).
• Open in Blender (Ctrl+B): exports the model and opens it in Blender in one click. Blender is found automatically, or you can point to it.
• Bulk export of all models, all textures, everything shown in the list, or a selection. It can keep the game's folder structure (e.g. assets/prefabs/weapons/...) so big dumps stay easy to browse.

Projects page

• A box for each game. Green means its assets are already loaded; red means they aren't loaded yet. Each box shows file/asset counts and how well the game works with UniView.
• Drag and drop a game folder onto the page to add it, or use Find games in Steam, which lists every game an engine plugin recognizes.
• Engine and version: each box shows the engine and what UniView can tell about it without loading the game, e.g. Unity 2019.4.40f1 · IL2CPP, Source · tf, hl2, UE 4.26-5.2 · pak v11 · Oodle.
• Catalog your library: tag games (right-click → Tags..., e.g. lowpoly, fps, dead game), then search, filter by tag, group by tag / engine / engine version / compatibility / loaded, and sort by name, engine version or asset count. The search box takes filters like tag:lowpoly engine:unity version:2019 il2cpp.
• Pin favorite games to the top. The most recently opened games come next.
• Notes for each game (right-click → Notes, or the Notes button in the viewer) for quirks and where the good stuff is.
• Progress bar while a game loads, plus a console, viewer.log and crash.log.

How to use

1. Start UniView. The Projects page opens.
2. Click Find games in Steam, or ＋ Add game and pick a game's install folder (e.g. ...\steamapps\common\Robocraft).
3. Click a game's box to load it.
4. Pick an asset in the list on the left:
   • Model: rotate it in 3D and check its textures in the right-hand panel. Save model + textures exports it.
   • Texture: zoom and pan it. Save PNG exports it.
   • Sound: press Play (or turn on Autoplay). Save sound... exports it.
   • Animation: pick a model and press Play on model.
5. Search, sort and star assets (Ctrl+D). Switch to the grid (Ctrl+2) to flip through thumbnails. Right-click assets for more options. Use File → Export … for bulk export.
6. ← Projects takes you back. Right-click a game's box to rename it, unload it from memory, or remove it.

Engine plugins

Is there a game UniView can't read? You can teach it a new engine without touching UniView's code:

1. Copy plugins/_template.py (next to UniView.exe) to plugins/my_engine.py.
2. Fill in how to recognize the game's folder and how to read its models and textures.
3. Restart UniView. Help → Engine plugins shows what loaded.

The template is already a working "loose files" plugin (images, text and .obj models), so you can start from something that runs. PLUGINS.md explains the API: assets, mesh conventions, materials and the helpers for Valve VPK and Unreal pak archives. A plugin with the same id as a built-in one replaces it, so you can also fix or extend the built-in engines. Pull requests for new engines are welcome.

Run from source

Needs Python 3.10+ on Windows.

py -m pip install -r requirements.txt
run.bat

Or open a game folder directly: py unity_viewer.py "D:\SteamLibrary\steamapps\common\Robocraft"

Build

build.bat

This creates:

• Builds\GitHub: a clean copy of the source (this repo)
• Builds\Release\UniView-vX.Y.Z\: a standalone app (no Python needed), plus a .zip of it for a GitHub release

The packaged exe is automatically self-tested after building. To also test it against a real game: build.bat release --test-game "D:\SteamLibrary\steamapps\common\Robocraft"

The version number is __version__ at the top of unity_viewer.py.

FAQ

A model shows no texture. Not every model can be traced back to a material. Right-click any texture in the list and choose Apply as texture to current model.

A model looks see-through or odd. Leave Texture alpha off. Many games store other data in the alpha channel. If the texture is upside down, try Flip texture V.

Something crashed or didn't load. Check the Console, or open crash.log / viewer.log next to UniView.exe. Please attach them when you open an issue.

Why GLB and not FBX? Blender can't import text-format FBX, and there's no simple Python writer for binary FBX. GLB (glTF) opens directly in Blender, Godot, Unity and most other tools, keeps the textures inside, and has room for bones and animation later.

Does it use a lot of memory? Loaded games stay in memory so they reopen instantly. Right-click a game → Unload from memory to free it.

Game compatibility list

compat.json is a community list of how well UniView works with each game (works, partial or broken, plus notes and the Unity version it was built with). UniView downloads the latest version at startup and shows it on each game's box. You can turn this off under Help.

To add or update a game, right-click it in UniView → Report compatibility.... That opens a GitHub issue already filled in with the game's details. You can also send a pull request that edits compat.json. The key is the game's install folder name (e.g. steamapps/common/Robocraft → "Robocraft").

Notes

• Extracted assets are still owned by the game's creators. Viewing them for personal use is fine, but check before sharing them.