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Walkable demo

Medieval castle courtyard

Walk a 44 by 40 metre castle bailey built from the Medieval Castle Construction pack: curtain walls and round corner towers, a gatehouse, a three-storey keep, cobbled yard with a well, forge, stables, market tables and an archery range.

About

One walled courtyard from 24 of the pack's 149 models, on plain grass in the outdoor preset with warm low sun and long shadows.

You enter under the gatehouse between two banner poles. The walls are 4 m curtain-straight segments on three sides with the gatehouse and short curtains on the front, and a round tower on every corner built from three stacked pieces: base, chamber and battlement. The keep at the back is the same idea: ground floor, upper floor at 3 m and battlement at 6 m. Cobble tiles pave the centre of the yard round the well. Stables, a hay rack and a woodpile take the west side; the forge hearth, anvil, water barrels and bread oven the east. A market awning covers a trestle table, two more tables with benches stand across the yard, and an archery range with two targets and two training pells fills the south-west corner.

Nothing moves: this pack ships without animation clips, so the gate and the well are static. Interiors, the wall walk and the siege engines in the pack are yours to add.

Every piece here is a published model from the pack, placed by hand. Walk with the keys or touch, and approach a piece to see it move if it has animation. Colliders, navigation and gameplay are yours to add.

Points of interest

Use with an AI agent

Copy this prompt into your AI chat to rebuild the layout, then describe what to change.

Rebuild the "Medieval castle courtyard" demo scene from the Medieval Castle Construction pack in my project.

Layout (JSON, every placement with its CDN URL): https://3dassets.dev/api/v1/demos/medieval-castle-construction
Pack manifest: https://3dassets.dev/api/v1/packs/medieval-castle-construction
Demo page: https://3dassets.dev/demos/medieval-castle-construction

- 108 placements of 23 models; units are metres, +Y up, rotation is yaw in degrees about +Y
- Spawn at (0, 0, 14.5) facing 180 degrees; eye height 1.6 m
- Licence: CC0 1.0 Universal (no attribution required)
- Loading: three.js GLTFLoader, one load per distinct model, cloned per placement; no decoders required

Also available as JSON or Markdown, and via the MCP server.

Common questions

How do I use Medieval castle courtyard with my AI development tools?
Press "Copy for AI agent" above and paste the prompt into Claude Code, Cursor, Codex, GitHub Copilot, ChatGPT or any other coding assistant. The prompt carries the direct CDN URL, the real-world size, the licence and the loading notes, so the assistant can fetch the scene and place it in your project without you writing the loader yourself. For a permanent connection, add the 3DAssets.dev MCP server to your tool with one command (for Claude Code: claude mcp add --transport http 3dassets https://3dassets.dev/mcp) and the assistant can then search the whole catalogue, fetch files and read the usage snippets on its own.

MCP server setupGuide for AI agents

How do I get started?
Walk the scene here with the keys or touch to see how the pack fits together. To build it yourself, download the pack with the button, then copy the "Copy for AI agent" prompt: it links the layout JSON, which lists every placement with its position, rotation and CDN URL, so an assistant connected to the MCP server can rebuild the scene in your engine and change it to order.

MCP server setup

Which game engines and tools can I use Medieval castle courtyard with?
Anything that reads glTF, which today means all of the major ones: three.js and React Three Fiber on the web, Godot 4, Unity, Unreal Engine 5, Blender and the model-viewer web component. Every model in the scene is a self-contained binary glTF (.glb) with textures embedded, so each is one file to import and no plugin, converter or decoder to install first.
How do I import this scene into Unity, Godot, Unreal or Blender?
Unity: install the glTFast package (com.unity.cloud.gltfast) from the Package Manager, drop the .glb into Assets and drag the prefab in, or load it at runtime from the CDN URL. Godot 4: copy the file into the project folder and the editor imports it as a scene you can instantiate. Unreal Engine 5: File > Import with the built-in glTF importer, which converts the axes for you. Blender: File > Import > glTF 2.0. Units are metres with +Y up in the file, and every importer above handles the conversion to its own axes automatically.
Can I use Medieval castle courtyard in a commercial game, and do I need to credit anyone?
Yes to commercial use and no to credit. Every scene on 3DAssets.dev is released under CC0 1.0 Universal, which places it in the public domain: use it in a paid game, an app, a film or a client project, modify it, redistribute it, and put nothing in the credits. A link back is welcome but it is entirely your choice.

CC0 licence text

Can I load it from the CDN instead of downloading it?
Yes. The pack behind it has a permanent URL on cdn.3dassets.dev that is CORS-enabled and never changes content, so you can pass it straight to GLTFLoader, glTFast or model-viewer in production and cache it as hard as you like. Downloading is only needed for engines that import from disk.
Is the demo itself a file I can download?
No, and it does not need to be. A demo is a layout of the pack's published models composed in your browser from the CDN, so there is no extra file to fetch. Download the pack for the models, and take the layout JSON linked above for the placements: together they are the whole scene, and an AI agent can rebuild it from those two links.
Can I change the scene, or add gameplay to it?
Yes. The layout is plain data in metres, so move, add or remove placements freely in your own engine. Colliders, navigation and gameplay are yours to add: the demo shows what the pack looks like assembled, and your game decides how it plays.

Models in this demo

Curtain Straight 4 m (Medieval Castle Construction)

Curtain Straight 4 m (Medieval Castle Construction)

4 m curtain wall with 4 m deck and 1.5 m clear wall-walk.

@3dassets264 tris · 8 ↓
Gatehouse (Medieval Castle Construction)

Gatehouse (Medieval Castle Construction)

Twin square towers flank a 2 m arched gate tunnel.

@3dassets1.2k tris · 10 ↓
Round Tower Base (Medieval Castle Construction)

Round Tower Base (Medieval Castle Construction)

round tower base. Solid structural plinth; no interior.

@3dassets64 tris · 10 ↓
Round Tower Chamber (Medieval Castle Construction)

Round Tower Chamber (Medieval Castle Construction)

round tower chamber. Open-topped chamber.

@3dassets396 tris · 11 ↓
Round Tower Battlement (Medieval Castle Construction)

Round Tower Battlement (Medieval Castle Construction)

round tower battlement. Walkable cap with crenellated perimeter.

@3dassets288 tris · 10 ↓
Keep Ground Floor (Medieval Castle Construction)

Keep Ground Floor (Medieval Castle Construction)

6 m square open keep shell with a 2 m wide entrance.

@3dassets792 tris · 7 ↓
Keep Upper Floor (Medieval Castle Construction)

Keep Upper Floor (Medieval Castle Construction)

6 m keep upper shell with narrow arched window.

@3dassets792 tris · 9 ↓
Keep Battlement (Medieval Castle Construction)

Keep Battlement (Medieval Castle Construction)

6 m keep roof terrace and crenellated enclosure.

@3dassets348 tris · 8 ↓
Cobble Tile (Medieval Castle Construction)

Cobble Tile (Medieval Castle Construction)

2 m square courtyard paving tile with twenty-five raised cobbles.

@3dassets312 tris · 11 ↓
Well (Medieval Castle Construction)

Well (Medieval Castle Construction)

Roofed masonry well with real open centre and windlass axle.

@3dassets248 tris · 8 ↓
Stable Stall (Medieval Castle Construction)

Stable Stall (Medieval Castle Construction)

Covered 3 m stable stall with a fully open front.

@3dassets140 tris · 9 ↓
Hay Rack (Medieval Castle Construction)

Hay Rack (Medieval Castle Construction)

Slatted fodder rack with straw load and splayed rails.

@3dassets168 tris · 8 ↓
Woodpile (Medieval Castle Construction)

Woodpile (Medieval Castle Construction)

Nine stacked squared firewood logs in three stable tiers.

@3dassets108 tris · 7 ↓
Forge Hearth (Medieval Castle Construction)

Forge Hearth (Medieval Castle Construction)

Stone smithing hearth with shallow fire bed and chimney; unlit.

@3dassets84 tris · 8 ↓
Anvil Stump (Medieval Castle Construction)

Anvil Stump (Medieval Castle Construction)

Horned iron anvil mounted on an octagonal stump.

@3dassets76 tris · 6 ↓
Water Barrel (Medieval Castle Construction)

Water Barrel (Medieval Castle Construction)

Closed oak water barrel with iron hoops.

@3dassets336 tris · 8 ↓
Bread Oven (Medieval Castle Construction)

Bread Oven (Medieval Castle Construction)

Small masonry baking oven with recessed arched mouth and chimney.

@3dassets728 tris · 9 ↓
Market Awning (Medieval Castle Construction)

Market Awning (Medieval Castle Construction)

Blue cloth market canopy on four timber posts.

@3dassets68 tris · 8 ↓
Trestle Table (Medieval Castle Construction)

Trestle Table (Medieval Castle Construction)

Long oak tabletop on two broad trestles and stretcher.

@3dassets72 tris · 8 ↓
Long Bench (Medieval Castle Construction)

Long Bench (Medieval Castle Construction)

Backless plank bench with two trestles.

@3dassets72 tris · 9 ↓
Archery Target (Medieval Castle Construction)

Archery Target (Medieval Castle Construction)

Concentric straw archery target on a braced tripod.

@3dassets212 tris · 8 ↓
Training Pell (Medieval Castle Construction)

Training Pell (Medieval Castle Construction)

Padded striking post with cross-arm and stable wooden foot.

@3dassets120 tris · 8 ↓
Banner Pole (Medieval Castle Construction)

Banner Pole (Medieval Castle Construction)

Freestanding blue banner on a weighted pole.

@3dassets116 tris · 9 ↓