Low poly 3D models: modular building kit generator

Four kits, one per theme, as the generator made them

Each card is a kit we generated on 2026-10-27 with the default settings of its theme: the same code that runs in the maker above and builds the paid download. The picture is the preview model, all pieces merged on a plinth, and the button turns it in 3D. The kits have 468 to 468 triangles in total.

Medieval

Palette stone, cell 8 studs, walls 2 cells long, 5 steps. 468 triangles in all.

Sci-fi

Palette neon, cell 8 studs, walls 2 cells long, 5 steps. 468 triangles in all.

Cartoon town

Palette candy, cell 8 studs, walls 2 cells long, 5 steps. 468 triangles in all.

Dungeon

Palette ember, cell 8 studs, walls 2 cells long, 5 steps. 468 triangles in all.

What every piece costs in triangles

These are the real counts of the medieval sample kit with 5 steps. Themes change colours, the roof pitch and the wall thickness, not the triangle count.

Piece	Triangles	What it is
Floor tile	24	A square tile one cell wide with a raised inlay
Wall	24	One cell high, one to three cells long, with a plinth
Wall with window	68	A wall with a framed opening, a sill and a cross bar
Wall with door	40	A wall with a doorway to the floor and a lintel
Stairs	44	One cell square and one cell high, climbing along z
Fence	48	Two posts and two rails, one cell long
Crate	60	Half a cell on each side, with corner boards
Barrel	76	Eight sides, a belly and two metal hoops
Pillar	64	Eight-sided shaft with a base and a two-part cap
Roof	20	A gable roof over a wall run, resting on y 0

How low poly 3D models are made from a modular kit

A low poly 3D model keeps the shape and drops the detail: flat faces, few triangles, colour from a small palette instead of a painted texture. That keeps a scene light and gives a clear look. Building a whole town from hand-made low poly models means fitting every piece by eye. A modular kit removes the fitting: every piece is cut to a grid, so a wall, a door and a corner meet with no gap when you place them on multiples of the cell size.

Choose a theme and a palette. Medieval, sci-fi, cartoon town or dungeon sets the default colours, the thickness of the walls and the pitch of the roof. You can then pick any of the six palettes.
Set the grid. Pick studs or meters, a cell size, the length of a wall in cells, and the number of steps in the stairs.
Pick the pieces. Leave out what you do not need. The triangle count of every piece is shown beside its name.
Turn it, then download. The preview is built in your browser. The download builds the same pieces again as separate files with their own pivots.

Low poly models: the grid and the pivot

Every piece stands on y 0 with its pivot at the centre of its base. A wall is one cell high and sits on the edge of a cell, so two walls placed one cell apart share an edge and a wall run needs no corner fix. Floors and stairs are one cell square. Because the pivot is always the base centre, rotating a wall by 90 degrees turns it in place.

Low poly 3D model, one palette texture

The colours come from one texture of eight pixels. Every face points its UV at one of those pixels, so the model needs no painted texture, and changing the look of the whole kit means changing eight pixels. The same texture is in the FBX and OBJ files, so the colours match in every format.

What is in the download

File	What it is	Use it for
kit.glb	All pieces laid out in rows, one named node per piece	Seeing the whole kit at once, Godot scenes
pieces/*.glb	One GLB per piece, pivot at the base centre	Placing single pieces in a scene
fbx/*.fbx	One FBX per piece with the palette texture	Roblox Studio and Unity
obj/.obj, .mtl, palette.png	One OBJ and material per piece, one shared texture	Blender and most other tools
stl/*.stl	One binary STL per piece, no colour	3D printing and collision meshes
kit.json, README.txt	Triangle counts, sizes, file names and the grid rules	Scripts that place the pieces

The ZIP is an asset kit, not a finished game: it has models and a manifest, no scripts and no engine project. If the same game needs a thumbnail or a game icon, the Roblox thumbnail maker and the Roblox icon maker make them, and the Roblox GUI generator makes the interface.

Using the pieces in Roblox Studio, Unity and Godot

Importers differ between engine versions, so bring in one piece first and check its scale before the whole kit. Choose the unit before you build: studs for Roblox, meters for most other engines.

Roblox Studio

With the studs unit, one file unit is one stud. Import the FBX or OBJ with the importer's Scale Unit left on Studs, and a wall set to a cell of 8 studs comes in 8 studs high. Place pieces on multiples of the cell size and they line up.

Unity and Godot

Unity reads the FBX files directly. Godot reads the GLB files and shows them as scenes with one palette material. With the meters unit, one unit is one meter in both. A pivot at the base centre means a piece placed at y 0 stands on the ground.

Low poly props, buildings and characters

Low poly props

The crate, the barrel, the fence and the pillar are low poly props you can scatter through a scene. At 48 to 76 triangles each they are far under the 3,000 triangles we allow a single prop, so a whole village of them stays cheap to draw.

Low poly building and modular building kit

Walls, a door, a window, stairs, a floor and a roof make a low poly building with nothing else: floors on the grid, walls on the cell edges, a roof over a wall run. As a modular building kit it is small on purpose, ten pieces that cover the shell of a house, a tower or a corridor.

Low poly character models

A character is not a grid, so it does not come from this kit. For low poly character models, and for single props such as a chest or a sword, use the 3D props in the home page gallery: you describe the model, and it comes back as a GLB with the real triangle count shown. For a 2D character, the sprite sheet generator makes animated sprite sheets.

How we checked it on 2026-10-27

The kit is generated by code, not drawn by a model, so we can check it the way code is checked. On 2026-10-27 our tests built every piece at every step count from 3 to 8 and checked these things:

Each piece has the triangle count in the table above, and the whole kit stays under 600 triangles.
The lowest point of every piece is y 0 and its footprint is centred on x and z, so the pivot is the base centre.
Walls are exactly the wall length by one cell, and floors and stairs are exactly one cell square, for every unit and cell size.
Every face points outward, no triangle is flat, and every normal has length one.
The same settings give the same bytes in every file except the FBX, which carries a creation time.

We have not yet opened the files in every engine. What we checked is the geometry and the file structure, and that the FBX and OBJ carry the palette texture.

When it does not fit

There are ten pieces. There is no corner piece, no curved wall and no second floor: you build those from the pieces you have.
It is flat colour. There are no painted textures, no normal maps and no rigging.
The pieces have no inside. A wall is a thin slab, and the interior of a room is your floor and your walls.
Theme changes colour, wall thickness and roof pitch, not the shape of the pieces.
The STL files are for printing and collision. They carry no colour, and thin walls may be too thin to print at a small cell size.

What the kit costs

The preview costs nothing and stays in your browser, so you can change everything and read every triangle count first. The download is 80 credits, about $0.40 to $0.80 depending on the pack you buy, and your first kit is half price, 40 credits. The price is on the button before you press it. If your balance is short, or you have not bought credits yet, a window on this page offers one credit pack, and the download starts by itself once you have paid. See the pricing page for every pack. Credits never expire.

Low poly 3D models questions

What is a modular low poly building kit?

A modular building kit is a small set of pieces that are cut to a grid, so they fit together with no gaps and no hand fitting. This one has 10 pieces: a floor tile, a wall, a wall with a window, a wall with a door, stairs, a fence, a crate, a barrel, a pillar and a roof. Walls are one grid cell high and one to three cells long, and they stand on the edge of a cell, so you place them on multiples of the cell size and they meet. Every piece has its pivot at the centre of its base, which makes placing and rotating predictable in any engine.

Which file formats do I get?

You download one ZIP. It holds a GLB of the whole kit laid out in rows, and a GLB, an FBX and an OBJ for every piece, with one shared palette texture, so the colours match in every format. Each piece is also written as a binary STL, which has no colour but suits 3D printing and collision meshes. A kit.json file lists the triangle count, the size and the file names of every piece, and a short README repeats the grid rules. The preview you see on this page is one merged model on a plinth, made only for looking at; the pieces with their own pivots are in the download.

How do I import the pieces into Roblox Studio, Unity or Godot?

For Roblox, choose the studs unit when you make the kit: one file unit is then one stud, so keep the Scale Unit of the Studio importer on Studs and the pieces come in at the size you set. In Unity, drop the FBX files into the project. In Godot, drop the GLB files in and they import as scenes with the palette material. For meters, choose the meters unit and one unit is one meter. Importers differ between engine versions, so check your first piece, then place the rest on multiples of the cell size.

How many triangles do the low poly models have?

Very few, by design. A wall is 24 triangles, a wall with a window 68, a wall with a door 40, a crate 60 and a barrel 76, and stairs cost 8 triangles per step plus 4. The sample kits on this page come to between 468 and 468 triangles in total for all 10 pieces. That is far under the 3,000 triangles we allow a single prop, so you can place hundreds of pieces. The exact count of every piece is shown next to its name in the maker before you pay, and again in kit.json in the download.

Can it make low poly character models?

No. This tool makes buildings and props from fixed pieces on a grid, and a character is not a grid. For a low poly character model, or any other single low poly prop, use the 3D prop flow in the home page gallery: you describe the model, we draw it and turn it into a GLB with the real triangle count shown, kept under 3,000 triangles for a prop. It is a different process with a different price, and the result is one model, not a kit. If you need a character that moves, the sprite sheet generator makes 2D animated characters instead.

What does the low poly kit cost?

You pay only for the download: the preview is built in your browser, you can turn it, change the theme, the palette, the grid and the pieces, and read every triangle count before you pay. The download costs 80 credits, which is about $0.40 to $0.80 depending on the pack you buy, and your first kit is half price, 40 credits. If you do not have enough credits when you press the button, a window opens on this page with a credit pack, and the download starts by itself after you pay. Credits never expire and there is no subscription.

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Low poly 3D models, made from a modular kit