Sheet 01Title · general arrangement

Low-poly 3D modeling software for Windows.

Nubble is a small, fast 3D modeling app for making low-poly game assets. Mesh editing, modifiers, PBR materials and export to glTF, GLB, OBJ, PLY and STL, in one window. No installer.

Download for Windows See the features
The Nubble application interface

Object mode A textured character open in the viewport, two objects, 952 triangles.

Fig. 1 · Nubble 0.1.0, the full window at work.

Product
Nubble
Platform
Windows 10 / 11, 64-bit
Version
0.1.0
Release
Coming soon
State
In development

Sheet 02General notes

Why use Nubble

Large 3D suites serve film, engineering and simulation at once, and carry the complexity that requires. Nubble does one job: low-poly modeling for game assets.

  1. Easy to learn

    One window, seven panels and a short list of shortcuts. Add a cube, cut a loop and extrude a face within a minute of opening it.

  2. Focused modeling tools

    The operators a low-poly asset needs, and nothing else. No animation, no sculpting, no node graphs.

  3. Fast and lightweight

    A single native executable. No installer, no runtime to download, and it opens straight into an empty scene.

Sheet 03Features

3D modeling features

Everything below is in the current development build. What is not built yet is listed further down and marked as such. The images are captured from the Nubble viewport.

A low-poly game character standing on the grid in the Nubble viewport
Mesh editing Character · 952 tris

Edit vertices, edges and faces

Tab into edit mode and work on vertices, edges or faces. The three modes stay in agreement, so selecting every corner of a face selects the face too.

  • Vertex, edge and face selection modes
  • Edge loops, rings and linked selection
  • Box, circle and lasso selection
  • Grow and shrink the current selection
Tab 1 / 2 / 3 Alt + click B / C / Q
A low-poly cooking pot hanging over a campfire in the Nubble viewport
Operators Prop · 3117 tris

Extrude, inset, bevel and loop cut

Each operator runs once. Adjust the numbers in Adjust Last Operation and it re-runs rather than stacking a second one. When one cannot apply, it says why and changes nothing.

  • Extrude faces, edges and vertices
  • Inset, bevel, loop cut, fill and rip
  • Adjust Last Operation re-runs with new values
  • Every operator is a single undo step
E I Ctrl + B Ctrl + R
A kit of signboards laid out flat in an orthographic front view, with the axis gizmo at the corner
Transforms Asset kit · 18858 tris

Move, rotate and scale with precision

Modal transforms follow the mouse, constrain to an axis or plane, snap to increments and accept a typed value. Escape cancels exactly, leaving the mesh as it was.

  • Axis and plane constraints
  • Typed exact values mid-transform
  • Snapping and fine mode
  • An object-mode gizmo for translate, rotate and scale
G R S X / Y / Z
A textured low-poly street scene of shopfronts, crates and fencing in the Nubble viewport
Materials and shading Environment · 2107 tris

Preview PBR materials in the viewport

A physically based material with base color, metallic, roughness, emission and a clearcoat layer, previewed live. Flat or smooth shading, plus a subdivision modifier when a surface needs rounding off.

  • Base color, metallic, roughness and emission
  • Opaque, clip and blend alpha modes
  • Flat and smooth shading
  • Mirror, subdivision, solidify, weld and decimate modifiers
Properties Modifiers

Sheet 04Schedule of parts

What works today, and what does not

Nubble is unreleased software. Nothing is listed as finished before it is.
Part Description State
Object and component selection Select whole objects, or the vertices, edges and faces inside one. Drawn
Primitives Plane, grid, cube, circle, spheres, cylinder, cone and torus, each with parameters. Drawn
Scene hierarchy An outliner tree with drag-to-parent, and transforms that compose through it. Drawn
Import and export Reads OBJ, glTF, GLB, FBX, PLY, STL and more; writes OBJ, PLY, STL, glTF and GLB. Drawn
Project files A single .nubble project holding meshes, materials, textures and editor state. Drawn
UV editing Seams, unwrapping and packing in a dedicated UV editor. In progress
Texture painting Painting straight onto the model, with brushes and palettes. Not drawn
Keyboard shortcut reference A searchable, printable list of every binding in the application. Not drawn

Sheet 05Interface · panel arrangement

The Nubble interface

Seven dockable panels, a menu bar and a toolbar. The layout is saved per user, so the window you arrange is the one you come back to.

The Nubble application interface

Toolbar Select, Move, Rotate and Scale, then Extrude, Inset, Bevel, Loop and Subdiv.

3D viewport Shading mode, overlays, and the object and triangle counts in its header.

Docked panels UV editor, statistics, animation and log, docked under the viewport.

Outliner Every object in the scene as a tree, each row with its own visibility switch.

Properties The active object's transform, material and modifiers, with a Rig tab beside it.

Textures The texture library: create, load, save and delete.

Sheet 06Intended use

Who Nubble is for

Nubble is not a replacement for a full 3D suite. It is for making game-ready assets quickly, without learning a large application first.

01

Indie game developers

Model a prop, export a GLB and get back to the game.

02

Beginner 3D artists

A smaller set of tools to learn, each doing one clear thing.

03

Hobbyists

Build something in an evening without relearning the tool first.

04

Students

Small enough that the modeling concepts stay visible behind it.

05

Low-poly creators

Built for faceted, game-ready meshes rather than dense sculpts.

06

Anyone new to 3D software

Fewer panels and fewer menus than a full modeling suite.

Sheet 07Screenshots

Characters, props, environments and asset kits open in Nubble. Select a screenshot to see it full size.

Screenshots of Nubble 0.1.0. The models were made elsewhere and imported through the glTF pipeline to test how the application handles real game assets.

Sheet 08Revisions

Development status

Nubble is currently in active development.

Features and compatibility may change as the application evolves. Nothing on this page is a promise of a release date.

Revision history
Rev Description State
A Mesh core and viewport Drawn
B Selection and transforms Drawn
C Modelling operators Drawn
D Import and export Drawn
E Textures and UV editing In progress
F Painting and image effects Not drawn
G Polish and first release Not drawn

Sheet 09Issue

Get started with Nubble

Download Nubble for Windows, or read the documentation first.

Download details Read the documentation
The Nubble window with a textured low-poly character standing in the viewport, the outliner listing two objects.