From parts to a Roblox pet
Altushka Builder is built around one loop: assemble modular parts, paint and finish them, add an effect, export a .glb, and import it into Roblox as separate MeshParts. No 3D modeling.
Assemble from the library
Browse 100 parts by category, filter to what you need, and snap them onto your creature in the viewport. Every part is a module designed to fit — and you can import your own .glb models and build with them too.
Pose, mirror, and give it a face
Move, rotate, and position parts until the pet looks right — mirror one side to match the other, and lock axes so pieces stay seated flush while you adjust the rest. Pick one of 6 built-in faces — each in a stack of colorways — or import your own art, and choose which side it goes on. Save your assembly as a preset so you can come back to it.
Paint it, finish it, add an effect
Paint straight onto the pet in 3D — brush, eraser, blur, fill and an eyedropper — or export the part's texture layout, paint it in your own editor, and bring it back. Give it a finish on top: Golden, Diamond, or a colour you pick. Then drop one of 160 particle effects onto any part, tune it, and recolour its layers.
Export
Export the whole creature as a glTF (.glb) file — the format Roblox reads natively — plus a small setup script that does the Studio-side work for you, and a preset file to keep editing later.
Import into Roblox Studio
Bring the .glb into Studio, then click Assemble Pet in the bundled companion plugin — or run the setup script: your pet is assembled and welded, each part its own named MeshPart, with its face applied and its effect playing — ready to recolor, rig, and script.