Townbuilder App: Design 3D Printable Fantasy Buildings in Your Browser
This is the Townbuilder web app. Townbuilder runs in the browser and lets you assemble modular fantasy buildings, towns, dungeons, and interiors for tabletop RPGs such as Dungeons & Dragons and Pathfinder.
Build with walls, roofs, floors, stairs, doors, and attachables from more than 3000 models, then export support-free STL files for your 3D printer. Townbuilder is free to try; an optional free account saves and shares your layouts.
Getting started with Townbuilder
The wiki explains the controls, the building tools such as Room Wizard, Roof Warlock, and Stair Sorcerer, and how to export your terrain for printing.