Thinger's trend data for the week of September 28th shows four of the seven most estimated-printed model categories are tabletop RPG terrain or accessories. The top search terms include "d," which in context means exactly what you think it means. The printers are building dungeons.
This is not a random spike. October is when D&D tables start back up after summer schedules scatter, and a tiled dungeon floor that took three months of intermittent printing is suddenly ready. The OpenForge system in particular dominates the list: two of the top seven trending models are OpenForge pieces, plus a sarcophagus from the same extended ecosystem. If you have ever thought about building tabletop terrain, the community is essentially telling you that now is when people do it. Here is where to start.
The floor plan: OpenForge
OpenForge is a modular 3D-printable dungeon tile system: a free, open-source library of interlocking floor tiles, walls, pillars, doors and props designed to fit together consistently at 28mm scale. devonjones has been releasing pieces since the early days of Thingiverse, and the library now spans several thousand individual files. The two trending pieces this week are a good place to start a build. The curved floor section adds the visual interest that a room of identical rectangular tiles cannot. The cut-stone pillars divide a large open space into something that reads as architecture at the table.
Both pieces use the same 1-inch grid as most dungeon terrain systems and print well in gray or stone-colored PLA without any post-processing. A light dry-brush with a slightly lighter gray is enough to make them look like actual cut stone, and the curved sections in particular photograph beautifully once you have a full room's worth assembled.
The sarcophagus in the corner
The OpenForge - Dwarven King's Sarcophagus by ecaroth is technically a standalone piece, not part of devonjones's main library, but it is clearly from the same extended ecosystem: it fits the same scale and the same aesthetic. It is the kind of terrain prop that makes a room feel like a specific place rather than a generic dungeon. A throne, a fountain, a coffin: these are what separate a tiled floor from a scene. At roughly 980,000 estimated prints, it is the most-printed individual terrain prop in this week's data, and it is easy to see why. Every dungeon needs a room that communicates something. A sarcophagus in the center communicates quite a lot.
The skeleton in the room
Every dungeon needs its guardian. Living Bones with Short Spear and Shield by Syllogy on Thingiverse is a 28mm skeleton warrior: a good pose, equipped with a short spear and round shield, based for a standard round base. This is the top trending 28mm miniature this week at roughly 1 million estimated prints. For a dungeon you are actually running, printing three or four of these costs very little filament and puts a proper encounter on the table. They also paint quickly, which is worth mentioning: bone is a forgiving color to base coat, and a few minutes of dry-brushing produces results that look deliberate.
A chest that bites back
The Mimic - Toothy Treasure Chest by Yasashii on Thingiverse is the most beloved trap in tabletop RPGs rendered in plastic. It is a treasure chest with rows of teeth and a wide, menacing grin, designed for 28mm scale. Yasashii makes a wide range of tabletop miniatures in a consistent style, and this one has been a community staple for years. No session that ends with the mimic reveal is a session anyone forgets. Place one in the center of a loot room, let the players describe their approach, and wait. The resulting story is yours to keep, and the print cost is a few grams of filament.
Scatter terrain: the Viking Goods Pile
Viking Goods Pile by dutchmogul on Thingiverse is scatter terrain: a collection of barrels, crates, sacks, pots and Viking-age clutter, designed to fill out the background of a scene. Scatter terrain is the detail work that makes a tiled floor look inhabited rather than assembled. dutchmogul's Thingiverse library is enormous and deeply consistent, and pieces from it have been showing up in Thinger's trending data throughout the year. The Viking Goods Pile is ranking 4th this week at roughly 960,000 estimated prints. It is not the most dramatic print, but it is the one that makes everything else read as a world.
A practical tool for the person running it all
The DM Screen-Top Initiative Tracker by thelukec on Thingiverse is one of those prints that solves a specific problem so neatly you wonder why you did not find it sooner. It sits on top of a standard DM screen and holds initiative cards or tokens in order, keeping the turn sequence visible without taking up table space. That it is trending alongside all this terrain says something: the people printing dungeon tiles are also the people running sessions at those tables. This is a functional object, not a display piece, and functional objects are the honest argument for having a printer.
Where to look next
The Wargame Terrain collection on Thinger has more than thirty models in this category, from full modular castle buildings to individual dungeon props. For the figure side, the D&D miniatures collection covers player characters, monsters and creature tokens.
Search "openforge" in the free Thinger app and you can search across 600,000 free models on Thingiverse, Printables and MakerWorld at once. The OpenForge library is genuinely large, and having a way to save and organize pieces as you find them makes a project this size feel manageable. The dungeon is already in the printer. The only question is how long you want to spend furnishing it.
