Modular Castle / Fort (DND / TTRPG)

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Updated to V3 Sept 4, 2026 - this is not compatible with V1 / V2 versions but it is compatible with the other Modular Terrain Structures (Haunted House / Corrupted Church / Modular Towers / Interior Walls etc...)

Check my official Patreon post for most up to date versions of files and change logs etc... here: Modular Fort

I love TTRPG terrain (you can see from my profile I've made a LOT of it) and in particular I have a special place in my heart for Mega Structures for taverns, towers, castles, chapels etc... the problem I run into is that I print one of these - use it maybe 2-3 times and then it sits on my shelf forever. I really like modular tile systems but I don't want to have Lego assemble and then disassemble hundreds of parts before each session. Also these sets often look beautiful but as a short DM seeing over a DM screen and then over an immaculate walls covered in Greebles it can get hard to keep track of everything.

This is a Modular Structure system which is designed to have larger tiles so you have fewer parts to assemble, simple layouts that are easy to re-use, mitigate the high wall "playability problem" and still retain that aesthetic "wow" factor that a mega structure brings to the table.

This structure is sized for 32mm DND / TTRPG miniatures. The doorways are set to allow them to fit through, the crenelations on the roof and windows inside are setup to give them cover and vantage points to see outside.

I've been working on this for ages and I'm finally releasing the premium textured variant for purchase. The original structure was inspired by Fort Nandar of Storm King's Thunder but with this I've created a system that will (eventually) allow you to build almost any kind of structure for your TTRPG campaigns.

By purchasing this system you're helping to fund its continued development. These funds go directly towards test print / filament costs and coffee that fuels my work. Any new parts and enhancements will also be rolled into the "freemium" version below so you're contributions will also help others.

The freemium version of this structure is available on my Patreon over here: Plain Modular Fort System - this is largely the same system but without textured walls added. It's also fully compatible with this one so you can put them together if you want.

Key Value Features:

• Playability & Aesthetics - Flat stackable walls allow you to see the terrain without walls getting in the way - you can add the upper walls for the full aesthetic punch as well

• Modular - The parts are interchangeable can be re-arranged to suit your needs, you can stack these parts as high as you want as well - if you want a 7 story castle then just keep stacking them

• Stability - This uses OpenLock clips connect sections together - it isn't compatible with the OpenLock system but uses their clips and sockets with permission

• Modular Egress - Exterior doorways allows you to swap in/out door designs, there are also "Stair Hole" parts which allow you to include my modular stairs in your structures

Beyond that this is very much a living system and being developed with feedback from people like yourself. If you like what you see come follow along on Patreon or reach out to me here. I want to make something that enhances the table top experience without being also being pain to manage so any suggestions you have to help in that mission are welcome!

Again before the outro spiel - purchasing this gets you these textured files and helps to contribute to the ongoing development of this system. Any new features (listed above) will be added to this system as a part of your purchase - this might mean that we increase the price over time. There might be other sets with exclusive parts in the future but the intent is that this will be the main structure files for this system.

If you like these models you can follow me on Patreon here to get sneak peaks at my upcoming projects, exclusive minis / models and more!