These are modified OpenForge tiles that thin the walls and add pilla and arches. The floo (and walls) are in the style of the old OpenForge dungeon tiles (by Devon Jones). Using those floo should work seamlessly with these, although they generally fit in with any such terrain. I'm starting off with a straight wall, a rounded corner, a large rounded corner (slower curve and is 4x4, though this one leaves the center open for your choice of floor tile in the center), and a diagonal corner. Thanks to Devon Jones for his work on OpenForge. Edit: 2017-06-18 Added straight wall with doorway opening. Also added a 4-pack variety of doo sized to fit the opening (single, double, ba, and prison door). Edit: 2017-06-19 Added the large curved wall with a doorway opening in the center arch. Edit: 2017-06-19b Added curved corner doorway, diagonal doorway, and L-corner doorway (use X mirror to flip it and have the doorway on the other side of the L). Added 3" wide endcap. Added 4" wide endcap, 2" raised walkway, and 4" raised walkway. Edit: 2017-06-20 Added freestanding walls for 2" and 4" straight, short round, long round, and L-shaped corne. That should make the set even more veatile. Also added 2x2 and 4x4 floo (only) so people don't have to hunt down the correct floor style in other things. (Having said that, Devon usually adds in a lot more optio for sizes, so it might be worth it - these floo are the old dungeon style.) Edit: 2017-06-20b Added a large curve (the 4x4 veion) that has no wall, so it is just a semicircle of pilla and arches. Also added a veion of that without the floor, so you can place it on any dungeon style. Edit: 2017-06-20c Added a straight wall that is broken, with bits of rubble in the corridor. Useful for connecting to a sewer or cavern area, perhaps. Edit: 2017-06-20d Added a U-shaped pilla-only (no base) piece that is 4" wide (so 2 pieces of it will make a circle of pilla with a diameter of 4"). Also added 2", 4", and 6" straight pilla-only (no base) so they can be placed on any terrain to make line(s) of freestanding pilla. Edit: 2017-06-21 Replaced the slow curve pilla-only (no floor) with one that has had the mesh solidified and reduced, as I wasn't happy with how that one printed last night.