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But is has resulted in a much smaller and relatively cleaner node group. New vs old for comparison

After MUCH trial and error, I've finally made the curve based walls compatible in earlier versions of Blender (down to 4.0). Unfortunately, although the walls are now straight with no pinching, Switch nodes in Shaders are apparently different in 5.3, so it breaks the entire ceiling shader again :)

Blender project showing a small mess of spaghetti nodes generating a randomized wall system with proper, math based miter profiles!

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Puff @iampuff.bsky.social · 07/10/2026

the new compositor nodes in 5.2 are like, really cool :v

A render from the Backrooms generator using the new Dithering node introduced in Blender 5.2. It almost looks like one of those old point and click computer games.

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Puff @iampuff.bsky.social · 05/10/2026

Why limit it to just random selection? PROXIMITY BASED LIGHTS

Screenshot of the Backrooms generator in blender, all of the lights are on, except for one in the foreground, left side, which has an Empty Axes object near it causing it to turn off.

Same Backrooms generator, all the lights on except one, now with the Empty object hovering over the light on the right side in the foreground. The left one is now on, and the right is now off.

Empty object now sitting between the two lights in the foreground. The radius has been expanded to cover both lights, causing them both to be off, with the rest remaining on.

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Puff @iampuff.bsky.social · 29/09/2026

Just look at all that customization. You'll be able to make the fuck outta some Backrooms and it'll be like SO easy

Screenshot of a Blender modifier tab showing several size and toggle options. From top to bottom:

Size dropdown:
X (meters)
Y (meters)
Room Height (meters)
Wall Amount X
Wall Amount Y
Dynamic Scaling Toggle
Density (Lower = More Walls)

Wall & Trim dropdown:
Wall Thickness
Inner Walls Toggle
Randomize
Noise Scale (Keep low!)
Round Walls toggle
Round Wall Poly Count
Round Wall Radius
Wall Trim Toggle
Trim Width
Trim Height
X Pos Wall Toggle
X Neg Wall Toggle
Y Pos Wall Toggle
Y Neg Wall Toggle

The rest of the customization options from the same modifier tab

Wall Cut-Out dropdown/toggle:
Cutout Height
Cutout Width
Randomize Sizes Toggle
Size Min (X, Y, Z vector inputs)
Size Max (X, Y, Z vector inputs)
Randomized Rotation Toggle
Rotation (X, Y, Z vector/radian inputs)

Misc dropdown:
Ceiling Toggle
Floor Toggle
Outer Cube Toggle
Light/Wall Margin (prevents lights from clipping walls)
Light Brightness

Materials dropdown:
Walls
Wall Trim
Ceiling
Floor

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Puff @iampuff.bsky.social · 26/09/2026

Integrating some of the Blender Guru stuff. Procedural boolean cutouts :D I'm having so much fun with this, y'all

Screenshot of a Blender project window featuring a fully procedural Backrooms generator. On the viewport is a render showing walls in the foreground and background with rectangular archways, adding extra segmentation to the room. Below, the geometry node tray is barely visible. You don't want to see that, anyway. It's a mess. To the right is the ever growing, now more organized customization options that will be available to the user on release.

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Puff @iampuff.bsky.social · 24/09/2026

The wall trim system took me way longer to build than I'd like to admit but it's finally done and it deserves its own render. I noticed BG has a full tutorial on doing a Backrooms generator as well, and his version has some neat options I'll probably work in.

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Puff @iampuff.bsky.social · 20/09/2026

She's ~almost~ ready for first release. Just need to fix the trim on the wall caps, wire up the rest of the customization options to the group input (so everything shows up in the modifier tab, yay ease of use!), and add some grunge options to the shaders. Maybe also tweak the vent instancing system

Screenshot of a Blender project featuring a fully procedural backrooms generator. The main window shows a rendered view of the work in progress, with dingy yellow walls, floor, and ceiling carrying the signature look of the Backrooms. Fluorescent lights line the ceiling in an even grid pattern of every 5 tiles. A single ceiling vent in the foreground sits offset from the lighting grid. Another is slightly visible in the background to the left. Some of the smaller walls are missing trim around the thin parts, an error that will be corrected prior to release.

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Puff @iampuff.bsky.social · 14/09/2026

Still building up the Backrooms generator. After some feedback about the lights, which were randomized, and clipping through walls, I re-built the ceiling in and yoinked its data to sample each individual face's proximity to a wall. No more light clipping :D Will work for instanced objects too!

Screenshot of a WIP fully procedural Backrooms generator. The meshes wireframes are showing, revealing the topology to be driving the size of the ceiling's shader. Two lights are shown exactly 5 tiles away from each other, with none appearing over the walls! Fancy math tricks! To the right is the scene outliner, as well as the WIP modifier settings, which control several aspects of the Backrooms generator. The "Inner Walls" option is enabled

Same view of the Backrooms generator except now the Inner Walls option is disabled, showing a view of the empty, Backrooms inspired room. Some lights appear on the ceiling where there were once walls, showing the dynamic light mask is working as intended. Due to the randomized nature of the walls, this will result in more sensibly distributed lights, leading to a more diverse range of dark & well-lit areas within the generator. It has the added bonus of being able to support instanced objects such as vents, various detectors and even shader variations (wires, missing drop ceiling panels, etc)!

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Puff @iampuff.bsky.social · 10/09/2026

ok I couldn't resist playing with it

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Puff @iampuff.bsky.social · 10/09/2026

Threw together a ~fully procedural~ Backrooms generator for funsies. Still need to set up some more convenient controls for the shaders, but I'll probs be puttin' it up for free.

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Puff @iampuff.bsky.social · 09/09/2026

learn blender and you, too, can spend a week making a lizard so you can make a gif about a joke made in passing

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Puff @iampuff.bsky.social · 04/09/2026

I'd like you all to enjoy his song.

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Puff @iampuff.bsky.social · 04/09/2026

Lemonbird, my round and yellow, extra loud, little gremlin boy, my best friend, has unfortunately passed away. Thank you, Lemonbird, for all the wonderful, song-filled years. You'll be remembered forever.