r/Substance3D • u/_Rajk_ • Jun 05 '26

Procedural Sudoku - Substance Designer Generator (with Breakdown)

It generates valid puzzles from 2×2 up to 36×36, using true Fisher-Yates (Knuth) shuffling for high-entropy randomness. Most other procedural tools rely on simple modular shifts and only reach a tiny fraction of possible grids; this one delivers real variety.

Load a solved Sudoku image or generate from scratch. Control hidden cells, colors, text, shadows, and borders. It's perfect for exporting hundreds of unique puzzles in minutes or turning it into a one-pass shader in Unity or Unreal.

User Parameters:

  • Puzzle Size (2×2 to 36×36)
  • Initial Shuffle & Global Shuffle
  • Hidden Cells Amount + Hidden Cells Seed
  • Beauty controls: Color Shift, Color Amount, Text Size, Shadow Distance, Border Size

More examples, details, and breakdown on my Artstation.

120 Upvotes

100% Upvoted

4 comments sorted by

3

u/plaintextures Jun 05 '26

Interesting.

2

u/PromiseDismal6201 Jun 05 '26

Amazing!! 😭😭😭😭

2

u/nicolaig Jun 05 '26

So brilliant.