Procedural Content Generation (PCG) is a powerhouse technique that creates the vast, replayable worlds we love in games like Rogue and Minecraft. However, this power comes with a fundamental challenge: How do you maintain the structured pacing and intentional design of a handcrafted level while still benefiting from algorithmic variability?

The CG-WFC method, short for Cyclic-Graph and Wave Function Collapse, offers an elegant, two-layer solution to solve this issue.