How a Non-Programmer Built a 487-File Unity Tool with Claude Code's 'Vibe Coding'

A graphic designer built a complex Unity map editor with 151K+ lines of C# using Claude Code's iterative 'describe → test → fix' workflow and early quality rule enforcement. The Technique — 'Vibe Coding' at Scale A graphic designer with zero programming experience built a fully functional isometric level design tool in Unity over two months using Claude Code. The project grew to 487 C# files and 151,000+ lines of code. The developer's method wasn't traditional programming—it was what they call "vibe coding": describing desired functionality in plain language, testing in Unity, and giving Claude feedback on what worked or broke. The tool includes object placement, occupancy systems, A* pathfinding with baked routes, NPC spawning with AI behaviors, automatic doors, and a day-night cycle—all with real-time debug visualization. As a designer, they focused on making everything visual: color-coded overlays, real-time gizmos, and immediate feedback for every action. Why It Works — Architectur