Summary
Matt Wolfe documents the end-to-end process of building The Librarian 2, a 3D sequel to his earlier vibe-coded browser game, using AI coding tools as the primary development engine. Rather than a simple one-prompt demo, the video walks through a realistic multi-session workflow: Wolfe begins with Claude Code running the Opus 5 model to scaffold the initial 3D environment, then transitions to GPT 5.6 inside ChatGPT’s CodeEx mode for iterative refinement — passing context between sessions via an auto-generated design markdown file pushed to GitHub.
The game itself is a roguelite library-management title with procedurally generated levels, permanent meta-upgrades, boss encounters, and environmental disasters like earthquakes. Wolfe deliberately compares this workflow to how AAA studios structure pre-production — mood boards, game pillars, core loop definition — arguing that most viral vibe-coded demos skip this planning phase entirely, which is why they tend to feel shallow.
The video is a practical case study in multi-model collaboration: using Claude Code’s Opus 5 for initial architecture and creative generation, then GPT 5.6 for fine-tuning and bug fixing, with GitHub as the version-control layer that lets Wolfe roll back when a model steers the codebase in the wrong direction. For developers curious about the current ceiling of AI-assisted game development — and the workflow decisions that separate a playable product from a one-level demo — this is a thorough, first-person account.
📺 Source: Matt Wolfe · Published August 13, 2026
🏷️ Format: Hands On Build
