Describe a level in one sentence: agents plan, algorithms build, validators check — a playable Flame level in about a minute.
Neuro Symbolic Game Level Designer is a hybrid AI level-design tool built for an IBM Bob 2.0 hackathon. You describe a level in one sentence; a pipeline of agents plans it while classical algorithms build and verify it. The output is a complete, playable 2D isometric Flame game level — a Tiled map plus a typed Dart loader — with a six-check validation report covering spawn reachability, item placement and pathfinding.
The author, raf-xtgt, describes the build on dev.to: "One orchestrator session wrote the architecture and a precise prompt for each task. A coding agent implemented each task, and I reviewed it with tests and browser checks. IBM Bob built the first five tasks… After my Bob credits ran out, I continued with Claude Code using the same workflow." Stack: Flutter web / Flame 1.38 frontend, Python + FastAPI + LangGraph backend, Gemini agents on Vertex AI, backend on Cloud Run.
Honest note: it's a research-style hackathon project — the levels look charming, but game feel is still generator-grade.