Developer vibe-codes a Vulkan game engine in two weeks with Claude Opus
MartinCap94 · reddit · 2026-11-16
A developer with pre-AI game engine experience shares a two-week experiment building a game engine entirely with AI.
- Stack: Vulkan backend, Jolt physics, SDL3, EnTT ECS, plus Mixamo/Quixel/Poly Haven CC0 assets; vehicles were generated by Claude.
- Workflow: mostly Claude Opus 5.5 at Medium Effort, Fable 5.2 for asset generation; small tasks merged by spawned threads with a "batcher" thread that builds, tests, and bisects broken commits; larger tasks ran in separate git worktrees with headless testing.
- Cost: upgraded from Pro to Ultra plan along the way.
- Verdict: gameplay systems and Luau scripting remain rudimentary so a full game isn't possible yet, but no major showstoppers emerged.
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