r/ClaudeGameDev • u/MartinCap94 • 6h ago
Alpha I built a game engine in 15 days with Claude
Hello everyone, I am a very private person, but I wanted to share my experience with Claude in the past 2 weeks. I have worked in game dev for the past 7 years on a proprietary game engine as a tool specialist. With the latest enhancements to Claude, I wanted to test out how far I can push it by writing a new game engine from scratch. I was quite surprised how Claude Opus 5.5 (on Medium Effort) was able to basically build it with my guidance. I haven't written a single line of code during this process. Additionally, I've only worked on it after work and on weekends.
The engine is built with a Vulkan backend, uses Jolt for physics, SDL3 for window management and many more libraries. It also uses a C++ UI framework I've built with Claude on the weekend before I started this project which I call Silky UI at this moment.
Some of the art is procedurally generated but I think man-made assets are still a completely different beast. I've used mainly Mixamo, Quixel Megascans (Fab) and Poly Haven and other CC0 assets. Same applies to sounds - some are procedurally generated, some are from Freesound (CC0), usually polished and cut up by Claude. All the vehicles in the video were generated with Claude besides the Bugatti EB110 which is from here: Bugatti EB110 by ᗩᒪE᙭. Kᗩ. licensed CC BY-NC 4.0, converted for the engine.
I hope you find my experiment interesting, I certainly did. Maybe I will try to make a proper game with it in the future, but for now I quite enjoy experimenting with the renderer and also with testing various UX / usability ideas in the editor.