cat ~/projects/custom-gpts/
Custom GPTs
Custom GPTs used by more than 400K people, led by Unity Dev Assistant.
A set of Custom GPTs designed, tested, and iterated in public. The most used one, Unity Dev Assistant, helps developers with Unity coding and game development questions.
In July 2026 they crossed 400K+ users.
What’s next
OpenAI is retiring custom GPTs on December 11, 2026, and moving creators to plugins. My Unity work in ChatGPT now goes into Unity Essentials, a free plugin with Unity engineering workflows for Codex. You can try it in ChatGPT.
ls ~/projects --related // keep playing
tinyagentoffice/
TinyAgentOffice
A tiny office where AI agents coordinate their work, with roles, reviews, and a dashboard to watch it all.
unity-essentials/
Unity Essentials
A free ChatGPT plugin that packages careful Unity engineering workflows for Codex: onboarding, debugging, health checks, and build validation.
swingi-bois.unity
Swingi Bois Beta
A multiplayer VR game about elastic arms: launch your hands, grab, swing, inflate, and fling yourself across procedurally generated arenas.