Agentic skills framework for Godot 4.x game development — 41 domain-specific skills that give AI coding agents deep expertise in GDScript and C#. Covers the full development lifecycle: project setup, architecture patterns, player controllers, animation, shaders, particles, audio, physics, 2D/3D rendering, UI, multiplayer, save/load, and deployment. Each skill provides tested code examples, comparison tables, common pitfalls, and implementation checklists. Includes 3 specialized agents for game architecture, implementation, and code review.