Build a Unity Game Using AI in 21 Minutes (Unity MCP Tutorial)

Build a complete Unity endless runner game using AI in this step-by-step tutorial. I'll show you exactly how to set up Unity MCP with OpenCode to build a playable game without writing everything from scratch — perfect for developers who want to ship games faster with AI game development tools. ⏱ Timestamps: 00:00 - Unity MCP Game Demo (Endless Runner) 00:33 - AI Game Dev Setup Overview 01:15 - Connect OpenCode with Unity MCP 02:23 - Install Unity MCP Package 03:28 - Import & Configure MCP in Unity 04:50 - Select AI Agent & Configure Skills 07:01 - Verify MCP Connection 11:00 - Build Test: First AI-Generated Object 12:29 - Generate Road & Environment with AI 14:20 - Create Player + Movement (AI-Written Script) 15:52 - Debug & Fix Player Controls 16:36 - Test Jump, Gravity & Camera Follow 17:38 - Full Game Build 19:00 - Extra Features (Coins, Obstacles, Damage) 20:57 - Wrap Up & What's Next In this Unity AI tutorial, you'll learn how to leverage AI coding assistants with Unity MCP to build a complete game from scratch. We cover scene setup, AI-generated C# scripts, player physics, camera systems, and game mechanics — all using natural language commands through OpenCode. Whether you're new to Unity game development with AI or you want to supercharge your existing Unity MCP workflow, this guide covers the complete AI game dev pipeline from setup to playable build. 🔗 Resources: Unity MCP GitHub: https://github.com/IvanMurzak/Unity-MCP Source Code: https://github.com/kartik786-git OpenCode Docs: https://opencode.ai 📱 Connect: LinkedIn:   / kartik-kumar-721271196   Blog: https://www.dotnetrealworldexample.com/ 👉 If this AI game development tutorial helped, drop "UNITY" in the comments and I'll share the full source code. Subscribe for more AI + Unity tutorials. #UnityAI #GameDevelopment #UnityTutorial