Summary
Alex Finn shows how to build a complete video game with Claude Opus 5.5, even with no coding background. He opens by arguing that gaming is a huge opportunity, pointing out that the industry earned more last year than music, movies, and the major US sports leagues combined.
The tutorial lays out three tracks. Beginners can build a single-file game with Three.js using plain JavaScript and HTML, with nothing to install or pay for. The medium track, which Finn demonstrates, uses the Unity engine along with Meshy for generating 3D assets. The advanced track uses Unreal Engine. He works in Claude Code Desktop and notes that GPT-6 Astra is also a strong option for game building.
The walkthrough follows a roguelike from idea to playable vertical slice. Finn prompts for punchy combat and a dodge roll, tests the result, and then layers on wave-based progression with power-ups after each round. He stresses using descriptive language in prompts, iterating on how the gameplay feels, and later adding 3D assets, polish, testing, publishing online, and ways to make money from the finished game.
📺 Source: Alex Finn · Published November 04, 2026
🏷️ Format: Tutorial Demo
