I Put GPT-6 Astra to the test by building full video games from simple prompts using Codex, Unreal Engine 5, and Blender for 3D asset creation. This video walks through recreating Super Mario, Subway Surfers, Counter-Strike 2, Minecraft, and GTA 6, each one harder than the last. Every game is built from scratch with no open source libraries, covering asset creation, map generation, game mechanics, procedural world building, and physics. Check it out! 👇