Build A Zelda-Style 3D Game From Scratch With One API Key

A hands-on account describes building a playable third-person 3D game demo from an initial text prompt using AI image, image-to-3D, language-model, and game-development tools, with Atlas Cloud serving as a single API gateway for several models. The workflow generated bioluminescent fantasy environment art and a skybox with GPT Image 2, converted a cleaned isometric diorama into a 3D environment with Hunyuan 3D, designed and standardized a ranger character through YouChuan MJ V8.1 and Nano Banana 2, and produced a textured, rig-friendly character with Seed 3D. A separate lantern prop was created with Nano Banana 2 and Hunyuan 3D, while Mixamo supplied automatic humanoid rigging and walk, run, and jump animations. Claude, connected to Blender and Godot through MCP, handled technical tasks including asset cleanup, texture restoration, scale correction, GLB export, game scene assembly, character controls, animation logic, lighting, fog, and camera behavior. The account emphasizes practical constraints and lessons, including preserving color information in environment inputs, keeping models below roughly 100,000 faces, using close-fitting character clothing with distinct limbs to improve rigging, preparing clean front-facing T-poses for character generation, and exporting unrigged OBJ files when Mixamo has trouble recognizing a skeleton. It concludes that centralized AI access and automation can substantially reduce the specialized modeling, animation, programming, and account-management work traditionally needed for a small game prototype.

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