My Full AI Utilization Project: SumMon ->Divinity 2 (manipulable terrains) + For the King (dice based combat on hex tiles) + Creature Collection

Hello everyone, As a developer with 10+ years of experience, I started this project in January 2026 to see how far AI technologies had progressed in game development. After nine months of work, it has now reached its current state: Demo available: [https://store.steampowered.com/app/5130400/SumMon/](https://store.steampowered.com/app/5130400/SumMon/) The game is developed in Unity. For the production pipeline, I used: Concept Art → GPT Image and NanoBanana 3D Models → Meshy for model generation, with some model editing done using GPT-6 Astra Animations → GPT-6 Astra for rigging and animation generation. It is quite good at rigging, but its animation generation is still average to below average. Instead of making it to generate an animation from scratch, it does better job to retarget animations. For coding: System discovery and targeted editing → Gemini Gameplay logic implementation → Claude Opus 5.5 VFX and shaders → Claude Fable 5.1 Before I started coding with…