I’m creating a 3-dimensional puzzle game for mobile phones and need an experienced game developer to turn the concept into a playable build. The goal is a clean, engaging experience that runs smoothly on both Android and iOS. Core requirements • Develop core puzzle mechanics in 3D. • Design an intuitive touch-friendly interface and basic HUD. • Implement a level system (at least five sample levels) so I can test difficulty progression. • Optimise performance for common mobile hardware. Nice to have • Simple sound effects and a looping background track. • Basic menu screens (start, level select, pause, settings). • In-app analytics hooks so I can track session length and level completion. Tools you’re comfortable with—Unity, Unreal, Godot, or another engine—are fine as long as the final APK/IPA and source project files are included. I’ll provide the game concept, theme references, and any art or asset ideas I already have. You handle implementation, light placeholder art, and make sure everything runs without crashes. If things go well, we can discuss expanding the feature set and adding polished art in a follow-up phase.