What problem does it solve? Choosing the right game engine and meeting platform certification requirements is confusing for developers targeting PC and console, and poor early decisions lead to performance bottlenecks and failed submissions. ## Core Features & Use Cases - Engine Selection Guidance: Decision trees and comparison tables for Unity 6, Godot 4, and Unreal 5 based on 2D/3D needs, team size, and budget. - Platform Feature Integration: Covers Steam features (achievements, cloud saves, Workshop) and console certification requirements (TRC, XR, Lotcheck). - Optimization & Input Principles: Profiling tools per engine, common bottleneck fixes, and controller input abstraction with haptic feedback guidance. - Use Case: A solo developer starting a 3D indie game can use this Skill to pick Godot 4 over Unreal, plan Steam achievements integration, and set up action-based controller mapping before writing code. ## Quick Start Ask the AI to help you choose between Unity, Godot, and Unreal for your 2D cross-platform game and outline the Steam features you should integrate.