Unreal Engine

Unreal Engine is the engine behind a large share of AAA and high end indie production, and by version 5.7 its machine learning tooling has moved from experimental to genuinely usable. The in-editor AI Assistant offers context aware help, C++ code generation and step by step guidance from a slide out panel without leaving the editor. MetaHuman, now fully integrated into the editor rather than a browser app, creates photorealistic digital humans with mesh conforming, batch automation through Python or Blueprint, and real time facial capture from a phone camera via Live Link Face. The ML Deformer framework trains machine learning models to approximate complex mesh deformation on skinned characters, giving film quality muscle and cloth behaviour at runtime cost. Procedural Content Generation handles large scale landscape and environment population, and Learning Agents provides reinforcement learning tooling for training in-game agents. NVIDIA's ACE plugins add on-device speech recognition, expressive text to speech and autonomous NPC performance running locally on RTX hardware. The engine itself is free to download, with a 5% royalty on gross product revenue above the first million dollars.