Build On-Device AI Companions with the NVIDIA ACE Game Agent SDK and Unreal Engine 5 Plugins | NVIDIA Technical Blog

This post introduces the NVIDIA ACE Game Agent SDK Beta and associated Unreal Engine 5 plugins, extending agentic AI infrastructure to game development. It details the SDK's Agent, Chat, and RAG APIs for building on-device AI companions and NPCs, enabling dynamic reasoning, conversation, and tool-assisted actions. The post also highlights new ACE Unreal Engine 5 plugins for ASR (nemo-conformer-ctc-120m), SLM (Qwen 3.5 4B with GGUF support), and TTS (Chatterbox Turbo 350M), all optimized for local, low-latency, RTX-accelerated workflows. Examples from PUBG: BATTLEGROUNDS and Total War: PHARAOH demonstrate the practical application of these tools for creating interactive game characters.