To assist create real-time, dynamic NPC game characters, NVIDIA ACE now supports the open source Qwen3-8B small language model (SLM) for on-device deployment.Â
As well as, the RTX Branch of Unreal Engine 5 features a latest rendering tech demo with source code for developers to make use of as a reference when implementing the newest NVIDIA RTX path tracing technologies.
Integrating AI speech and real-time reasoning into NPC game characters
NVIDIA ACE is a collection of digital human technologies for middleware and game developers that gives ready-to-integrate cloud and on-device AI models for an important features of digital humans—speech, animation, and intelligence. The open source Qwen3-8B AI model is now available through NVIDIA ACE as an In-game Inferencing (IGI) SDK plugin, which simplifies the mixing inside your gaming pipeline and optimizes simultaneous AI inference and graphics processing for accelerated game performance. Qwen3 enables developers to construct enhanced game characters able to real-time reasoning through non-scripted events, dynamic responses based on player inputs and contextually accurate actions.
Alongside the discharge of Qwen3-8B, NVIDIA can also be updating the IGI plugin for Magpie TTS Flow, an experimental text-to-speech (TTS) model for testing dynamic voice capabilities on-device in real-time. The plugin now adds multilingual support, allowing developers to check Spanish and German inside their end-to-end character pipelines.Â
As well as, several improvements have been made to the core IGI SDK including:
- MultiLORA adapters to support fine-tuning model weights quickly with minimal computational overhead.
- CUDA in Graphics support for Vulkan backends, which optimizes graphics and AI workloads for accelerated performance when each are running concurrently.
- A brand new sample that teaches developers use function calling of their language model of alternative.
Download the newest IGI SDK and plugins today.
Latest NVIDIA RTX Unreal Engine 5.6.1 update features Bonsai Diorama rendering demo
NVIDIA RTX Branch of Unreal Engine is an optimized and feature-rich branch that comprises all the newest NVIDIA rendering technologies for Unreal Engine developers. Today, we’re releasing a set of latest updates including the Unreal Engine 5.6.1 release, RTX Mega Geometry, and further ReSTIR PT performance and image quality improvements.
The Bonsai Diorama demo accompanies the NvRTX 5.6.1 release and showcases RTX Mega Geometry together with utilizing ReSTIR PT and the DLSS 4 Technology suite. Access the Project Source, documentation, and developer guide here. Make sure you join our live Level Up with NVIDIA webinar next Tuesday, October 28, 2025 at 10AM PT to get more details concerning the Bonsai scene and have the prospect to ask us questions directly during a live Q&A. Register here.
Join us at Epic MegaJam this week
For Unreal Engine developers, you should definitely take part in our ‘RTX On: Push the Limits with RTX Neural Rendering in Unreal Engine’ modifier category for a likelihood to win a GeForce RTX 50 Series GPU.Â
The ‘RTX On’ category invites developers to harness the total range of NVIDIA’s latest graphics technologies using the NVIDIA RTX Branch of Unreal Engine (NvRTX). Submissions should showcase modern use of no less than one NVIDIA RTX feature from NvRTX—akin to RTX Mega Geometry, RTX Direct Illumination, RTX Indirect Illumination (ReSTIR GI), RTX Path Tracing (ReSTIR PT), along with considered one of the technologies from the DLSS 4 suite—to create immersive visuals or interactive experiences that surpass traditional rendering techniques.
Projects must clearly display tangible advantages or novel effects made possible by RTX neural rendering. Enter here by Friday, October 24, 2025 at 8:59 PM PT.
Resources for game developers
See our full list of game developer resources here and follow us to stay awake thus far with the newest NVIDIA Game development news:Â
