NVIDIA’s RTX Remix is a free, community-driven modding platform built on Omniverse, enabling modders to remaster classic DirectX 8 and 9 games with cutting‑edge RTX technologies. It captures in-game scenes via a custom runtime, extracts textures, models, and lighting into OpenUSD format, and allows users to relight scenes, upgrade assets with AI-generated PBR textures, and integrate effects like full ray tracing, DLSS 4 (with Multi‑Frame Generation), Neural Radiance Cache, and Reflex.

The platform exited beta in early 2025 and already boasts over 350 active projects and 100+ released RTX Remix mods, including remasters of games like Half-Life 2, Portal, Deus Ex, and Fallout: New Vegas. Featured demos—Half-Life 2 RTX and BioShock RTX—show modern enhanced visuals using path tracing, realistic materials, and DLSS, but also highlight performance costs, often making high-end GPUs (RTX‑40/50 series) a practical necessity. NVIDIA is encouraging more development via a $50,000 Mod Contest on ModDB, with top prizes up to $20,000 and community voting through August 2025.