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Support for the old OpenGL renderer, enabling you to switch between RTX ON and RTX OFF.

High-quality screenshot mode that makes your screenshots look even better.

Caustics approximation to improve water lighting effects.

Dynamic lighting for items such as blinking lights, signs, switches, elevators and moving objects.

Updated effects with new sprites and particle animations.

All 3,000+ original game textures have been updated with a mix of Q2XP mod-pack textures and our own enhancements.

Improved ray tracing denoising technology.

Real-time reflectivity of the player and weapon model on water and glass surfaces, and player model shadows, for owners of the complete game (the original Shareware release does not include player models).

Better physically based atmospheric scattering, including settings for Stroggos sky.

New dynamic environments (Stroggos surface, and space).

Time of day options that radically change the appearance of some levels.

Improved Global Illumination rendering, with three selectable quality presets, including two-bounce GI.

Here's a list of what's new in Quake II RTX, according to NVIDIA: The overhaul brings a whole slew of improvements to lighting, textures, and effects to the fore that, in total, make Quake II look more modern than ever. It's an interesting test of just what ray tracing can do for a game, especially considering Quake II's age.

Quake II RTX GTC 2019 Demo Walkthrough