This special release of Quake II includes the 3 shareware levels, but with extensively reworked graphics and codebase to make use of Nvidia's ray-tracing technology in their contemporary GeForce RTX 20 series of graphics cards.
Quake II RTX is a cutting-edge, ray-traced reimagining of the old school classic. Global lighting effects, including realistic reflections, refraction, shadows, ambient occlusion and global illumination are a result of the path-traced simulation of light.