The RTX remixes of classics such as Quake II and Unreal demonstrate how ray tracing, path tracing and Physically Based Rendering can transform the appearance of 1990s games. It also raises a broader question: when is it legitimate to modernize only some aspects of a game while leaving others untouched?
One of the most interesting transformations in the history of first-person shooters is not simply the transition from 2D to 3D graphics. It is a change in what constitutes the center of the game world.
