The search term is a time capsule from the golden era of PC torrenting. It represents the moment a specific gaming community came together to solve a problem: How to play a great game without the annoyance of physical discs or malfunctioning DRM.
Getting running properly on modern hardware often requires bypassing outdated "Games for Windows Live" (GFWL) requirements, which were removed in the official DiRT 3 Complete Edition
The digital landscape for older racing titles is complicated by car and music licensing agreements. Because corporate licenses for real-world vehicles and soundtracks expire after a set number of years, Codemasters was eventually required to delist DiRT 3 from major storefronts like Steam.