If you are looking to write a paper or a technical guide on this topic, here is a structured outline you can use:
The "mrar" component is the key identifier. It signals that the game has been split into dozens (sometimes hundreds) of .rar , .r00 , .r01 file segments. This was historically done to bypass file hosting limits (e.g., 200MB per file on RapidShare or Mega) and to reduce corruption during large downloads. 101mrar repack
Unlike official release groups like CODEX or SKIDROW, "101mrar" is widely believed to be one of two things: If you are looking to write a paper