The specific file is a community-distributed repack. Groups like Team MJY or MovieJockey often bundled these pre-modded versions to provide an "install and play" experience for users who did not want to manually apply patches to the original 2002 files.
The primary selling point of the 2012 version was the sheer volume of characters. Because it was a mod, developers weren't restricted by licensing agreements. You could pit a 2012 version of John Cena against a retro Undertaker, or use wrestlers who hadn't even been in a WWE game officially. The specific file is a community-distributed repack
The file is a .rar archive, which requires software like WinRAR or 7-Zip to extract. Because it was a mod, developers weren't restricted
512 MB to 1 GB RAM (4 GB recommended for smoother performance on modern OS) Graphics: 64 MB video card with DirectX 9.0c support Storage: Approximately 1 GB of free hard drive space Installation Notes 512 MB to 1 GB RAM (4 GB