Given the .7z extension and the "GAMESPACK" label, this is a compressed archive containing:

If you’ve stumbled upon the file Mirage-VR_REPACKLAB-ROMSLAB-UNFITGIRL-GAMESPACK.7z , you’re looking at a massive, unofficial compilation of Virtual Reality content. The name itself is a mouthful, stitching together several "scene" monikers common in the world of game archiving and repacks. Before you hit extract, 1. Decoding the Name

Most repacks include all necessary patches and "cracks" already applied, meaning the games are intended to be "plug-and-play."