This torrent contains the 18+ patch for the Steam version of Muv-Luv Alternative. The game itself is not included. The files have been repacked as the original installer isn't compatible with 'non-Steam' installs. Unpack the patch archive with a .7z-compatible archive tool (7-Zip is free and recommended). Place the unpacked files in the install directory for Muv-Luv Alternative (generally, C:\Program Files (x86)\Steam\steamapps\common\Muv-Luv Alternative) and overwrite if/when prompted. Note that this patch was released for the 2018 (Sekai Project-published) build. If you've purchased the 2017 (Degica-published) version, you may need to update.