The official, free, open-source tool. Always download it from the official site 7-zip.org to avoid potential malware from similarly named sites.
To open the file, you need a utility that understands the .7z format. File: TouchdownGirls-Final.7z ...
Once you have the software installed, the "story" is just a few clicks away: the TouchdownGirls-Final.7z file. Select 7-Zip > Extract to "TouchdownGirls-Final" . The official, free, open-source tool
Because .7z files can contain any type of data, including executable scripts, it is always a good idea to on the folder after you extract it, especially if the file came from an untrusted source. including executable scripts