: The .7z extension uses the LZMA/LZMA2 algorithm, which generally provides better compression ratios than standard ZIP files.
“7-Zip install and tutorial: The best free file archiver you'll ever need” YouTube · Mr. Sujano · 5 years ago HL_01_20.7z
: This specific file is likely a standalone archive. However, if you see files ending in .7z.001 , .7z.002 , etc., it means the archive has been split into parts ; you would need all parts in the same folder to extract them. How to Open and Review Contents However, if you see files ending in
: Download the official, open-source tool from 7-zip.org . Avoid any other domain to stay safe. : Right-click HL_01_20
: Right-click HL_01_20.7z , hover over "7-Zip," and select "Extract to 'HL_01_20'" to see the internal files without cluttering your desktop.