Files named ssv1 are frequently community-shared "Super Save" files. These usually contain unlocked items or specific progress. Once extracted, you typically place the .sav file inside your game's Save folder (usually located in %AppData%\Local\VotV\Saved\SaveGames ).
A free, open-source program that handles almost all compressed formats. You can get it at 7-zip.org .
If it’s just one file and it fails to open, the "piece" you are missing might be a complete download—the file may have been interrupted. 3. Usage for Specific Games
The official tool for .rar files, available at rarlab.com . 2. Is a "Piece" Missing?