This specific naming convention (Version + Date) is frequently used on sites like SteamRIP or FitGirl Repacks . If you downloaded this from an unofficial source, it is highly recommended to run the file through VirusTotal before extracting it.
This version includes the base game where you explore an alternative frontier, mine for rare minerals, and upgrade your gear at a saloon. By 2020, the game had received several content updates including: Multiple endings (8+ total). The "Trails" update content. Support for both VR and non-VR play. File: Cave.Digger.PC.Edition.v2020.08.11.zip ...
Third-party "cracked" versions of games often trigger "False Positives" in Windows Defender or antivirus software due to the modified .exe or .dll files used to bypass DRM. This specific naming convention (Version + Date) is