You can check if older versions are available on Steam by right-clicking Barony in your library > Properties > Betas . While 3.3.7 might not be explicitly listed, sometimes previous major versions (like "blessed_addition") are preserved there.
The was a major free expansion for Barony (released around 2018-2019) that introduced significant new content, including the Citadel, new classes, enemies, and traps. Where to Find It File: Barony.Blessed.Addition.v3.3.7.zip ...
Because version is an older build (the game has since moved to version 4.x/Quality of Death), it is likely being hosted on unofficial archive sites or community repositories rather than the main Steam or GOG branches. You can check if older versions are available
If you found this file on a third-party site (other than Steam , GOG , or Humble ), be extremely cautious. "Zip" files with version numbers like this are common targets for repackaged malware. Always scan the file using a service like VirusTotal before unzipping. Where to Find It Because version is an