Version 0.5.12 is an older build from the game's early development. You can find the most stable and up-to-date version (currently past v0.7.33 ) directly on the Official Steam Store Page.
Since that specific file name corresponds to an early access version of the colony sim game TFM: The First Men , files distributed this way—especially those with version numbers like —are often from third-party distribution sites. TFM.The.First.Men.v0.5.12.rar
Previous update - 6 November 2024 Version 0.7.31 - The Sacred Genesis Next update - 13 January 2025 Version 0.7.33 - Patch Update. Version 0
If you downloaded this file from a specific website or forum, the "piece" (password) is typically found in one of the following places: TFM.The.First.Men.v0.5.12.rar