Warsztat.symulator.v1.2.10005.part1.rar -

This file name refers to the first part of a split compressed archive for the game (translated as "Warsztat Symulator" in some Polish contexts).

The v1.2.10005 tag suggests it is a specific update or "hotfix" build of the software. Warsztat.Symulator.v1.2.10005.part1.rar

The .part1.rar extension indicates that the full installer was too large for a single upload and has been split into multiple pieces. You will need all subsequent parts (part2, part3, etc.) in the same folder to extract the contents. This file name refers to the first part