Depending on your goal, here is interesting content focused on the technical, legal, and creative aspects of such files: Technical: How to Manage Game Archives
: Once extracted, look for an .exe file (the application) to launch the game. game — kopia.rar
If you are trying to use this file, the content typically involves extraction and installation: Depending on your goal, here is interesting content
: If "kopia" is part of a larger set (e.g., part1, part2), you must download all parts into the same folder and extract the first one to reconstruct the full game. Depending on your goal
: You generally need software like WinRAR or 7-Zip to unpack the contents into a usable folder.