Right-click the game's desktop shortcut, go to Properties > Compatibility, and check Disable fullscreen optimizations . This stops Windows from interfering with the game's native rendering, preventing random desktop crashes.
If you are using digital distribution platforms like Steam or GOG, the initial installation is handled by their proprietary clients. However, the legacy setup files are still highly relevant for players installing from original DVDs, compressed archives, or running manual compatibility patches. System Requirements for a Smooth Installation Mafia 2 Setup Exe