Launch Mafia.exe . If you see a “CD-ROM not found” error, mount a virtual CD image (use WinCDEmu) or apply a no-CD fix included in the REPACK.
You may also need to install to fix resolution or "secure ROM" errors on modern systems. Verification and Safety Mafia: PC System Requirements - 2K Support
Searching for " PC Game Highly Compressed REPACK" typically refers to unofficial, third-party installer versions of either the 2002 original 2020 remake