: If the game launches in 640x480, right-click the .exe , go to Properties > Compatibility , and run in compatibility mode for Windows XP .
: Supported natively in the Definitive Edition and mobile versions; requires mods like GInput for the classic PC version. Download Grand Theft Auto III
The original "Classic" PC version often requires fan-made patches to run correctly on modern systems like Windows 10 or 11. : If the game launches in 640x480, right-click the