PlayStation 2
The original 2001 console release established the controls, visual character and city limits.
Platforms: Grand Theft Auto III
Several technically different games now carry the GTA III name. The original RenderWare version, mobile port and Unreal-based Definitive Edition do not share mods or saved games.
The original generation
Windows PC
The PC port added higher resolution and modding. Community fixes help on modern Windows, but the exact executable version matters.
Xbox
The later console version appeared in a bundle with Vice City and included selected visual and technical changes.
Later releases
iOS and Android
The mobile 10-Year Anniversary version adapted the controls for touchscreens and also appeared on selected mobile platforms.
PlayStation ecosystem
The original PS2 version has appeared through backward compatibility or emulated digital releases; availability varies by region and shop.
The Definitive Edition
The Trilogy DE remaster appeared for PS5, PS4, Xbox Series, Xbox One, Switch and PC. It uses a different technical base from Classic.
What to choose today
For classic mods
A legal original PC copy with the correct version and a separate backup is the best option.
For convenient console play
Definitive Edition supports current platforms and newer controls, but is incompatible with the classic ASI/CLEO stack.
For phones and tablets
Check current availability in your device's store and support for its OS version; an old purchase does not guarantee present compatibility.