PlayStation 2
The original 2001 console release established the controls, visual character and city limits.

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.
GTA III first launched in October 2001 on PlayStation 2, the Windows version arrived in May 2002, and Xbox got it in November 2003, bundled with Vice City. All three versions run on the original RenderWare engine and behave — aside from minor technical differences — the same way.
A mobile port for iOS and Android arrived in December 2011 for the series’ tenth anniversary. It’s a different build from the PC/console trio: touch-adapted controls, a different graphics pipeline, and, crucially, no support for classic PC mods.
The turning point came on 11 November 2021 with Trilogy: The Definitive Edition — a remaster of GTA III, Vice City, and San Andreas on the Unreal engine. The launch was plagued by major technical problems, and Rockstar even pulled the edition from its own PC store for a few days. When the remaster arrived, the original (Classic) versions vanished from digital storefronts — anyone wanting to buy the RenderWare version fresh was out of luck.
The original 2001 console release established the controls, visual character and city limits.
The PC port added higher resolution and modding. Community fixes help on modern Windows, but the exact executable version matters.
The later console version appeared in a bundle with Vice City and included selected visual and technical changes.
The mobile 10-Year Anniversary version adapted the controls for touchscreens and also appeared on selected mobile platforms.
The original PS2 version has appeared through backward compatibility or emulated digital releases; availability varies by region and shop.
The Trilogy DE remaster appeared for PS5, PS4, Xbox Series, Xbox One, Switch and PC. It uses a different technical base from Classic.
A legal original PC copy with the correct version and a separate backup is the best option.
Definitive Edition supports current platforms and newer controls, but is incompatible with the classic ASI/CLEO stack.
Check current availability in your device's store and support for its OS version; an old purchase does not guarantee present compatibility.
Answers to the main questions about this topic
In October 2001 on PlayStation 2. The PC version arrived in May 2002, the Xbox version (bundled with Vice City) in November 2003.
Around the launch of the Definitive Edition in November 2021, Rockstar pulled the original (Classic) versions from digital storefronts to make room for the remaster. Anyone who already owned the Classic version didn’t lose access — this only affects new purchases.
No. It runs on a different engine (Unreal instead of RenderWare) and doesn’t support the traditional ASI/CLEO tools that most older mods rely on.
Yes, significant ones. The game launched on 11 November 2021 with numerous technical bugs, and Rockstar briefly pulled it from sale on PC over unintentionally included files. Subsequent updates improved the state of the game.
Yes, as the 10 Year Anniversary Edition in December 2011 for iOS and Android — a standalone port with adapted controls, not a straight transfer of the PC version.