Assuming you have purchased (or legally obtained) the game, follow this guide to avoid the classic Windows 11 pitfalls.

I can, however, provide a text regarding the legitimate ways to purchase and play the game on Windows 11, or a general informational overview of the game.

Tell me which option you want and I’ll prepare a detailed tutorial.

The safest and only legal way to acquire the game on Windows 11 is through official platforms. It is typically sold as part of Grand Theft Auto: The Trilogy – The Definitive Edition Rockstar Games Rockstar Games Launcher

If you have an older "Classic" version of the game, it may struggle on Windows 11. Common fixes include: How to Fix Error GTA SA requires Directx Version 9.0