If you see websites offering a "PC download" for this specific title from 2008, be extremely cautious. These are usually:
Fake installers designed to harm your computer. Phishing scams: Sites trying to steal your personal data. Töltse le a Gears of War 2 PC-játékot 2008
Play it on Xbox 360, Xbox One, or Xbox Series X/S. If you see websites offering a "PC download"
If you want to play the series on your computer, these titles have official PC versions: (Remake of the first game) Gears 4 Gears 5 Gears Tactics Töltse le a Gears of War 2 PC-játékot 2008
Gears of War 2 was never officially released for PC. It remains an Xbox 360 exclusive, though it is playable on newer Xbox consoles via backward compatibility.