But full-screen mode seems to be different - full-screen games can't be Alt+Tabbed out of as easily. This isn't a problem when you play a game in windowed mode, where you can Alt+Tab easily. It's not just pressing Alt+Tab that's a problem - pressing the Windows key may do the same thing, as it takes you out of the game and back to the Windows desktop. Why is Alt+Tabbing Out of a Full-Screen Game So Problematic?