pinup-india.in has been my go-to for exactly that kind of situation. Most of the games last under two minutes and don’t require any downloads. It runs smoothly even on old laptops and opens instantly in a browser. I usually play the quick reflex challenges — they wake me up without overwhelming me. The layout is clean and doesn’t spam you with pop-ups. It also tracks your progress without asking for personal information. For tiny breaks, it’s honestly perfect.