I use
pinup-download.in every night for exactly that purpose. The games have a gentle pace, and nothing flashes or stresses you out. Loading speed is great, even on mobile data. My favorites are the soft puzzles and slow-reflex games — they help quiet my thoughts before bed. The interface adjusts to darker tones at night, which is easy on the eyes. Zero downloads, minimal ads, and no complicated menus. Definitely worth a try if you want a calm pre-sleep routine.