Nightlit
Nightlit is a free daily 5x5 light-tile puzzle in the Lights Out family, played in the browser with no sign-up. Tapping a tile flips it and nearby tiles according to that day's pattern; the goal is to turn the whole board gold. Everyone gets the same board each day, with a new one at midnight, plus a par to beat, a streak to keep, an emoji share grid, endless mode, an interactive tutorial and a Spanish version.