A daily logic puzzle. Everyone gets the same board.
Place one light in every coloured region so that:
Tap a square to cycle it: empty → ✕ (your own note) → light. Use the ✕ marks to rule squares out as you reason — that is how the puzzle is meant to be solved.
Do I ever have to guess? No. Every daily puzzle is verified before it ships: it has exactly one solution, and that solution is always reachable by pure logic.
When is the next puzzle? At midnight, your local time.
I'm colour blind — can I play? Yes. Every region carries its own distinct shape as well as its own colour, so colour is never the only way to tell regions apart. The app also works fully with VoiceOver.
Does it work offline? Completely. Sunfleck never needs a connection — every puzzle is already inside the app.
Is everyone really solving the same board? Yes. The puzzle is chosen by the calendar date, so every player in the world sees the same one each day.
My streak or stats look wrong. Stats are stored only on your device. Email me and I will help.