LightHouse: Logic Puzzle
Light every island. One lighthouse per row, one per column, one per island — and never two touching.
Four rules. Endless depth.
Every sea chart is a grid of coloured islands. Place exactly one lighthouse in each row, each column and each island, and never let two of them touch — not even at the corners. Some charts hide reefs, and a reef must be lit by a lighthouse within two cells of it.
No countdown, no energy bar. A wrong lighthouse goes dark and costs one of your lights; finish a chart clean and your streak grows. If you know Star Battle, sudoku or nonograms you already know how to start — and if you don't, the first ten levels teach you one rule at a time.
- 2000 hand-verified levelsEvery chart has exactly one solution and can be solved by reasoning alone — no guessing, ever.
- Hints that teachA hint shows the real deduction — observation, then consequence — instead of handing you the answer.
- Daily puzzle and free playA daily puzzle right on the home screen, with a weekly card and a result you can share, plus endless boards from 5×5 to 10×10.
- The weekly raceJoin a group of thirty players and climb the board with every puzzle you solve. The top three win hints and beacons.
- Achievements and leaderboardsSign in with Google Play Games to earn 14 achievements, climb the leaderboards and keep your progress on a new phone.
- No forced ads, plays offlineThe only ads are the ones you choose to watch. No account needed, no wifi needed.
Achievements are here.
Earn 14 achievements on Google Play Games — from your first light to a perfect week — and see where you stand on the leaderboards for puzzles solved and the best daily time. The route now runs to 2000 levels, and the daily puzzle waits right on the home screen.
LightHouse Daily
A new 8×8 puzzle every day at 00:00 UTC, the same board for everyone. Play it in your browser — your score, best time and streak stay on this device — or play it inside Reddit at r/LightHouseDaily, where every daily post has its own top 10 and players share their times in the comments.
