Place lighthouses on a grid. Light every cell. No two lighthouses may touch, not even diagonally. A free logic puzzle for iPhone with a fresh puzzle every day.
A brand-new puzzle every day at 12:00 AM PST, alternating between 8×8 and 9×9 grids. Build a streak and keep it alive.
An endless run against a 60-second clock. Pause anytime and pick up exactly where you left off. Each solve refills 20 seconds, up to the 60-second cap.
Hundreds of hand-rated puzzles across four difficulty tiers, from Noob 4 × 4s to Genius 7 × 7s.
Solve the daily, track your streak, and challenge your friends. See who can keep the longest streak alive.