Place light bulbs on a grid to illuminate every square without bulbs shining on each other. Master hundreds of addictive logic puzzles with daily and weekly challenges.






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Place light bulbs on a grid to illuminate every square without bulbs shining on each other. Master hundreds of addictive logic puzzles with daily and weekly challenges.



This logic puzzle game transforms pencil-and-paper challenges into interactive brain teasers. Fit number combinations to clues using pure logic, with no mental arithmetic required. Enjoy over 150 free puzzles of varying difficulty, with built-in help and offline play.






Engage your mind with a logic puzzle game where you eliminate numbers to solve grid challenges. Offers multiple difficulty levels and customizable layouts. Enjoy a completely ad-free experience with additional puzzle packs available for purchase.