Lanternward is a logic puzzle in the classic Akari ("Light Up") family: a lantern lights its whole row and column until a rooftop stops it, numbered roofs say how many lanterns stand beside them, and no lantern may shine on another. Every puzzle has exactly one solution and can be solved by reasoning alone.

No guessing, ever. • 300 graded puzzles across 10 districts, 6×6 to 14×14, then Endless Night • A new daily puzzle every day • Difficulty measured by the deduction it needs, not by a label • Four stars by time against each level's target, your best times, never a countdown • Stuck?

A hint places one correct lantern and "Show my mistake" marks the wrong ones. Each costs one star, nothing else • Colour-blind palette • Progress is saved in this browser Free to play.

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