Akari place bulbs, light the whole board
Play first. Daily, Practice and Campaign stay one tap away; archives, display controls, records and the specialist deduction lab stay below the board.
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Light every open cell, keep bulbs out of each other’s sight, and satisfy every numbered wall.
Board fully lit
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More · archive, custom Practice, campaign, display & local record
Daily archive
Every date maps to one verified 7×7, 8×8 or 10×10 board.
Practice
105 exact-unique sources across seven sizes, each with eight deterministic symmetry variants.
Campaign
The existing 90-level 5×5–7×7 progression remains intact.
Assist & display
Live status and auto-X only enforce direct rules. Hint and Check mark the run Assisted.
Local record
Light every open cell
A bulb lights along its row and column until a black wall stops the beam.
Bulbs never see each other
Any uninterrupted corridor can contain at most one bulb.
Numbered walls are exact
A numbered wall must touch exactly that many bulbs orthogonally.
Fit, zoom and pan
Practice scales from 5×5 through 14×14. Fit the whole board or zoom in and pan without changing the puzzle.
Reason first, exact continuation second
Hints prefer named Akari deductions, then test the current state for a forced next mark.
Autosave, streaks and best times stay on device
No account is required. Leaving the tab pauses time and preserves the exact board.