Light the City
Akari
Place bulbs so every open square is lit, no bulbs see one another, and every numbered wall has exactly that many neighboring bulbs. Each solve illuminates another building.
Campaign
The city at night
0 of 25 buildings lit
Light the first building to begin the skyline.
Current building
Old Quarter puzzle 1 of 25
Building illuminated! Another light has joined the skyline.
Tap an open square to cycle bulb → × → empty. A bulb shines horizontally and vertically until a wall blocks it. Read the full rules.
How to play
Light every open square
Bulbs illuminate their own square and every visible square in the same row and column. Two bulbs may not shine at each other.
Numbered walls
A wall number tells you exactly how many bulbs touch it above, below, left, or right. Diagonal bulbs do not count.
Winning
The puzzle is complete when every open square is lit, every number is satisfied, and no bulbs conflict.