Glowplete: Akari Logic Puzzle

Solve Akari, also known as Light Up — a pure logic puzzle about placing lamps and illuminating every cell without letting two lamps see each other.

Place a lamp and watch its beam sweep across the board. Walls stop the light. Numbers tell you exactly how many lamps go in the cells directly above, below, or beside them. The catch: no two lamps can shine on each other.

Those simple rules create the kind of logic puzzle that rewards seeing one move ahead. Study the pattern, test a placement, catch a contradiction, and discover the one choice that makes the whole board click—and glow.

Glowplete includes 500 handcrafted puzzles, beginning with welcoming 4×4 boards and building toward intricate 10×10 challenges. Short early puzzles make the rules feel natural; later boards turn every beam and numbered wall into a web of deductions.

The best moment is always the same: one last lamp, one sudden insight, and a board that bursts into light.