Light Up! – Pencil Puzzle

LightUp! is a mobile app for enjoying the pencil puzzle known as “Museum” or “Akari.”

・Includes 100 original puzzles for beginners to advanced players
・Early puzzles are easy and quick; later puzzles increase in difficulty to challenge your logical, spatial, and hypothesis-thinking skills
・All puzzles are free to play
・Simple and intuitive controls – just tap on the screen
・No time limits, so you can think carefully at your own pace
・Perfect for brain training or killing time

Challenge LightUp! now and test your mental agility

【How to Play LightUp】
LightUp is a puzzle where the board represents a floor, and you place lamps to light up the entire board.

Goal:
Place lamps on white cells so that all rules are satisfied.

Lamp rules:
A lamp illuminates all cells in its row and column until it hits a black cell or the edge.
Lamps cannot illuminate each other.

Placement rules:
・Numbered cells must have exactly that many lamps in the adjacent horizontal and vertical white cells
・Lamps cannot illuminate each other
・All white cells must be lit