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Light every tile. Each move changes its direct neighbours too.

Hints are free and can be used at any time.

Settings

Changing the board size starts a new puzzle.

Lumen guide

PERSONAL BEST

Results without help and assisted results are ranked separately.

The last 50 completed game logs, including every hint, are kept on this device for future score integration.

How to play

Goal: make every tile glow. Selecting a tile switches it and the tiles directly above, below, left and right. Diagonal tiles do not change.

If you are unsure, choose “Show a helpful move”. The star marks a tile to select; the outlined tiles show everything that will change.

Use Tab to reach the grid, the arrow keys to move between tiles, and Enter or Space to select one.

Controls

New game: Create a new solvable puzzle.

Sound on: Tap to mute.

Sound off: Tap to enable sound.

Settings: Choose the grid size, sound and reduced motion.

NEW PUZZLE

A fresh pattern?

Your current puzzle will end. Your personal bests will stay safe.

EVERY LIGHT IS ON

Beautifully bright.

FIRST STEPS

How the lights move

  1. Your goal is simple: make every tile glow.
  2. Select one tile and it changes together with its direct neighbours—the cross shown above.
  3. Stuck? “Show a helpful move” marks exactly where to select next.