Classic
Pressing a square changes that square plus its available neighbors above, below, left, and right.
The Lights Are Ready.
A simple idea with thousands of challenges: choose a puzzle, press the lights, and find a way to turn every square OFF.
Classic · 4×4 · Game 1
Watch a minimum 4-move solution
All lights are ON
The demonstration repeats slowly to avoid flashing.
Pressing a square changes that square plus its available neighbors above, below, left, and right.
Pressing a square changes that square plus its available diagonal neighbors.
Pressing a square changes that square plus all available surrounding neighbors — horizontal, vertical, and diagonal.
Your Clear Every Light account keeps your game history, best results, points, and progress together under your permanent player ID.