offlinewebtools.com browser-local workbench

Lights Out

Switch off every light by toggling cells and their neighbors in this classic logic puzzle.

Shipped

Browser local

Moves: 0 Turn everything dark.

What this tool does

Lights Out helps you switch off every light by toggling cells and their neighbors in this classic logic puzzle.

What you get

Lights Out produces a direct output in this page and keeps all processing on your device, with nothing uploaded to our servers.

Report a bug

If this tool misbehaves, share a quick summary so we can investigate. We include the tool URL automatically—no need to copy and paste.