offlinewebtools.com — free, watermark-free browser tools that stay on your device with nothing uploading to our servers

Lights Out

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

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.

Free to use, no watermarks, runs in your browser—nothing uploads to our servers

Moves: 0 Turn everything dark.

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.