Game 5 of 5 · Logic
Lights Out Lab
Flip the switches. Turn every light off.
Tap a switch and it flips a shape of lights. Turn every light off to clear the lab. The shape changes as you go, from a two-light domino to a chess knight's jump. No timer, no fail state.
- 40 hand-tuned starter labs
- New switch shapes as you go
- Endless generated waves
- Undo and restart are always free



Support
Questions, bugs or ideas: email support@karambola.app. Please include your phone model and the lab number.
Your progress
There is no account. Your progress and settings are saved on your device only, and nothing is sent to us. Deleting the app deletes them, and we can't restore them. Settings → Reset progress starts over.
Ads
Lights Out Lab never shows an ad you didn't ask for: no banners, no pop-ups between labs. Stuck? You can unlock a hint by watching a short ad. Undo and Restart are always free.
Privacy choices
Where the law requires it, the game asks for your ad choices on first launch. To change them later, open Settings in the game and tap Privacy choices. Read the full privacy policy and terms of use.
Settings
Sound, Vibration, High-contrast lights, Reduce motion.
Delete your data
We don't hold any data about you, so there is nothing to delete on our side. Uninstall the app to remove everything stored on your device. To reset your advertising ID, see the privacy policy.