In need of stimulation? Solve the puzzles of ON/OFF and turn ON your brain! But beware! Our puzzles are very tricky and finish the whole game will be extremely challenging!

What’s New

Version 2.1

Minor fixes + 64-bit

Ratings and Reviews

5.0 out of 5
3 Ratings
3 Ratings
runonthespot ,

Picked up again after ages

Remembered this from ages ago and picked it up again- fantastic and underrated little gem for puzzle lovers

nicky name nickname ,

Perfectly addictive!

This game is nicely designed and has smooth, nicely addictive gameplay! The levels are colourful and clever, and give you a great sense of achievement when completed. This is my favourite puzzle game on the AppStore I think! People moan about having to pay for more levels, but there are no ads, even before paying, and you have got to give them something in return for such a fantastic game. - trisnpod

rlamacraft ,

Good, but…

Very good concept, lovely minimalist if design and a very clean set of colours that make a very enjoyable gameplay, however, with only 40 levels without unlocking more with in-app purchases it feels like a lite version of a full app. I would have preferred a lite app with those 20 levels and another app that unlocks all levels for no more than £2.

But, worth a play, even if you do complete all of the standard levels in under 2 hours.


1Button SARL
7.5 MB

Requires iOS 8.0 or later. Compatible with iPhone, iPad and iPod touch.


English, French

Age Rating
Rated 4+
© 1Button 2012
In-App Purchases
  1. 5-Key Pack £0.99


  • Game Center

    Challenge friends and check leaderboards and achievements.

  • Family Sharing

    Up to six family members will be able to use this app with Family Sharing enabled.

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