The game does make you think but has a major flaw that brings everything down. Ads, and before you think I'm joking. Almost every click of a button leads to an ad. Want to restart the puzzle? Ad. Want to go back to the home screen? Ad. I'm honestly there isn't an ad to get into settings. This comes off as very money hungry as you can buy no ads for 5 dollars. I shouldn't have to spend 5 dollars so that I can go back to the home screen. Fixing when the ads come up, will fix this rating.