Journal29: Interactive Book Game
A Book by Dimitris Chassapakis
A book recommendation by Kevin Kolb
Journal29 will keep you occupied for hours. I kept it on the coffee table along with a pencil. I found myself picking it up instead of my cell phone a bunch.
Of course you’ll still need your phone to check your answers. At the end of each puzzle you scan the QR code to check and see if you got the puzzle correct.