Hi everyone, I'm developer of "Candy Zero". I make my 2019 first unique puzzle, it is easy to learn and have fun. It will take your time, train your brain. You can pre-order it now for free: https://itunes.apple.com/app/id1446672343 Also, If you want to try it now, please comment below to be our beta tester and then I will send you test flight link. Thank you. Screen shots: