Great game, BIG GLITCH ON IPAD

Superb game--if only it was working properly. The game play itself is fine--until you solve a puzzle. Then, the screen with the buttons to go to the next puzzle comes up--but all the buttons are non-functional. If you completely close the app, then re-open it, it does allow you to advance to the next puzzle, so it still does maintain essential functionality--but man, what a hassle. Note that I only run into this on my iPad Air 2--on my iPhone 5, the app works just fine.

If this gets fixed, the review jumps to an easy 5 star--its superb!!

u2bigg about Trainyard, v1.66