Won't open? – Rhythm Racer 2 Review

Just taking up space. I loved the first version of Rhythm Racer, but it won't open on my older iPad mini, my iPhone 6+, or my iPhone 5. I just downloaded Rhythm Racer 2, and it won't open either. Like one review said, the developer must have abandoned it
Review by bbobbzz on Rhythm Racer 2.