It's a great game, simple and satisfying. It has simple, yet pleasing graphics and progression rate. Unfortunately, the past two days, every time i would open the game, i would be greeted by a complete reset of my progress. Every single coin, diamond, upgrade, everything. It was weird that in ongoing games, the upgrades were still unlocked (but lvl 0). I want to give the game another try, but for now, it seems impossible (I didn't have my first save backed up, but others also didn't save).