Regarding the high number of five-star ratings, there's a common pattern in this style of mobile game to optimize for ratings. After the tutorial introduces the

Regarding the high number of five-star ratings, there's a common pattern in this style of mobile game to optimize for ratings. After the tutorial introduces the mechanics, and after a bit of time spent in the main game, it prompts the user to go to the app store and give a rating. Shortly after this prompt is when the game starts hitting the player hard for IAPs. I haven't played this new Dungeon Keeper, but EA's Plants vs Zombies 2 followed this model to a T at release, popping the rating prompt near the end of the first world, but before letting the player know that they would need to replay the entire world repeatedly in order to pass the paywall for free.