Not only is its iconography very nondescript and its buttons unintuitive — I never would have found the 100 - level
challenge mode, for instance, had I not randomly tapped what I at first thought was just a random illustration of a doorway on the single - player menu — but the English translation for the game (the game offers
Japanese and English translations) seems exceptionally flawed and low - effort due to being littered with grammatical errors and spelling mistakes, making the concept of the game difficult to understand for new players as well as navigate in
general.