This game is simply capricious and is perfectly suited to bridge longer waiting times, for example in the train. A large amount of levels and modes offers plenty of variety and ensures a long-term motivation. The difficulty is initially very simple, so you will be very well introduced to the gameplay, but with increasing playing time it becomes more difficult, so it is never boring. From me, saying a clear recommendation, especially to people who are bored on long train rides or even need a little distraction in the university.