The main points have been already mentioned several times: good gameplay, challenging levels and a surprisingly detailed graphics. However, the level of difficulty for my taste is partially relatively high and there are some long series of levels with great obstacles. I'm not too experienced gamers, but if I ever have to skip individual sections over time (probably due to the delicate control) and only thus get ahead, the frustrated pretty. I do not pay € 5, then half the game to skip because of the level of difficulty. That's probably something for advanced users. The price is for me in the border area.
Varied storyline: 5/5 Graphics: 5/5 Control: 3/5 Claim curve: 1/5 Value for money: 2/5