One million player have chosen Paper Train (HD), and the long waited new levels have arrived! PT: Master Edition has been developed with a lot of love and experience to entertain both the current and the future Paper Train fans! Boost button is a new feature - while you are pushing it, the game runs faster and you get extra points. The rules are simple: control railway traffic without crashing any trains. Features: - 100 maps (the first 10 is free) - 4 difficulty levels - boost button - beautiful hand-drawn graphics - you can play your own iPod music - Game Center support - universal app (supports iPad/iPhone/iPod) - retina display support - multitasking support Source: The Game Website.