By completing a level, the player unlocks the next and earns stars based on their performance. The better the time, the more stars are awarded. These stars can be used to unlock new skins and new worlds.
Though the first worlds may seem easy, as the levels progress, they also progress in difficulty, adding an array of new challenges. Whether it is moving platforms, dead ends, or disintegrating tiles, there are always some new and fresh obstacles ready to be mastered.