Dance Dance Revolution: Mobius
There are six songs in the game each with different characteristics. This can be seen in the way they are rated in the following categories: stream, voltage, air, freeze and chaos. After each song the player will be graded from E (worst) to SS (best). To progress through the game the player has play the songs at varying difficulties (basic, difficult, expert). On basic steps are always on whole beats and rarely have double steps. Difficult has any combination of steps on whole beats and double steps are more common. Expert has frequent half steps that can be both on a whole or a half beat. It's possible to unlock dance powers by completing songs. These are special techniques that can be unleashed when the player has enough dance power.