speed stars makes even improvements of a few fractions of a second a very desired target. This is a game where every modest step forward is a result of the player's diligent training.

space waves do not create problems in a simple repeating manner, but continually modify the level structure to keep players extremely concentrated. There are parts that need lightning fast reactions in tight places but there are other parts that require better control and a more consistent pace instead of merely dashing at top speed.