This is a rhythmic endless runner that features 3 levels. The first level is illustrates the first rhythm; the second level illustrates the second rhythm; and the third level randomly selects between the two rhythms when generating the next obstacle.

You can load each level with the corresponding Number Key on the keyboard (1 for level one,  2 for level two, and 3 for level three). You can also reset the current level by pressing Backspace (or Delete on Mac).