During play, the screen predominantly scrolls vertically, but there is some horizontal leeway as is common in games of this genre.
In addition the two screens could lock and scroll up or down together.
The whole screen will scroll if you press any button until it goes all the way to the girls' school.
For example, one player lagging behind could cause problems for his partner, as the screen will not scroll onward.
In other games or stages, the screen will only scroll forwards, not backwards, so that once a stage has been passed it can no longer be visited.
As Charlie anxiously scrolls down the screen, a pyramid of pictures rolls into place.
The screen frequently scrolls as the player explores the level, although many games scroll through the level automatically to push the player forward.
One of the innovative features of this game is that there are no walls in the stages to corner players; instead, the screen can scroll indefinitely.
The screen will often scroll horizontally or even diagonally, depending on the course the protagonist must take to reach the demon leader.
In each level, the screen will scroll constantly in one direction.