I'm trying to figure out what the genre of games is called in which the only (or primary) control is to hold a single down a button to move the vehicle/character up and when letting go of the button, you float or move down. You generally try to avoid obstacles by moving above or below them.
Examples of this genre would be The Helicopter Game, or Jetpack Joyride. There are no doubt many others that you may have run across over time as well. I just didn't know if there was a genre name for them. I've seen things like 'cave flyer' or 'dodging', didn't know if there was anything better or official to classify them.