The rules are set up so that you need to quickly manually plunge a ball during Rescue the Princess multiball. If you leave a ball on the switch in the shooter lane, the bottle will drift towards the genie faster. So you gotta try to keep the balls from draining during the Rescue the Princess genie battle, and if you do let a ball or two drain, you gotta take a hand off a flipper button and plunge that ball ASAP. It adds to the frenetic fun that is the genie battle, so adding an autoplunger would make you lose that key TOTAN experience.

Oh yeah, I'm in for a Banzai Run remake.