Quoted from scarybeard:I'd like a machine that allowed you to choose your rules set at the beginning. Do you want standard 3 ball game? Or 3* minutes unlimited balls with a 10%** points loss every time you drain?
Batman forever has almost this exact ruleset. When you start a game you choose easy or regular. Easy is a 2 or 3 minute unlimited ball save, but no penalty for draining. Regular is a normal 3 ball game.