I'm wondering if there has ever been a machine where you hit a captive ball(s) into the pop bumpers? This area would be otherwise not be accessible. While the captive ball(s) is in the pop bumpers the value of the playfield is doubled (or multiplied by the number of balls). I was thinking about this because for the most part I enjoy pop bumpers, but in most games they are used in a standard layout that results in little benefit outside of temporary parking a ball or in modes that require multiple switch hits. I'm just wondering if this already exists.