The Backdoor Billion shot is a mode that not many people know about on Bride of Pinbot, and probably because it's exceptionally hard to do. I've looked around the internet and can't even find a picture or some video of it actually being achieved. I wanted to start this thread to see if anyone here has done it, and if not, perhaps see some people try.
I have my own BOP and have had it for about a month now. Every now and again I'll give the backdoor a try and see how far I get (get your minds out of the gutter!). Initially, from what I had read, I thought you had to do 51 consecutive shots to the heartbeat ramp, within around 4 seconds of each, to achieve the billion. As you can imagine, that sounds legitimately impossible... However, now that I've been playing for a while I've noticed some things and I actually think the Backdoor Billion is achievable now. Here's why:
You need to reach the 10 loop combo in order to get the Backdoor Billion (or so the theory goes). Loop combos are awarded first for 4 loops (4 consecutive shots, within about 4 seconds, of either the heartbeat ramp, left loop or right loop), and then loop combos go up by 1 from there. You can tell when you do a loop combo, the machine starts making lots of thundery noises and strobes the lights. So, for the 5 loop combo, you have to do another loop combo of 5 shots. Then for the 6 loop combo, do 6 shots, etc etc up to 10.
What I have found during my attempts, is that you do not need to chain loop combos in succession, nor do you need to do them on the same ball. Your loop combo progress carries over from ball to ball (and you can check where you are in the status when holding a flipper in). So, if you manage to do a 4 loop combo but then lose the ball, your next ball will start with you needing to do the 5 loop combo, not the 4.
But a 10 loop combo? Is it even possible? I think so, as I have successfully done 9 shots in a row up the heartbeat ramp a few times, so 10 must be achievable! I've also managed to progress to the 7 loop combo in the one game, so it's definitely possible to get the 10, just pretty damn hard.
Yes I could take off the glass and do it that way, but that sort of defeats the point. Many people complain that BOP is a one shot game. Well, if you own one or have access to one, here's another thing to shoot for and a hell of a challenge...