So I was inspired by Aladain's mention of Bride of Pinbot and played it again. I feel like what I mentioned about it earlier might have sounded overly negative, so I wanted to talk about what I loved about it too.
One of the things that sets apart one pinball machine from another is how well it makes you feel like you're making progress, and Bride of Pinball does that really well. Even though your main goal is to trigger the billion point shot as often as possible, it's a demanding and unforgiving process do to so. You have to activate Bride's mouth ("I can speak." "Oh, no." "Ha ha ha ha"), then activate both of her eyes ("I can see." "How do I look?" "You look good."), then trigger a transformation process in which she (spoiler alert) becomes human and starts to sing. Keep in mind, you can only trigger these transformations by going up the same ramp again and again, so the best strategy is to get that left ramp as often and steadily as you can. One of the best ways you can set yourself up for a ramp shot from the right flipper is by going through the middle aisle with the left flipper, setting you up for ∞ combos if you're steady enough.
Anyway, after she becomes human, if you can get both balls up the left ramp again, you trigger the Big Wheel. One of the possible rewards you receive is the "Billionaire's Club", which gives you a billion points if you can get through the middle aisle right now (a shot you've been repeatedly practicing, incidentally). It's a really well designed game in that even after you get good at accumulating a few billion point shots in a game, you're still trying to maximize your skill shot (whose multiplier goes up every time you trigger a transformation), and you still appreciate when you manage to activate the "extra ball" channel lights which balance out your inevitable left/right gutter death with a free life (and a skill shot multiplier upgrade). It's still cheap as hell (as all pinball machines generally are) in that you can awkwardly bounce yourself into an insta-death at any given moment, but you still somehow always feel like you're in control of your progress, and you always feel like you're being rewarded for your efforts.
It even gets away with the retro-sexist humor in the back-and-forth between Bride and PinBot. It probably wouldn't if it didn't have rock-solid gameplay to back it up, but it does. It's tremendously fun and super-engaging and it's a joy to play. I'm no pro by any means (today I got my second-highest score of 2,078,314,890, and my top score is a mere 4,262,598,290), but at the same time I almost feel more proud of the difference between my 262,598,290 score and my 78,314,890 than I do about the difference in billions. All-around excellent pinball machine.