Hello there ! Thanks for your kind words <3 I'm quite a pinball junky too.
It was built with Game Maker Studio (1.4), that comes with a neat dedicated physics library; I've reiterated releasing some kind of (unfinished, of course) sequel to it for the Lowrezjam 23, sticking with GMS 7 years later so I guess this still feels good for me. Here it is if you're curious about it:
https://freaknarf.itch.io/grow-sid-pinball-64
Cheers!