Clean. Old school game with new polish, feels very nice to play! Enjoyed all 8 rounds.
If I could give some feedback, I think a lot of fun of pinball is the authentic "chaos feel" you get, the noises the lights the overstimulation. That's the one thing I feel like is missing.
I played it in full for a reason, it is very satisfying to play, I bet a lot of other pinball enjoyers will love it too :D Best of luck in the jam
Edit: Just saw your links, very cool man. Followed, can't wait to see more of your journey to greatness!