Elementary school ystael spent a lot of time on Pinball Construction Set on the C64. I think I always turned the physics up to max speed minimum friction, so scoring on my tables was more about flailing and blind luck.
My favorite C64 game, though, was one I didn’t get to play often because I had to borrow it from a friend. (Didn’t know about cracking yet.) That was Ultimate Wizard. The platform physics were kind of terrible compared to Mario, but I loved the way each level was a tiny puzzle-maze, with different treasures moving different blocks when you grabbed them, and one magic spell - just one on each level, out of ten or so - to help you deal with the enemies. And my favorite thing in every game: a level editor! No, my levels weren’t good, they were awful. But I loved laying out the little bricks and skulls and fires anyway.