You can slap speedruns on anything and I will enjoy it. I beat the author time in several levels.
I enjoyed this entry. The idea of spinning and flinging a ball to get places is very Thor's Hammer ish. Unfortunately, while charging the spin is fundamental to moving, the spin itself didn't feel integral to the gameplay. You could just as easily have made the player pump up a balloon and blast forward on that, and it would have been the same. If I had to time the release, that would have fit the theme better, but it also might have been annoying haha.
The physics felt a little off, and the platforming sections without the ball were a little boring. It could use some polish. But like I said, throw a timer on it and it's very fun, wonky physics and all. Once you get a feel for it, the controls are good enough to speedrun, and the presentation is very simple and clean.
Nice job!