Not bad
If you remove the ceiling sticking it'll even be great.
I like the "challenge of a 2d marble game but you control 2 marbles at the same time" concept. But I would wanna see the marbles interact more. Maybe to get to the other cliff you need to freeze one marble and climb on it with the other one. Maybe add the velocity accumulation while frozen (like in Zelda). Maybe at some point they go into two different parallel caves so it's harder to control them.
Idk, good stuff, I liked the physics of it. But the ceiling stick is from satan, remove it rn