The art and audio is great but I'm not crazy about the game itself. As another person said, the score is very forgiving, and I understand that the jump is supposed to be less useful when the snowball is larger, but it becomes useless very quick. I felt like the jump button didn't do anything most of the time I pressed it. Additionally I'm not a fan of the aspect ratio, I don't know if this is what you were going for but it's a bit difficult when you can't see many of the obstacles in front of you due to the assets not having much screen space with how the game is laid out and the speed of the snowball at times.
Again, the game presentation wise looks great, but I feel a couple extra hours of work could turn this into a more serviceable game. A few extra hours is something everyone could use in a jam though, I suppose, so for what's on offer here it's good. I'd recommend tweaking the gameplay a bit post-jam though.