Cool concept. Had a couple problems like moving forward when big but with some work would be really fun!

The game fits the theme pretty well.  But there were some issues. Chris mentioned one of them, like when you get to a certain size you cant really roll forwards. Also I don't know if the dynamic toggle is just for debug or if its a mechanic of the game, but doesnt it kind of defeat the point of being dynamic if I can get to a size and then just stop myself from growing or shrinking?  But then I suppose jumping between walls would shrink the player too much, but then again you could just add snow to the top of walls. The addition of enemies boosts the gameplay as there is an added risk. But sometimes the enemies would fling themselves across the map, idk why. Rolling up the ramps was sometimes a struggle so I have to jump to get to the top, idk if that is an intended feature with the larger sizes,  but even sometimes when im a tiny snowball the ramp didnt want me up it.

Nice idea for the scale theme, and some good puzzles making use of the mechanics. Controls could do with some refinement as they make some of the platforming sections much harder than they need to be. Sometimes it seemed that I couldn't roll forwards, only sideways, which made judging jumps very awkward. Also the camera was super sensitive for me - if you use mouse look include a sensitivity setting. I'm looking forward to playing more levels in the final submission.