A bit too simplistic for me.
No additional levels beoynd the first?
No menu or information on what to do or expect.
No prevention of spawning a snowball directly on the wolf, it should check for a minimum size of the snowball to make the game interesting.
Finally while the snowballs scale I still finde it hard to see the theme clearly.
But smooth game otherwise, stille impressive what can be achieved in so few days :)