Very simple but original game! I feel like rolling snowballs should have been done with just a single left click, because sometimes throwing snowballs wouldn't work because the game thought I was going to double click (you could've even made it so the longer you held it the bigger the snowball would get!) The music got annoying quickly, however I get what you were going for with it, since the short loop matched with every second increment. You could've found a full song that instead had either its BPM or a single percussion instrument in it match the seconds instead.
(I also found a glitch where if you roll multiple snowballs, throwing one causes all the others to go in the same direction instead of staying put).