I think the idea of a snowball growing in size is a great one! I agree that with HandsomeLads, that this isn't really well communicated to the player. Also I didn't really feel in control of what was going on. I'm not even sure what my goal was - was my goal to reach the hiker, or is it to stay alive for as long as possible? I would've assumed it's to stay alive as long as possible, but then a distance metric would be the more efficient way of telling the player that instead of time. I hope this doesn't come across to negative, because I genuinely think you can make a lot out of the idea of a growing snowball. :) Congrats on the good work! :)