Water gets all the credit. When gaming companies want to show off new graphics technology, things tend to get wet; splashing waves that are only possible with the latest physics engine, or puddles that can reflect the world around them thanks to ray tracing. But there’s something special about snow. It might not be as technically impressive as water, but when it comes to creating a mood in a game, snow can be very powerful. And two recent releases — Moomintroll: Winter’s Warmth and Froggy Hates