I saw Snow being shown off at Gamescom back in 2014. Built in the Crytek engine it looked absolutely glorious and two years on it's only got better.
Aiming to be something of a simulator, Snow gives you a huge mountainous region to explore as you like. Cross country ski across its range of valleys and slopes or jump to the top of a mountain and race your way down to the towns nestled below.
It's just appeared in Steam Early Access as a free-to-play game. Over the coming months it will gain more content but the plan is to remain a free to play game so there's nothing to put you off giving it a quick dry run.