The UK has been hit by one of its coldest winters since 1963. Roads were in chaos as drivers simply did not know what to do when driving over the thick white stuff. People were seen walking around in hiking boots, with three scarf's on and a duffle coat to match and to add people were panic buying again, as they didn't know when they would be able to drive back to their local stores. The UK was in a snowy stand still and it was for couple of weeks before things returned to usual.
So what if one of your games had a sudden weather change and instead of open roads and paths all you could see is white with maybe a few deer tracks here and puppy tracks there?