You are a captured citizen who wakes up in a pod, stranded in unknown snowy surroundings, just after you were lost from a "combine-dropship-pod-container". You discover a secret underground facility that are infested by headcrab-zombies. Later you find out that your'e not alone in the facility: A mad group of dangerous humans with weapons are inhabiting the facility too. Lost in the snow will include: notes, keys, puzzles and more.
It was pretty fun, a little hard for my taste but still a fun experience. Had a neat little story going on, though mostly left up to the imagination.