Mountain is to gaming what a fish in an aquarium is to pets: you can't pet or cuddle it but sometimes just watching it exist is reward enough. I picked this one up in a bundle or sale, and I have no regrets.

One of my favourite games. Not actually a game but a mountain flying in space simulator. Good graphic, sound and great idea. I usually leave it open on background for ambient sounds. My friends are jelous that I'm such a high-level alpinist now.