I've stumbled across a game called Osmos- It's quite brilliant and is what the developers claim, an ambient game.
It's set in a kind of space-like void, and the upshot of it is that you are this kind of blob, and have to assimilate other blobs,
which increase your size and power. It's sounds very simple and dumb, but is amazingly addictive and gets very mind-bendingly difficult.
But best of all is the soundtrack, which is beautiful ambient music by people like loscil and others- It's completely hypnotic and cool.
It definitely gave me a feeling that developers in other areas are listening to ambient music and using it to enhance their art.
It's won bag loads of awards too.
It only costs about $10, and you can download it on steam, which is where I got it from. have a look, or buy it here:http://www.hemispheregames.com/osmos/