Journey's soundtrack is a gorgeous orchestral opus; but did you notice all the sand sounds and flapping sounds? Sound designer Steve Johnson shared some of the creative process behind making the sound effects for Journey at Gamasutra, not unlike our piece on Diablo III's sound effect production.
All of the player's main robe movement sounds are from a military jacket that got me through Chicago winters -- a gift from a girlfriend. The standing-up-in-sand sound was that jacket half-buried in sand, lifted out of the sandbox. The sounds of walking through a sand waterfall are scoops of sand tossed at the jacket. For standing under a waterfall, it's the sound of sand poured on it.