Have You Played? is an endless stream of game retrospectives. One a day, every day of the year, perhaps for all time.
Audio-only games like Papa Sangre have been spooking up pocket telephones a treat, but the idea of navigating by sound alone will always make me think of having a good old chuckle. The Blind Monk's Society [official site] is a free, silly Half-Life 2 mod from 2008, a black screen and some helpful audio direction. Should ravenous ravens ever devour my eyes, I'll listen carefully for a friendly Blind Monk.
There you are, alone in the wilderness, seeing nothing but black. Don't worry! Members of The Blind Monks will teach you how to navigate with your ears, guiding you around and filling your ears with silly voices. Then... unlikely events unfold as you stumble around, trying to find your way. It's short and funny and I liked it, okay. At the time I'd have mentioned Portal at about this point in a HYP? - it does have a song and all - but maybe The Stanley Parable warrants a mention now too, in that it's a funny HL2 thing and you do lots of walking. Those old stroll-o-gags. I'm not making a strong case here.
I won't say much about those things because it's only about 15 minutes long, and I wouldn't want to regurgitate punchlines to jokes you haven't heard.
You can download it from ModDB.