Could audio games actually be becoming...cool?!

Looking at the MIT IAP schedule for Comparative Media Studies, there is actually a game development course being offered on creating an audio game and hey, no programming experience required! Somehow I doubt that the engine for creating the games is accessible, however. But I'm all in favor of more people creating audio-only games, and I'm still a bit boggled that the folks at BoingBoing seemed to like the audio game Papa Sangre.