Dark Echo [official website] is one of the most interesting examples of audio-as-gameplay that I’ve come across. In fact, if you’re not playing with headphones then you’re doing it wrong.

The idea is that you’re trapped in darkness and can use only sound to guide yourself through the environment. The result is an incredibly weird, minimalist project made up of footsteps, echo-location and abstract geometry of echoing sound, and couched in a plotline about a horrifying evil that devours sound and souls.

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