There was also an audio only game that came out on Xbox live Indie Games within the first 2 years called "In The Pit". In it, you play a monster in a pit that cant see since the pit is always pitch black, and people get thrown in, and you track them down using the sounds in the game; like their splashing of the ankle deep water or their heartbeat. Even when you hit pause, there were no on screen prompts, as the game just read out the options. It was super cool.
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