This is a game in which you have to play against the clock. You're surrounded by darkness and the only way to escape is watching the sound. This is the complex plot behind Dark Echo.
The rebound of sound will tell you how to escape
You have to find the way to escape guided by the sound rebounding on obstacles you can't see. This rebound will reveal the shape of everything that surrounds you and will guide you in your escape. If you don't manage to do so, you'll be gobbled up by the evilness hidden in the dark.
A game about solving puzzles... that's really scary.
There are 80 levels that you'll have to complete in the dark and that will definitely not leave you cold. A game full of fear and tension.