Anathema

Student project for HSE art and design school

Scream to walk. Be aware of the demon. If the demon saw you, turn the lights off immediately.  Walk down the corridors to find an altar and light it.
Settings are in the screen corner (left is for silence tuning, central is for minimum sound to walk tuning and right is for maximum sound level, make noise and press the button to set value) 
tap on the screen to create a light mark
Shine light into your screen — turn on the light
turn off your light source — switch the lights off