The player is free to explore a grand manor house in search of your character's lost daughter. In VR, you can teleport to move around and interact with almost every item you see. You have a mobile phone equipped which guides you through the house and leaves hints to what challenges or puzzles lay ahead of you. While searching for your daughter you are being haunted by a demonic witch who is able to appear from anywhere at any time. There are some combat elements such as wielding an axe to chop down doors and creating flamethrowers by combining two items.
This article uses material from the Wikipedia article Don't Knock Twice, https://en.wikipedia.org/wiki/Don%27t_Knock_Twice_(video_game) which is released under the Creative Commons Attribution-Share-Alike License 3.0, https://creativecommons.org/licenses/by-sa/3.0/.