The game has a pretty interesting concept and atmosphere, but it's a bit unintuitive to explore at first. Unfortunately I got stuck in a loop trying to leave through the front door of the house with the golden key :(
The loop is intented but you should not get stuck. It should be a one way loop, where you can walk infinitly in one direction but if you go back you will soon find yourself in the room you came from.
If a door does not have a valid exit on one key it will bring you back to this special room.
