Too Long; Didn't Read
Restcaperoom is an Interactive Exercise for Programmer Interviews. The challenge consists of an escape room serviced as a RESTful API. By sending HTTP requests to the API, you discover the room you are in from the response. The fastest team I saw going in was able to find the door to outside just after an hour. You can run the escape room yourself using the instructions provided on its GitHub repository. You could try to break the SHA256 encoded door keys to print them, but be aware, I would consider cheating!