I built a service that generates digital puzzles. It's like an escape room: you get a clue that leads you to another clue, and at the end of the chain you get to a prize (secret message).<p>It's very similar to CTFs, but less focused on security aspects.<p>Here's an example of a puzzle: <a href="https://imgur.com/a/FrB6uPM" rel="nofollow">https://imgur.com/a/FrB6uPM</a>