This time we're working with an application concept for business card game. It's and idea where there are mobile applications (both iOS and Android) and a website where each person who gets a business card must hack into. Like in the old sense, hacking means actually solving escape room-, puzzle-, riddle-type etc challenges in order to verify their access to information and contact behind the business card. The idea might seem simple, but there're some surprising catches on the way. As usual, in the end, all the codes will be available in GitHub (https://github.com/ljack/shiny-carnival). And if there's luck, their even might be couple episodes about the progress.