Hi there!
I have been working on a couple of things including ROBLOX Verification (Similar to RoVer) using a code generated inside a game. Here are some photos below on this project.
The ROBLOX game sends a verification code along with their user id and profile picture. After the user does the command r!finish (code) the bot then checks for the code and saves it in storage for future use.
Have a great day!