So it's quite often suggested that you should scratch your own itch - Back around 2013 one of the things that really got me into programming was a game posted on Hacker News called RobotGame.
The game was quite simply where people could upload their own Python code which was the "brain" of your robot, then the site would place spawn your robot in an area with another player, and at the end of 100 turns, there was (hopefully) a winner.
Unfortunately, the game doesn't exist anymore (from what I can see), and at the time it has some issues with its security.
My plan is to bring back something similar, but with support for more than just Python, and hopefully inspire some future generations of coders, or just bring back some enjoyment to coding for people like myself.