This 50 minute screencast recording & narration covers making a Ghostbusters-themed game in the Scratch programming environment.
Scratch is a free programming educational tool from MIT for kids and teens. It can be used in the browser or downloaded to your Windows, Mac, or Linux PC. https://scratch.mit.edu/
In this game, the player controls a ghostbuster character who must capture all the ghosts on the screen. The viewer can follow along as the narrator puts the program together one code block at a time from scratch.
You can play this game yourself at https://scratch.mit.edu/projects/11931783/#editor
This video and others can be found at the http://inventwithscratch.com website.