This 46 minute screencast recording & narration covers making a "Frog Hop" 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 frog who must hop from one lily pad to the next to cross a stream. 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/14106179/#editor
This video and others can be found at the http://inventwithscratch.com website.