TL;DR: I built a little truck "game" to teach my son alphabets.
I have only done the first two videos in the series. Based on what I learned in those two videos, I decided to write a small game. My son is a fan of trucks, so I cobbled together a truck race that teaches him alphabets.
My goal was to create an educational game that is entertaining but not addictive.
You can send me feedback about the game via twitter or email.