TL;DR: I built a little truck "game" to teach my son alphabets.
I started watching http://javascript30.com a couple of days ago. It's a series of 30 videos that uses vanilla Javascript to do amazing things.
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.
The game is written using the latest version of Javascript. It will not work in old browsers (sorry). It is not designed for tablets or phones, you need a keyboard to play this game.
Game: http://alphabetrace.itsybits.xyz/
Source: https://github.com/amjith/alphabet_race/
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.