A tetris-like game implemented with javascript and using only HTML.
https://drive.google.com/open?id=0B2fc28q8moGHMWFfQmlsZ0FCOHc
A more or less failed attempt to introduce my 10 year old son to computer programming nevertheless resulted in this tetris-like game. It only took a couple of hours to create and can possibly be used for educational purposes. Features CSS, javascript event handling and naturally the game logic.