Years ago I have created a memory game for my children to play while they were young. This is a typical memory game for children. The user has to click the rectangles to reveal the hidden pictures and if two of the pictures are matching they will disappear. He or she wins the game when all the pictures are cleared and the background image is usually displayed.
Now you can watch this game on YouTube: http://youtu.be/Qe3Zk4-Sby8