Tidy Library - free online memory game
The initial image shows a tidy book shelf with different books of varying sizes and colors and other objects kept in it.
When you start the game some of the books and objects are removed from the shelf. You are supposed to guess or remember their original location and put them back. The easy part in it is that, a book or an object will only go to its original location, or else it will bounce back, so there is plenty of chances for you to try and err. In the beginning this game may look daunting in the first glance, but is pretty simple and easy and fun to play. Kids should do it much faster if they replay this game after the first time.
You can start playing this game by visiting its webpage on this link