Choose the number of differences you wish to find out (3, 5 or 7) and then signal in the figure on the right the differences as you find them. Try to do it as fast as you can. In case you need, you can ask for a hint. When selected, the hint works by signaling, for 10 seconds, an area in the figure on the right, where the differences are. You can also ask for help, by doing this a grid will divide the image into sections. Have fun!
Note: Preferably should be played on devices with more than 7".