You can test your powers of observation, and for one thing you can train it easily and simply in the Find A Difference game. You will have a great time and not notice how your instincts will sharpen and become more subtle. At each level, you must find the differences between the drawings located one above the other. At the same time, a certain time limit is allotted for the search, and the number of differences will change each time at a new level. Pictures at first will be simple with a small number of items. But the further they go, the more difficult they become. There will be a lot of items and they will become smaller in Find A Difference.