Walk into a room and have a look around. Then close your eyes.

What can you remember? To recall the objects in the room you need your visual working memory.

We can also use this ability to detect change. As a child you may have played a game where you are shown a tray with items and then while you look away someone removed one or more of these items. Your ability to identify the missing items depended on your visual working memory.

The Snap -2 game tests this ability. The game requires you to maintain and update faces and shapes in your visual working memory.