There is a set of cards or cards each with an image placed in such a way that its front is not visible.
There are two tabs of each image. The game consists of finding pairs of equal images.
When you click on an image it is turned over. Two consecutive cards are chosen.
If they turn out to be the same they are removed from the board. If they are different they return to the original position.
The game ends when all pairs have been found.
There are several levels of difficulty given by the amount of images presented.
The mechanics of the game is simple however it requires memory to facilitate the proper placement of pairs of images.