Concentration is a game of memory that should be familiar to most. In this version, a grid of 49 squares contains 24 pairs of images. The center square is 'free' and will clear as soon as it is clicked. When the game starts, all the squares are covered, and play begins by clicking on a square. Each time a square is clicked, it will show the image it contains. If no other images are showing, then the image remains. When a second square is clicked, its image is displayed and if it matches the other image showing, both will be cleared from the board, and the score will be incremented. If it does not match, then the next square clicked will hide these two images again. Play continues until the board is cleared.

There are three types of games that can be played at one of three different difficulty levels. Theses can be selected using the Action Menu, and are described below.

Casual - This game involves clearing the board once by matching all of the images. The time starts at zero and counts up, and the score is updated every time a pair is matched based on how quickly it is matched. Earlier matches count much more than later ones.

Beat the Clock - This game requires that the board be cleared within a specific time. If it is cleared in time, another board is set up and the timer is reset. The game continues until the time runs out before a board is cleared. The score is updated every time a pair is matched based on how many pairs have been matched on that board as well as the difficulty level. In addition to the score, the difficulty level also controls the starting time for each new board.

Shuffle - This game is based on the Casual game, with a twist. After a period of time, based on the difficulty level, all of the remaining images on the board are shuffled to new locations. Scoring is the same as the casual game.

Game timers and colors for the different game components can be modified to customize the way it looks and plays. Concentration is shareware, and the until it is registered all games will time-out after 1 minute.