>>>>Brain (c) is a simple free game distributed under GNU GPL v2 license designed to improve your memory and the ability to relate items.

It consists of a matrix (one or several tables) that contains repeated numbers. The user has to pair these numbers. It allows matrix of up to four dimensions (for example, t, x, y & z). After setting the size of every dimension, the user can ask the program to show the item (number) that occupies a position, to pair one item with another, etc.

There are many similar games (pairing games), but this one is special because:

The matrix is especially big; it has four dimensions, this means that every item in the matrix is determined by four numbers. In addition, the number of items is really big.
The game does not show the matrix (the tables) in the screen, so users has to build it inside their mind.
The items in the matrix are numbers; this reduces the importance of visual memory when playing.

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