Magic Square is a logic game. You start with a grid of 100 empty squares. Each time you tap on a square, a number from 1 to 100 is inserted in the square, and some asterisks appear to tell you where the next legal move is (this option can be turned off). The legal moves form a diamond shape around the last-tapped square, but of course if you have already inserted a number in a legal position, it is not available to you. Once you run out of empty, legal squares, your game is over. If you can successfully insert 100 numbers onto the grid, you have won. This trial version allows you to play the game 10 times. Magic Square is an interesting (and somewhat infuriating) game.