The object of Mindgame is to guess the colours of a row of pegs. By default, you have to guess the colours of four pegs in six attempts. This is configurable, allowing peg row lengths between three and six, as well as three through fifteen attempts. You make your selections for each position in the row by clicking on one of the large pegs appearing on the left side of the screen. You may undo a selection at any point before the row is completed, by clicking anywhere on the screen with the right mouse button.