A little robot is standing on a board that consists of squares. You need to give him instructions so he can step by step accomplish a specified task. Tasks are being pulled from a bar at the lower bottom of the display into the action box at the top right. Once you are satisfied that the sequence is right, you push the start button and the robot begins to move across the board, based on your commands. This can include anything from walking across the board, changing direction, coloring fields, to turning on lights.
During the 50 levels the degree of difficulty increases and you have to develop subprograms. This is one of the reasons, why the game is recommended for students that have to, or want to, learn about programming. Should you get stuck, you simply push the help button. If you are successful, you may collect of up to 20 stars.