This variation is for both NTSC and PAL as there is no difference between the two on the Intellivision Video Game Console.
This is the Medium Level of Tron Maze-A-Tron. Button 2 must be pressed to play this level of the game. The controller must be shown on the video while button 2 is pressed which signifies the Medium Level has been chosen. The game chosen level does not show up on screen so the controller must be seen on the video when button 2 for the Medium Level is picked.