Press Option 2 during game play while standing next to a monitor. Press Down, Up(5), Right. A sound will confirm correct code entry. Press Up or Down to change the level number that is displayed in the lower right corner of the screen. Pressing Up or Down will also toggle the score from "00000" to "00128" to indicate where the starting location within the level will be the beginning or the end. Press Option 2 to start game play at the indicated level.