Mad Stalker Game System: NEC Turbo Duo Cheat Category: Cheat Game Company: Unknown Game Category: Unknown Hint, Cheat, Walkthrough:   Mad Stalker =========== Cheat mode: Enter the options screen and set "Level" to "Hard", "SE" to "07", and "BGM" to "13". Then, highlight the "Level" option and press I. Level select and "Extra VS Mode" options will be available. The "Extra VS Mode" allows the game to be played in story mode using any mecha.