checked-no =>Stage Select: Press R R U D [R] [L] [START] on the option screen. =>Extra lives/Continues: Press and hold D+[L]+[R]+U on the option screen. =>Sound Test: Press [L] [R] [L]x2 [R] on the option screen. =>Secret Credits: As the Beam Software name is being drawn on the screen, hold [L]+[R] and press B. =>Turbo Mode: Highlight "One Player" and press CNTRL I: L R L U [R]x2. =>More Lives: Highlight "Two Players" and press CNTRL I: [L] [R] U. =>Fight No Enemies: Use the Circuit Select code, choose a circuit. Now, if you hold down [SELECT] while entering a room, no enemies will appear in it. You can do this for some rooms and not others, which allows you to skip Boss rooms, or difficult ones. Once you have 10 keys, you can use this to get to the Pleasuredome pretty easily. =>Secret Rooms: * In TOTAL CARNAGE room in Arena 1, kill off ALL the enemies and exit to the right. * In BUFFALO HERD NEARBY! in Arena 2, clear the room and exit right. * In SECRET ROOMS NEARBY! in Arena 3, clear the room and exit right. * In Arena 3, move 2 rooms to the right of COBRA DEATH, and you will reach a room called either YOU HAVE ENOUGH KEYS! or NOT ENOUGH KEYS! (depending on whether or not you have collected at least 10 keys). If you have enough, clear the room and exit through the lower exit, and welcome to the PLEASURE DOME! =>Special Speed Mode: In each of the three secret rooms, the Pleasure Dome, and in the M.C. Boss room there will appear a ? mark. Collect all 5 and you will get a special ending and the game will restart at a higher level of difficulty.