checked-no =>Arcade Mode: From the title screen, choose the OPTION command, then highlight the Game Level. Now, rapidly and repeatedly press A until the Game Level changes to ARCADE. Press [START]x2 to begin. =>Weapon Select: After selecting the game mode on the options screen, press [START] to enter the weapon selection screen, then press R to enter the edit mode. Now, press X Y X X Y Y X Y and your weapons will be randomly selected. =>Long Demo: On the title screen, hold the A button. If you keep holding it, the demo will extend to the Boss. =>29 Ships: On title screen, press and hold L and press Ax3. Press [START] and you'll begin with 29 lives. =>Extra Credits: On the title screen, press X quickly and repeatedly and you will build up your total number of credits (about 8 or so). [START] the game before the title screen disappears, or the extra credits will be gone. =>Instant Power Up: In the game, press [START] to pause the game, then press U U D D [L] [R] [L] [R] B A and press [START] to unpause. You will gain lots of weapons when you continue playing. You receive one of these power-ups for each level, and can save unused ones for future levels. =>Self Destruct: Pause and press U U D D L R L R B A [START]... the old Konami code. =>Spread Shields: If you have the R. Option activated, collect enough power- ups so that the option selection is highlighted. Press and hold A and the R. Option will spread to cover a larger area. =>Reset Game: Hold [L]+[R]+[START]+[SELECT]. =>Bonus Stages: Bonus stages can be reached in levels 2,3,4,5, and 7. You need to fly into some special area after completing a requirement to access them. * Level 2: After passing the bubbles, in the final section of the stage before you reach the boss, fly into the first ship opening at the bottom of the screen. * Level 3: Destroy all the ground guns. At the end of the level, right before the last mountain, fly up close to the low ceiling of rock. * Level 4: With no filled power-up icons on the bottom of the screen, fly into the Moaia head in the middle of the set of three head near the end of the level. The proper head will be facing away from you. * Level 5: Before you reach the small passage leading to the two headed dragon, fly through the fire at the corner of the upside down volcano. * Level 7: After the four turrets, fly through the corner. You would normally fly diagonally upwards.