Once you have inserted your coin into the cabinet of Taito Corporation's 1990 fixed shooter arcade game Majestic Twelve: The Space Invaders Part IV, you shall proceed to the zone selection screen shown above, and have ten seconds to choose between World 1A and World 1B by pushing the joystick left and right, then pressing the Firing Button to confirm your choice; once you have cleared your chosen first world, you shall proceed to the first "Cattle Mutilation". After the stage is over, you will have ten seconds to choose between World 2A and World 2B if you chose World 1A at the start of the game, or World 2B and World 2C if you chose World 1B - and once you have cleared your chosen second world, you will have ten seconds to choose between World 3A and World 3B, if you chose World 2A, World 3B and World 3C if you chose World 2B and World 3C, or World 3D if you chose World 2C. Once you have cleared your chosen third world, you will proceed to the second "Cattle Mutilation"; after the stage is over, you will have ten seconds to choose between World 4A and World 4B. Once you have cleared your chosen fourth world, you will proceed to the third "Cattle Mutilation" - and, after the stage is over, you will proceed to World 5 (the question mark at the top of the map will change to a scaled-down version of the world background at this point). If, however, you are playing the US version of this game ("Super Space Invaders '91"), you have to play through all forty-five stages in sequential order.