checked-yes =>Stage Select: On the Press Start screen, press L U R D U R L D and then press one of the following: U - Stage 2 D - Stage 4 [SELECT] - Stage 6 L - Stage 3 R - Stage 5 B - Stage 7 =>Invincibility: On the title screen, press A A U B B D A B [START]. During the game, press [START]x2 to pause and unpause and receive full weapons. =>End Of Game: On the Press Start screen, press A A U B B D A B B [START].