checked-no =>Sound Test: On the Continue screen, repeatedly rotate the PAD counterclockwise until you enter the sound test. In the sound test, enter 00 to return to the continue screen, or try holding <2> to make additional sounds available. =>Extra Continues: On the Continue screen, repeatedly rotate the PAD clockwise to earn additional continues; up to 12 can be earned this way. If you've earned 12 and need more, enter the Sound Test menu (as mentioned above). In the Sound Test, hold <2> and use R to reach sound 62. Play sound 62 three times, then exit the sound test. You can now collect up to an additional 30 continues using the earlier method; if you need more, return to the Sound Test and repeat the process. =>Invincibility: Before booting up the game, hold CNTRL I: L+R and CNTRL II: U+L+<1>. Boot up the game while holding these down and wait for the R-Type logo to finish flashing, and then release the buttons. =>Bonus Level: In Round 4, look for two blank areas at the top of the screen (one of these is at the beginning of the level). Fly up into the blank area and then back into the left wall and you'll enter a special bonus level.