Sound test:
Hold Select at the title screen until the sound test screen appears.
Level select:
Hold Select after the "Mission Summary" screen. Then, press one of the following controller combinations when the screen turns black.
| Level
| Mission |
| 1-2 | II
|
| 1-3 | II, II
|
| 1-4 | II three times
|
| 2-1 | I
|
| 2-2 | I, II
|
| 2-3 | I, II, II
|
| 2-4 | I, II three times
|
| 3-1 | I, I
|
| 3-2 | I, I, II
|
| 3-3 | I, I, II, II
|
| 3-4 | I, I, II three times
|
| 4-1 | I three times
|
| 4-2 | I three times, II
|
| 4-3 | I three times, II, II
|
| 4-4 | I three times, II three times
|
