During the opening sequence when the fighters are in flight, press Up, C-Down, Left, C-Right, Down, C-Up, Right, C-Left, L, R, Z. If you entered the code correctly, you will hear a sound.
When "Press Start" appears on the opening screen, press C-Left, C-Down, C-Right, C-Up, C-Left, C-Right, C-Down. Then, a hidden F-15 with a female pilot (Mao Mao) can now be accessed.
Compete all bonus missions to access Spanky as a hidden pilot.
A new enemy plane will become available in deathmatch mode for each level completed in the game. A total of six enemy planes may be enabled.
At the plane selection screen, press R, in main game practice or boss attack modes. For death match mode, hold R while selecting one of the four default planes.
Before reaching one credit remaining, reset the game and continue from the menu that immediately follows the title screen. Then the game will resume with the same number of credits that were available when the current stage was started.
|Infinite Health||8027CFF5 00C8|
|Infinite Armor Plane||8127CFF4 44A0|
|Infinite Chaffs||8027E017 000A|
|Infinite Special Weapons||8027E4D2 0002|
|Always Have F-15J Eagle||8027CCEC 0010|
|Always Have X-29A A.T.D.||8027CCED 0020|
|Game Speed Change||8127CC00 ????|
|Gun Speed Select||8027CC01 00??|
|Ultra Fast Missile Recharge||8027E300 0001|
|Rocket Squad||8027E107 0001|
|Tomahawk Squad||8027E109 0001|
|Gun Select||8027E023 00??|
|Slow Game||8127CC00 0001|
|Quantity Digits to Accompany Weapon Modifier Codes|
|00 - Chaff|
01 - Jammings
02 - Air Mines
03 - Mahibishi
0A - 22mm BB Shot
0B - 22mm
0C - Hunai Shot
0D - Fireball
0E - Sabre
14 - Fire
15 - Tomahawk
16 - Ninja Glitch
17 - Fire Wave
1E - Rocket
1F - Phoenix
20 - Star
21 - Fire Arrow
28 - Ninjabeam