Robotech: The Macross Saga

Level select:
Press Up, Down, Up, Down, L, R, L, R at the ''Press Start'' screen. The sound of a chicken will confirm correct code entry.
Information in this section was contributed by joen_r.

Unlimited lives:
Press Right(3), Up(2), L(2) at the ''Press Start'' screen. The sound of a chicken will confirm correct code entry.
Information in this section was contributed by joen_r.

All characters:
Press Down(5), R(2) at the ''Press Start'' screen. The sound of a chicken will confirm correct code entry.
Information in this section was contributed by joen_r.

All upgrades at maximum:
Press Up, Right, Down, Left, R, L(3) at the ''Press Start'' screen. The sound of a chicken will confirm correct code entry.
Information in this section was contributed by joen_r.

Weapon upgrades always at maximum:
Go to the name entry screen. Enter any character in the first position of the name, followed by SDF1 for positions two through five.
Information in this section was contributed by joen_r.

Play as Max Sterling in Vermilion Squad:
Successfully complete the game as Max Sterling under the normal or advanced difficulty setting.

Play as Miriya S. in Female Power Armor:
Successfully complete the game as Miriya S. under the normal or advanced difficulty setting.

Play as Rich Hunter in Fanjet:
Successfully complete the game as Ben Dixon under the normal or advanced difficulty setting.

Play as Rich Hunter in Trainer Veritech:
Successfully complete the game as Rich Hunter under the normal or advanced difficulty setting.
Information in this section was contributed by Douglas Lum.

Play as Roy Fokker in F-203 Dragon II:
Successfully complete the game as Roy Fokker under the normal or advanced difficulty setting.
Information in this section was contributed by Douglas Lum.

Play as Lucky Duck:
Successfully complete the game with all five default characters under the normal or advanced difficulty setting.

Play as secret eleventh Pilot/Veritech:
Successfully complete the game with all five default and five secret pilots under the normal or advanced difficulty setting.
Information in this section was contributed by Douglas Lum.

Hint: Shoot and fire missiles simultaneously:
Hold B + A to shoot and fire missiles at the same time. This is useful against enemies and Bosses.
Information in this section was contributed by CBVicious.

Hint: Underground in level 2:
Go with your Guardian close to a big ship where you can walk with your Battloid. It will change your Guardian into a Battloid. The enemy ships cannot hit you.