Level select:
To enable the level select, hold down button 2 on the title screen and press Up, Up, Down, Down, Right, Right, Left, Left.
Marvinvaders Mini-game:
To play the “Marvinvaders2 mini-game, hold down the button 2 on the title screen and press Up, Right, Down, Left, Up, Down, Left, Right.
How to defeat all boss:
Boss 1:
Go to the second level, shoot, avoid projectiles, jump and go down.
Again more times.Boss 2:
Shoot the tentaculs until the bandage appear.
Don’t forget to avoid fish-bones going up, to left and right.Boss 3:
Go up, stay on the border and shoot jumping to avoid missiles and bombs fragments.Boss 4:
Go up as you can, shoot until the seal move buttock to shoot the snow ball.
Go down 2 levels back, center and go up again.
Beware of stalactites falling.Boss 5:
Shoot on the string of the bell always moving from the left to the right to avoid the bird and the spider.Boss 6:
You must shoot the head.
The most difficult is to destroy the arrows (2 shoots for 1).
Nudalities:
At the game over screen, hold the button 2, and input the following codes to show special animations. These codes must be entered before Marvin stops walking across the screen.Animality 1 – Up, Right, Down, and Left.
Animality 2 – Up, Left, Down, and Right.
Fatality – Down, Right, Left, Left
Nudality 1 – Right, Right, Down, Left, Up, and Up.
Nudality 2 – Left, Left, Down, Right, Up, and Up.
Nudality 3 – Right, Left, Right, Left, Down, and Up.
Nudality 4 – Left, Right, Left, Right, Down, and Up.
Nudality 5 – Down, Down, Right, Up, Up, and Left.