Secret Mode & Level Select from Matt Penrose
First, enter the options screen. On the second controller, press LEFT, RIGHT, LEFT, RIGHT, UP, DOWN, L BUTTON, R BUTTON, START. “Secret Mode” should appear at the top of the screen. Exit back to the title screen, and press UP, DOWN, LEFT, RIGHT, L BUTTON, R BUTTON, A, Y, C, Z, B, X. You should now be able to select your level.Invincibility from Mach
Press start button to pause the game. Next press Up, Y, Left, A , Down, B, Right, C. If done correctly you’ll hear a bird whistle.
To kill yourself pause the game and press Left Button, A, Right Button, C, B. Then you should die.
Press pause during play and press down, R button, up L button, x, a, y, b, z, c, right, left. Unpause for full life