Press start on options and go to password. Use the up and down arrows to spell out dlvtrkbbrd. Press start and start the game. At anytime in the game, except during pause, press select, a&b at the same time. You can move Turok around the screen by way of the d-pad. To reverse bird mode, press selct, a&b at the same time. If you are high up on the screen, you will fall to your death, so get as close above, (not below) the ground as possible.