WCW Nitro Codes -

Unlock single set of wrestlers:
Press R, L, C-Right, C-Left(2), C-Right, L, R, Z at the title screen. A sound will confirm correct code entry. Then, highlight a wrestler at the character selection screen and press C-Left, C-Right, L, R, C-Left, C-Right, L, R, Z. All three hidden wrestlers related to that wrestler will be unlocked.

Unlock all wrestlers:
Press C-Right(4), C-Left(4), R(4), L(4), Z at the title screen. A sound will confirm correct code entry. All forty-eight bonus wrestlers will be available for selection.

More rings:
Press C-Left, L, C-Right, R, C-Left, L, C-Right, R, Z at the title screen. A sound will confirm correct code entry. The Graveyard, Spaceship, Circus, Hive, Turbo, Wunderland, Boudoir, Hall of Mirrors, Reck Room, Psychodelic, Disco, Jungle, 1984, Quark, and Texas rings will now be selectable.

Ring select:
Press C-Right, R, C-Right, R, Z at the options screen. A sound will confirm correct code entry. Press Z to display the next ring in the series. To select the rings in reverse order, press C-Left, L, C-Left, L at the options screen, then press Z to display the previous ring in the series.

Swelling heads:
Press C-Left(7), L, Z at the options screen. A sound will confirm correct code entry. The heads of each wrestler will swell with each hit.

Big head mode:
Press C-Right(7), R, Z at the options screen. A sound will confirm correct code entry.

Giant head mode:
Press C-Right(4), C-Left, C-Right, C-Left, C-Right, Z at the options menu. A sound will confirm correct code entry.

Big heads, hands, feet:
Press R(7), C-Right, Z at the title screen. A sound will confirm correct code entry.

Big hands:
Press L(7), C-Left(17) at the mode selection screen.

Interference:
Press Z during a match. Another wrestler will appear and interfere with the match.

YMCA dance:
Begin a match in the Disco ring and press B to execute your character's taunt. Instead of the taunt, both wrestlers will do the YMCA dance.

Extra fast match:
Begin a match in the Turbo ring. Note: This is especially fun when two lighter wrestlers with moves such as the Frankensteiner are used, or in a Battle Royal match.