WCW NITRO
Playstation

Unlock Single Set of Wrestlers:
Press R2, L2, R1, L1, L1, R1, L2, R2, Select at the options screen. Then, highlight a wrestler at the character selection screen and press L1, R1, L2, R2, L1, R1, L2, R2, Select. All three hidden wrestlers related to that wrestler will be unlocked. 

Unlock All Wrestlers:
Press R1, R1, R1, R1, L1, L1, L1, L1, R2, R2, R2, R2, L2, L2, L2, L2. Select at the character selection screen. A sound will confirm correct code entry. All forty-eight bonus wrestlers will be available for selection. 

Ring Select:
Press R1, R2, R1, R2, Select at the options screen. A sound will confirm correct code entry. Press Select to display the next ring in the series. 

More Rings:
Press L1, L2, R1, R2, L1, L2, R1, R2, Select at the options screen. 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.

Hidden Rants:
Highlight any wrestler at the character selection screen. Press Circle to hear his comments.

YMCA Dance:
Select the Disco ring, and press L2. This also may be used to help win a match. Throw your opponent out of the ring and press L2 when he stands until time runs out. 

Swelling Heads:
Press L1, L1, L1, L1, L1, L1, L1, L2, Select 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 R1, R1, R1, R1, R1, R1, R1, R2, Select at the options screen. A sound will confirm correct code entry. 

Big Heads, Hands, and Feet:
Press R2, R2, R2, R2, R2, R2, R2, R1, Select at the options screen. A sound will confirm correct code entry. 

Special Ending:
Complete the game with one of the programmers for a special ending followed by FMV sequences for all the characters.

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

Game Shark Codes: 

Cheat Password
Enable Eric Bischoff 800633200001 
Enable Mean Gene 800633240001
Enable Jericho 800633280001
Enable Disco Inferno 8006332c0001
Enable Bobby The Brain 800633300001
Enable Miss Elizabeth  800633340001
Enable Sonny Onoo  800633380001
Enable Ultimo Dragon 8006333c0001
Enable Steve McMichael  800633400001
Enable Rey Mysterio Jr. 800633440001
Enable Jimmy Hart 800633480001
Enable Steven Regal 8006334c0001
Enable Jacquelyn 800633500001
Enable Madusa 800633540001
Enable Kimberly 800633580001
Enable Konnan 8006335c0001
Enable Hulkster 800633600001
Enable Pee Wee  800633640001
Enable Stinger  800633680001
Enable Greyling 8006336c0001
Enable Schiavone 800633700001
Enable Savage 800633740001
Enable Whitey 800633780001
Enable Buzz  8006337c0001
Enable Ivan 800633800001
Enable T.Rex 800633840001
Enable Frankensteiner 800633880001
Enable Bones 8006338c0001
Enable Santa Claws 800633900001
Enable Annie Mae 800633940001
Enable Dweeble 800633980001
Enable Ecto 8006339c0001
Enable Virtual Andy 800633a00001
Enable Cobra 800633a40001
Enable Reanimator 800633a80001
Enable Jaumbo 800633ac0001
Enable John 800633b00001
Enable FUSH 800633b40001
Enable Flyboy 800633b80001
Enable Tony The Rod  800633bc0001
Enable Eddie The Wire 800633c00001
Enable Donn 800633c40001
Enable Uncle Monkey 800633c80001
Enable Dudeman 800633cc0001
Enable Mike 800633d00001
Enable Steve 800633d40001
Enable Brian 800633d80001
Enable Superfan  800633dc0001