Mortal Kombat Trilogy cheats and cheat codes for Nintendo 64

Unlock bonus options (timer, aggressor, blood, and kombos):
Go to the KOmbat mode selection screen, hit Up + Start

Unlock Galaga mini game
Fight 100 2-player matches in a row

Unlock Pong game
Fight 50 2-player matches in a row.

Level Select
Highlight Sonya and hit Up + Start.

Unlock Human Smoke as playable character:
Press and hold Away, High Punch, High Kick, L, R 
before the screen says "Fight".

Unlock Motaro as playable character:
This trick only works on the Desert and Wastelands. Select anyone, 
but before the match starts press and hold Away + Low Kick + High Kick. 
When the match starts you will morph into Motaro.

Select a fighters randomly:
Highlight Saibot and press Up + Start.

Unlimited Credits
Hit Down, Down, Up, Up, Right, Right, Left, Left 
at the attract mode screen.

Unlock Shao Kahn as playable character:
Select the Rooftop stage, Pit 3, or Kahn's Kave. 
Before the match starts, hold Down + High Punch + Low Punch.

Unlock Khameleon as playable character:
Hit Right-C, Up-C, A, B, Down-C, Up-C, Right-C at the story line.

Kombat kodes:
Rotate a few times your control pad a in a clockwise direction, when 
the story screen comes up to bring up the Kombat Kode screen.
Kombat Kodes are entered using a button to control each of the six boxes. 
(P1 and P2 refer to player 1 and player 2.) 

Box1
P1 Low Punch 

Box2 
P1 Block 

Box3 
P1 Low Kick 

Box4 
P2 Low Punch 

Box5 
P2 Block 

Box6 
P2 Low Kick 

THE STAGES
ARMORY:191-191 
BELL TOWER::091-190 
BRIDGE:077-022 
COURT YARD:121-121 
DEAD POLL:222-222 
ERMAC'S PORTAL:933-933 
JADE'S DESERT:330-033 
NOOB SAIBOT'S DORFEN:050-050 
PIT 2:166-661 
PIT 3:820-028 
ROOF TOP:343-343 
SCORPION'S LAIR:666-444 
SHAO KHAN'S CAVE:004-700 
SHAO KHAN'S TOWER:880-220 
SOUL CHAMBER:123-901 
STAR BRIGDE:606-606 
STREETS:079-035 
SUBWAY:880-088 
TEMPLE:600-040 
THE GRAVE YARD:666-333 
THE LAIR:000-666 
THE PIT:919-919 
THE PORTAL:007-007 
THE TOWER:101-101 
THE WATERFRONT:002-003 
WASTELAND:212-212 

HANDICAPS 
BLOCKING DISABLED:020-020 
COMBOS DISABLED:722-722 
NO SPECIAL MOVES:555-556 
P1 1/2 ENERGY:033-000 
P1 1/4 ENERGY:707-000 
P1 DOES 1/2 DAMAGE:390-000 
P2 1/2 ENERGY:000-033 
P2 1/4 ENERGY:000-707 
P2 DOES 1/2 DAMAGE:000-390 
SUPER ENDURANCE:024-689 
THROWING DISABLED:100-100 
UNIKORN REF SANS POWER:044-440 

KOMBATS 
BLOODY KOMBAT:109-901 
DARK KOMBAT:688-422 
PSYCHO KOMBAT:985-125 
RANDPER KOMBAT:444-444 OR 460-460 
REAL KOMBAT:040-404 
SILENT KOMBAT:300-300 

The winner of the first round fights... 
CLASSIC SMOKE:205-205 
NOOB SAIBOT:769-342 
MOTARO:969-141 
SHAO KHAN:033-564 
KHAMELEON:123-321 

Hidden Messages
BABALITIES ARE REVERSIBLE!:202-808 
DON'T JUMP AT ME:448-844 
HOLD FLIPPERS DURING CASINO RUN:987-666 
NO FEAR,MAX COUNTDOWN,E B BUTTON,SKYDIVE:282-282 
PLAY THE WAVENET ULTIMATE MK 3:550-550 
RAIN CAN BE FOUND IN THE GRAVE YARD:717-313 
SKUNKY!!:122-221 
THERE IS NO KNOWLEDGE THAT IS NOT POWER!:123-926 
WHACHA GUN DO? E.B.:004-400 

Other Effects
AUTOMATIC KOMBOS:484-484 
HYPER RUN JUMPS:321-789 
INVISIBLE ENERGY BARS:987-123 
PLAY GALAGA:642-468 
PLAY PONG:246-246 
SHOW THE REVISION #:999-999 
THROWING ENCOURAGED:01-010 
UNLIMITED RUN:466-466 
UPPERCUT RECOVERY:788-322 

These codes only work in "2 ON 2" and "3 ON 3" games 
EXPLOSIVE KOMBAT and BLOCKING DISABLED:022-220 
EXPLOSIVE KOMBAT:227-227