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Need for Speed Underground

Codes

Unlock All Secrets

Start game, go to the main menu, go to the Statistics sub-menu, go back again (pressing DELETE), and finally enter your desired cheat:

EffectCode
240240sxUnlock 240SX
350350zUnlock 350Z
driftdriftbabyUnlock all Drift Circuits
allmylvlonepartsUnlock All Level 1 Parts
seemylvl1partsUnlock all Level 1 Visual Parts
allmylvl2partsUnlock All Level 2 Parts
seemylvl2partsUnlock all Level 2 Visual Parts
239celicaUnlock Celica
gimmesomecircuitsUnlock Circuits
889civicUnlock Civic
gimmesomedragUnlock Drag Circuits
SlidingwithstyleUnlock Drift Physics in all the game modes
899eclipseUnlock Eclipse
119focusUnlock Focus
371imprezaUnlock Impreza
342integraUnlock Integra
222lancerUnlock Lancer
allmylvlonepartsUnlock Level One Upgrades
allmylvl2partsUnlock Level Two Upgrades
needmylostprophetsUnlock Lost Prophets
221miataUnlock Miata
334mygolfUnlock Mygolf
havyamystikalUnlock Mystikal
893neonUnlock Neon
givemenismoUnlock Nissan Sentra Nismo
gimmeppabloUnlock Petey Pablo
77peugeotUnlock Peugeot
gotcharobzombieUnlock Rob Zombie
973rsx777Unlock RSX
777rx7Unlock RX7
2000s2000Unlock S2000
922sentraUnlock Sentra
111skylineUnlock Skyline
gimmesomesprintsUnlock Sprint Circuits
228supraUnlock Supra
667tiburonUnlock Tiburon
2000s2000Unlock Updated Honda 2000
899civicUnlock Updated Honda Civic
342integraUnlock Updated Honda Integra
973rsx777Unlock Updated Mazda RX7
239celicaUnlock Updated Toyota Celica
228supraUnlock Updated Toyota Supra

Contributed By: Db0y, vincereslunei, ViperTwinTurbo, and skidhead.

Unlockables

Extra Cars

UnlockableHow to Unlock
Select underground mode and complete at least the first 80 missions, then challenge Samantha. Defeat her in medium difficulty & win the next drag race1998 Nissan Skyline GRT34

Contributed By: vincereslunei.

Unlocakble Extra Cars

UnlockableHow to Unlock
Get 3,000,000 style points in Quick RaceEddie's Nissan Skyline GT-R
Get 2,250,000 style points in Quick RaceJunkman's Honda Civic (Samantha\'s ride, the one that TJ messed up)
Get 1,721,000 style pointsLost Prophets Car
Get 2,500,000 style points in Quick RaceMelissa's Nissan 350Z
Get 698,000 style pointsMystikal Car
Get 170,000 style pointsNismo Car
Get 533,000 style pointsPetey Pablo Car
Get 1,110,500 style pointsRob Zombie Car
Get 2,000,000 style points in Quick RaceSamantha's Honda Civic
Get 46,000 style pointsVortex Car

Contributed By: vincereslunei and NASCAR Fan 123.

Unlock All Visual Upgrades

To unlock all visual upgrades for single and multiplayer mode, simply complete Underground mode.

UnlockableHow to Unlock
Complete Underground mode.All Accessories
Complete Underground mode.All Body Parts
Complete Underground mode.All Decals
Complete Underground mode.All Paint Colors
Complete Underground mode.All Rims
Complete Underground mode.All Vinyl

Contributed By: Nhatters1314.

Secrets

Slower Enemies

Note: This is recommended only for progress level 95 or higher (Underground Mode only). Enemies here are much faster than you, even if you're driving an optimized car. Even playing on easy mode doesn't make much difference. So change the turbo and nitro parts to stock. For some reason, your opponents will be much slower than you.

Contributed By: Shadow Edge.

Unlimited Money Without Racing

First you must obtain the ''Nissan Skyline'' then you have to atleast unlocked 3/4 of all the performance upgrades(Note: Having all of them will allow you to make more money)Get rid of the performance parts that upgrade the Skyline's top speed and change the turbo package back to stock. The performance stats should read ''S, S, 3, S, S, 3, 3, 3, S''. (Or it might be different if you haven't obtained all performance parts) Then trade it in for the Mazda Miata getting a rebate of $12727 afterwards re-equip everything onto the Miata then trade it in again, this time for the Nissan Skyline getting a rebate of 119 dollars. Then just repeat the whole process again and again each time getting $12846 each time so you can buy all the Visual Parts and Performance Parts quickly.

Contributed By: EternalBlade.