Need for speed 1:
Start game, go to the main menu, go to the Statistics sub-menu, go back again (pressing DELETE), and finally enter your desired cheat:
Cheat -------- Effect:
gimmesomecircuits-----Unlock Circuits
gimmesomesprints----- Unlock Sprint Circuits
gimmesomedrag------- Unlock Drag Circuits
gimmeppablo--------- Unlock Petey Pablo
gotcharobzombie------ Unlock Rob Zombie
havyamystikal--------- Unlock Mystikal
needmylostprophets-----Unlock Lost Prophets
119focus ---------- Unlock Focus
893neon --------- Unlock Neon
899eclipse------ Unlock Eclipse
371impreza ------ Unlock Impreza
222lancer ------ Unlock Lancer
922sentra ------- Unlock Sentra
667tiburon------- Unlock Tiburon
334mygolf ------ Unlock Mygolf
77peugeot------ Unlock Peugeot
777rx7 ------ Unlock RX7
350350z------- Unlock 350Z
111skyline------ Unlock Skyline
221miata ------ Unlock Miata
973rsx777 ----- Unlock RSX
239celica ------- Unlock Celica
342integra ------ Unlock Integra
240240sx------ Unlock 240SX
228supra------- Unlock Supra
889civic ------- Unlock Civic
2000s2000------ Unlock S2000
allmylvloneparts ----- Unlock All Level 1 Parts
allmylvl2parts ------ Unlock All Level 2 Parts
2000s2000------- Unlock Updated Honda 2000
899civic-------- Unlock Updated Honda Civic
228supra---- -- Unlock Updated Toyota Supra
342integra------ Unlock Updated Honda Integra
239celica----- -- Unlock Updated Toyota Celica
973rsx777------ Unlock Updated Mazda RX7
allmylvloneparts----- Unlock Level One Upgrades
allmylvl2parts ------ Unlock Level Two Upgrades
Slidingwithstyle------ Unlock Drift Physics in all the game modes
driftdriftbaby------ Unlock all Drift Circuits
seemylvl1parts ------ Unlock all Level 1 Visual Parts
seemylvl2parts------ Unlock all Level 2 Visual Parts
givemenismo------ Unlock Nissan Sentra Nismo
need for speed underground 2:
Enter the following codes without spaces at the Press Enter screen before loading a profile:
Cheat------ Effect
gottaedge------ Unlocks Edge Sponsor Vinyl *works in career*
ordermebaby ----- Gives $1,000 to start Career mode, and Unlocks Nissan
Skyline and Mazda RX-8 in Quick Race
goforoldspice ------ Unlocks Old Spice Sponsor Vinyl *works in career*
needmybestbuy----- Unlocks Best Buy Sponsor Vinyl *works in career*
gotmycingular----- Unlocks Cingular Sponsor Vinyl * works in career*
gottahavebk------ Unlocks Burger King Sponsor Vinyl *works in career*
needperformance2 ----- Unlcoks Performance Upgrades Tier 2
gimmevisual2 -------- Unlcoks Visual Upgrades Tier 2
gimmevisual1------- Unlocks Visual Upgrades Tier 1
needperformance1----- Unlocks Performance Upgrades Tier 1
gottaedge ------- Edge vinyl in Career mode
tunejapantuning------ Japantuning sponsor car
gimmechingy------ Chingy Navigator sponsor car
davidchoeart------ David Choe sponsor car
opendoors----- the Doors sponsor car
shinestreetbright----- ShinestStreet sponsor car
yodogg------ Snoop Dogg sponsor car
wannacapone------ Capone sponsor car
regmybank------- Extra 200 in the bank in Career Mode
Salu2