Sims, The

All Items Cost No Simoleons
Hold L1, R1, L2, R2. Then enter FREEALL.
(Thanks to GAM1950@aol.com)

First Person View
Hold L1, R1, L2, R2. Then enter FISH EYE. Press Circle to switch back.
(Thanks to GAM1950@aol.com)

Party Motel Mode
Hold L1, R1, L2, R2. Then enter PARTYMOTEL.
(Thanks to Wfewmiles@aol.com)

Sims Mode
Hold L1, R1, L2, R2. Then enter SIMS.
(Thanks to VidPla3356@aol.com)

Unlock All Locked Items
Hold L1, R1, L2, R2. Then enter MIDAS.
(Thanks to GAM1950@aol.com, david_lame7@hotmail.com)

Unlock Museum (2-player Mode)
Borrow $800 from Mom.
(Thanks to Scrappydoo7)

Unlock Two-Player Mode
Hold L1, R1, L2, R2. Then enter MIDAS. Choose Get-A-Life Mode, then get into the hot hub with the girl. Press Start, then choose Quit.
(Thanks to Scrappydoo7)