The following are known CWCheat Codes for PaRappa the Rapper on Sony Playstation Portable (PSP).

_S UCUS-98702
_G PaRappa The Rapper [US]
_C0 HARD MODE (Easy Fail)
_L 0x88A8CAEE 0x00000001
_L 0x18A8CAEE 0x00000003
_L 0xD2000000 0x00000000
_C0 Max Score
_L 0x18A379E6 0x00002710
_L 0x18A379E8 0x00002710
_L 0x18A379EA 0x00002710
_L 0x18A379EC 0x00002710
_C0 Never Fall Below BAD
_L 0x88A8CAEE 0x00000002
_L 0x28A8CAEE 0x00000002
_L 0xD2000000 0x00000000
_C0 Never Fall Below GOOD
_L 0x88A8CAEE 0x00000001
_L 0x18A8CAEE 0x00000001
_L 0xD2000000 0x00000000
_C0 U RAPPIN' RANK CODES:
_L 0xCF000000 0x00000003