The following are known CWCheat Codes for Moeru Mahjong: Moejong! on Sony Playstation Portable (PSP).

_S ULJM-05375
_G Moeru Mahjong: Moejong! (Premium Box) [JP]
_C0 All Opponents 0 Points
_L 0x20079AE8 0x00000000
_L 0x20079AE4 0x00000000
_L 0x20079AE0 0x00000000
_C0 God Hand/Tenho
_L 0x0007F346 0x0000001B
_L 0x00089730 0x00000031
_L 0x0007F3FE 0x0000001B
_L 0x00089731 0x00000031
_L 0x0007F4B6 0x0000001E
_L 0x00089732 0x00000034
_L 0x0007F56E 0x0000001E
_L 0x00089733 0x00000034
_L 0x0007F626 0x0000001E
_L 0x00089734 0x00000034
_L 0x0007F6DE 0x0000001F
_L 0x00089735 0x00000035
_L 0x0007F796 0x0000001F
_L 0x00089736 0x00000035
_L 0x0007F84E 0x0000001F
_L 0x00089732 0x00000035
_L 0x0007F906 0x00000020
_L 0x00089733 0x00000036
_L 0x0007F9BE 0x00000020
_L 0x00089739 0x00000036
_C0 Infinite Points for shop
_L 0x20079A94 0x0001869F
_C0 Infinite Tiles
_L 0x0006B2BC 0x000000FF
_L 0x0006DA7C 0x000000FF
_C0 Max Number of Richi
_L 0x0006B262 0x000000FF
_L 0x0006B263 0x000000FF
_L 0x0007EAA6 0x000000FF
_L 0x0006B345 0x000000FF
_L 0x0007EB02 0x000000FF
_C0 nokori hai 
_L 0x0006B3BC 0x00000044 
_L 0x2030B384 0x000F423F
_C0 Player Infinite Points in Play
_L 0x20079AEC 0x000F423F
_C0 PLAYER SCORE 
_L 0x20079AEC 0x000182B8 
_C0 point 
_L 0x20079A94 0x0000270F