The following are known CWCheat Codes for Platypus on Sony Playstation Portable (PSP).

_S ULUS-10203
_G Platypus [US]
_C0 15 Lives
_L 0x002D32E0 0x0000000F
_C0 5 Credits
_L 0x002D32D4 0x00000005
_C0 High Score
_L 0x202D32D8 0x10000172
_L 0x205F4150 0x10000172
_C0 Infinite Lives
_L 0x002D32E0 0x00000009
_C0 Infinite Special Weapon Time
_L 0x002D32EE 0x0000420B
_C0 Weapon 2x Phaser (Fast)
_L 0x002D32F4 0x00000005
_C0 Weapon 2x Phaser (Standard)
_L 0x002D32F4 0x00000004
_C0 Weapon 4x Phaser
_L 0x002D32F4 0x00000006
_C0 Weapon Laser
_L 0x002D32F4 0x0000000C
_C0 Weapon Rockets
_L 0x002D32F4 0x0000000A
_C0 Weapon Shockwave
_L 0x002D32F4 0x00000009
_C0 Weapon Shockwave
_L 0x002D32F4 0x00000009