The following are known CWCheat Codes for Downstream Panic! on Sony Playstation Portable (PSP).

_S ULUS-10322
_G Downstream Panic! [US]
_C0 9 Attractor
_L 0x600DE01C 0x00000009
_L 0x00000001 0x0000006C
_C0 9 Bombs
_L 0x600DE01C 0x00000009
_L 0x00000001 0x00000060
_C0 9 Fans
_L 0x600DE01C 0x00000009
_L 0x00000001 0x00000068
_C0 9 Freezer
_L 0x600DE01C 0x00000009
_L 0x00000001 0x00000074
_C0 9 Harpoon
_L 0x600DE01C 0x00000009
_L 0x00000001 0x00000070
_C0 9 Net
_L 0x600DE01C 0x00000009
_L 0x00000001 0x00000078
_C0 9 Plants
_L 0x600DE01C 0x00000009
_L 0x00000001 0x00000064
_C0 Instant Win Level
_L 0x600DE040 0x00000064
_L 0x00000001 0x00000018