You can enter these codes on the code menu.

All Cities - 659996
All Monsters - 525955
Challenges - 975013
HP Restores - 536117
Energy does not restore - 122574
P2: infinite energy - 324511
P2: invisable - 118699
P2: invinceable - 259333
P3: 4X damage - 500494
P3: infinite energy - 651417
P3: invisable - 507215
P3: invinceable - 507215
P4: 4X damage - 988551
P4: infinate energy - 456719
P4: invisable - 198690
P4: invinceable - 485542
100,000 points - 532459
buildings can't be destroyed - 812304
gallery - 294206
Godzilla: Final Wars Profiles - 409014