Go to the adjust settings menu from the main menu. Then choose the "Miscellaneous" option, and highlight the "Credit Limit" selection. Now hold Square + Circle + Triangle + X. If you entered the code correctly, the phrase "Free Play" will appear. If the game settings are saved, free play mode will also be included.
Set the credits to nine and start the game using controller two. Then when player two's ship launches, immediately press Start on controller one. Allow player two's ship to be lost. Now player one will have sixteen credits.
Go to the difficulty menu from the settings menu. Then, hold R1 + R2 + L1 + L2 + Start.
While playing a game, hold R1 + R2 + L1 + L2 to display a hidden options menu. Now the screen resolution, position, and other options may be adjusted.
During the game over countdown, press Select.
Look for the slightly off color trees that are not initially destroyed by your ship's fire power. They are usually located on the right side of the screen. Approach these trees and shoot at them until they explode. Capture the pixie that flies out of the explosion. Now when your ship is destroyed, a group of power-ups will be released.
During the Raiden I demonstration, hold L1 to control the ship. During the Raiden II demonstration, hold R2 to control the ship.
| Raiden One | |
| Infinite Credits | 8004D5DA 0003 |
| Infinite Lives P1 | 8012F7F4 0003 |
| Infinite Nuke Bombs P1 | 8012F802 0003 |
| Max Homing Missiles P1 | 8012F800 0004 |
| Max Vulcan P1 | 8012F7FA 0008 |
| Max Laser P1 | 8012F7FC 0008 |
| Max Nuke Missiles P1 | 8012F7FE 0004 |
| Infinite Lives P2 | 8012F824 0003 |
| Infinite Nuke Bombs P2 | 8012F832 0003 |
| Max Homing Missiles P2 | 8012F830 0004 |
| Max Vulcan P2 | 8012F82A 0008 |
| Max Laser P2 | 8012F82C 0008 |
| Max Nuke Missiles P2 | 8012F82E 0004 |
| Raiden Two | |
| Infinite Credits | 800FFC24 0003 |
| Infinite Lives P1 | 800ECF40 0003 |
| Infinite Thermonukes P1 | 800ECF38 0101 |
| Infinite Cluster Bombs P1 | 800ECF38 0202 |
| Max Vulcan P1 | 800ECF28 0008 |
| Max Laser P1 | 800ECF2A 0008 |
| Max Plasma P1 | 800ECF2C 0008 |
| Max Nuclear Missiles P1 | 800ECF30 0004 |
| Max Homing Missiles P1 | 800ECF32 0004 |
| Infinite Nuke Bombs P1 | 800ECF3C 0003 |
| Infinite Lives P2 | 800ECF80 0003 |
| Infinite Thermonukes P2 | 800ECF78 0101 |
| Infinite Cluster Bombs P2 | 800ECF78 0202 |
| Max Vulcan P2 | 800ECF68 0008 |
| Max Laser P2 | 800ECF6A 0008 |
| Max Plasma P2 | 800ECF6C 0008 |
| Max Nuclear Missiles P2 | 800ECF70 0004 |
| Max Homing Missiles P2 | 800ECF72 0004 |
| Infinite Nuke Bombs P2 | 800ECF7C 0003 |
