Invasion from Beyond – Platform: Playstation 1

All Weapons/Upgrades/Ships:
Goto the Start Screen and enter the following:
L1, R1, L2, R2, Up, Down, Right, Left, Left, Right, Down, Up

Level Select:
Goto the Start Screen and enter the following:
L1, R1, L2, R2, Triangle, X, Circle, Square, Square,
Circle, X, Triangle