Langrisser 4 & 5 (PSX)

Level select (normal difficulty):
At the load/save screen, press Square, Up, R1, Triangle, Down, Select.


Level select (hard difficulty):
At the load/save screen, press R1, R1, L1, L1, Square, Left, Triangle, Circle.


Bonus items:
At the "Shop" screen, press R1, Down, L1, Up, Square, X.