Excalibur 2555 A.D. - Platform: Playstation 1

Full health
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Pause game play and press Triangle(3), Square(5), and resume 
game play. 

Full weapon
----------- 
Pause game play and press Triangle(2), Square(2), Circle(2), 
Square(2) and resume game play. An on-screen message will 
confirm correct code entry. 

Display collision boxes
----------------------- 
Pause game play and press Circle(4), Square, Circle(2), Square 
and resume game play. 

Level skip
----------- 
Pause game play and press Square, Circle, Square, Triangle, 
Circle, Triangle(3). 

Level Name Password
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2. Death Crypt Triangle, Square, X, Circle, Circle, Triangle 
3. The Trappings Circle, Square, X, Circle, Circle, Triangle 
4. The Sewer Square, X, Triangle, Triangle, X, Circle 
5. Eco Sector Circle, X, Circle, Triangle, Square, X 
6. Fabian Water Hold X, Circle, Triangle, Square, Circle, Circle 
7. Fabian Central Square, Square, Circle, Circle, X, Triangle 
8. The Prison Circle, X, Square, Triangle, Triangle, Square 
9. Elysian Labyrinth Triangle, X, Triangle, Circle, Square, Triangle 
10. Subterranean Triangle, Circle, Circle, Square, Triangle, X 
11. The Vault X, Square, Square, X, Triangle, Square 
12. Delavar's Lair Circle, Triangle, X, Circle, Square, Circle 
13. Project Eden Square, Triangle, Circle, X, X, X