Metal Gear Solid Codes -

Cheat Mode:
Start the game with the mgsi.exe -cheatenable command line. Then, press one of the following keys during game play to activate the corresponding cheat function.

Effect	Key
Restore energy, only at certain points	[F2]
Unlimited ammunition, only at certain points	[F4]
Return to normal view from observe mode	[F5]
Observe mode; camera can be moved throughout level	[F6]
Immediately restart level with all items already collected	[F7]
Toggle alternate graphics textures	[F8]
Toggle alternate graphics textures	[F9]
Toggle alternate graphics textures	[F11]
Toggle alternate graphics textures	[F12]

Development team photos:
Use the camera to take pictures at the following locations.

Effect	Key
Restore energy, only at certain points	[F2]
Unlimited ammunition, only at certain points	[F4]
Return to normal view from observe mode	[F5]
Observe mode; camera can be moved throughout level	[F6]
Immediately restart level with all items already collected	[F7]
Toggle alternate graphics textures	[F8]
Toggle alternate graphics textures	[F9]
Toggle alternate graphics textures	[F11]
Toggle alternate graphics textures	[F12]

Alternate ending and music:
Successfully complete the game with the Tuxedo costume.