Gex Vault

The Gex Vault was a secret vault located in Mission Control in Gex 3: Deep Cover Gecko. It could only be opened by beating all 4 secret levels. Once the vault was open, Gex could use the cheat codes earned from the bonus levels to unlock various secrets.

Vault codes

PS1

Effect	Password	Note
Extra Life	△ , ◯ , ☆, ◻, ◻, X
Ten Extra Lives	◻, X, ◯, ◯, △, ◻	The life counter will cap at 98 lives
Invincibility	◻, ☆, △ , ◻, △, ⬨	Bottomless pits can still kill you.
Maximum Health (Hit paws)	◻, ⬨, △, △, ☆, ⬨	This will give you the maximum hit points. This will do nothing if you have already collected 100 Paw Coins by the vault's unlocking.
Play as Alfred	◻ X, △, ◻, ☆, ☆	You can only play him in the Mission Control Hub
Play as Rex	◻, ☆, ☆, ◻, △, △	You can only play him in the Mission Control Hub
Play as Cuz	◻, ⬨, ◻, ◻, △, ⬨	You can only play him in the Mission Control Hub
Movie Viewer	☆, X, X, ◯, ◻, △	Press Select to bring up the cutscene viewer menu
Secret Western Video	⬨, ☆, ◻, X, △, ◯
Secret Army Video	◯, △, ◻, ☆, ⬨, ☆
Secret Gangster Video	X, ⬨, ☆, △, △, ◯

N64

Effect	Cheat code input	Note
Ten Extra Lives	◻, X, ◯, ◯, △, ◻
Eight Hit Paws	◻, ⬨, △, △, ☆, ⬨
Invincibility	◻, ◻, △, ◻, △, ⬨
Level Select	◻, ◯, ◯, △, X, X
Play as Alfred	◻, X, △, ◻, ☆, ☆	Mission Control only
Play as Cuz	◻, ⬨, ◻, ◻, △, ⬨	Mission Control only
Play as Rex	◻, ☆, ☆, ◻, △, △	Mission Control only
Play as tiny Vampire Gex	☆, X, X, ◯, ◻, △	Mission Control only
Timer Menu	◻, ◻, ⬨, ◯, X, X