Throughout the series, there have been a number of cheat codes that cause various effects such as infinite lives or invincibility.
Gex[]
Note: Power-up cheats and the invincibility cheat will deactivate upon completeing a level and must be input again when starting another level.
Panasonic 3DO[]
| Effect | Cheat code input | Note |
|---|---|---|
| 99 Lives | While paused hold Right Shift and Left, C, Down, Down, Right, A, C, Up, Left, A | Cannot go beyond 99 lives. |
| Blue firefly | While paused hold Right Shift and press Left, C, Down, B, Left, Up, Right, B, A, Left, Left, Down | Ice Power-Up |
| Caterpillar | While paused hold Right Shift and press Left, C, Down, Up, Up, C, Left, Right, A, Right | Invincibility |
| Centipede | While paused hold Right Shift and press Left, C, Down, Right, Up, Up, Up, Right, Right | Super Speed |
| Grasshopper | While paused hold Right Shift and press Left, C, Down, Right, Up, B, B, Right, Right | Super Jump |
| Red Firefly | While paused hold Right Shift and press Left, C, Down, Right, Right, Down, B, A, Left, Left, Down | Fire Power-Up |
| Yellow Firefly | While paused hold Right Shift and press Left, C, Down, Right, Right, Left | Electricity Power-Up |
| Level Select | While at the map screen, bring up the remote menu, hold Right Shift and press Left, C, Down, Left, Right, Right, Up, Right, Right | Selecting any of the Planet X levels will take you to Frankie and Heli |
| Planet X Level Select | While at the title screen hold Right Shift and Left, C, Down, A, B, C, A, B, C, A, B, C, C, B, A. | Initially will play the title screen music when you enter a level. If the player dies, it will play the regular stage music. |
| Debug Mode | While paused hold Right Shift press Left, C, Down, Left, Right, A, Down, Right, Left |
|
PS1[]
| Effect | Cheat code input | Note |
|---|---|---|
| 100 Lives | While paused, hold L1 and press Up, Circle, Triangle, Down, Right, Square, Down, Select | |
| Level Select | Hold R1 + Select at the Dome then press Circle, Start, Right, Up, Square, Left, Left, Up, Start | No access to the cut levels in the game. |
| Infinite Lives | While paused, hold R1 and then press Up, Circle, Triangle, Down, Right, Square, Down | |
| Red Firefly | While paused, hold R1 and then press X, up, Right, Up, Right, Right | Fire Power-Up |
| Blue Firefly | While paused, hold R1 and then press Circle, Circle, Left, Down, Circle, Up, Right | Ice Power-Up |
| Yellow Firefly | While paused, hold R1 and then press Right, Left, Right, Circle,Triangle, Right, Circle, Down, Right | Electricity Power-Up |
| Caterpillar | While paused, hold R1 and then press X, Square, Down, Down, Up, Down, Right | Invincibility |
| Grasshopper | While paused, hold R1 and then press X, Circle, Up, Up, Down, Right, Right | Super Jump |
| Centipede | While paused, hold R1 and then press Down, Start, Right, Right, Down, Up | Super Speed |
| Complete Level Select | At the Dome, hold R1 and then press Select, X, Square, X, Right, Up, Left, Circle, Circle, Down, Down. |
Sega Saturn[]
| Effect | Cheat code input | Note |
|---|---|---|
| 99 Lives | While paused, hold Right Shift and press Up, Up, Down, Right, A, Down | |
| Unlimited Lives | While paused, hold Right Shift and press Up, Up, Down, Right, Y, B, Up, Right, Up | |
| Level Skip | While paused, hold Right Shift and press Start, Right ,Right ,Down, Right, Up, Left, A, Left, Left | |
| Unlock Stages | While paused, hold Right Shift and press Start, Right, Right, Down, Right, Up, L, A, Left, Left | |
| Display Credits | While paused, hold Right Shift and press C,Left,Up,Right,Left,Right,Down,Down | |
| In-game reset | While paused and press A, B, L, R, X, Y, Z | |
| Red Firefly | While paused, hold Right Shift and press C, Up, Right, Right, Y, B, Up, R, Up. | Fire Power-Up |
| Blue Firefly | While paused, hold Right Shift and press Right, Y, Right, Down, Right, Right, B ,Left ,Up ,Right | Ice Power-Up |
| Yellow Firefly | While paused, hold Right Shift and press Down , Up, Start, Right, Right, Z, A, Start, Start, Right, Right. | Electricity Power-Up |
| Caterpillar | While paused, hold Right Shift and press B, A, Down, A, Down, Down, Down, Up, Down, Right | Invinicible |
| Centipede | While paused, hold Right Shift and press Right, X, L, Right, A ,Down, Start, Right, Right, Down | Super Speed |
| Grasshopper | While paused, hold Right Shift and press Down, Up, Start, Right, Right, Down, L, Right | Super Jump |
PC[]
| Effect | Cheat code input | Note |
|---|---|---|
| 99 Lives | While paused, type password iwillneverdiebungholio | |
| Red Firefly | While paused, type password secondhandsmoke | |
| Blue Firefly | While paused, type password ihaveshrinkage | |
| Yellow Firefly | While paused, type password thentherewaslight | |
| Centipede | While paused, type password grandenonwalter | Super Speed |
| Grasshopper | While paused, type password itsagasgasgas | Super Jump |
| Caterpillar | While paused, type password drunkenmaster | Invinciblity |
| Go to Bonus Credits | At the title screen, type password imaloserbaby | |
| Planet X Secret Level Select | At the title screen, type password partyatroswell | |
| Level Select | At the world map, open the remote menu, open the password menu, then type password hoosierbuddy | |
| Unlock all levels on current map | At the world map, open the remote menu, open the password menu, then type password sofakingdom |
Gex: Enter the Gecko[]
Note: In-game cheats are only available through gameplay in the Sony Playstation and PC versions. However, in-game cheats in the Nintendo 64 port can be activated through password system
PS1[]
| Effect | Cheat code input | Note |
|---|---|---|
| Bonus Ending | At the main menu, go to the password screen and enter this code: R1, R2, X, L2, Square, X, Square, R2, R2, R2, X, L2, Square, X, R2, Square, L2, R2, X, L2, Square, X, R2, Square, L2, R2, X, Square | |
| All remotes passcode | Go to the password screen and enter this code: Square, Circle, R1, Triangle, L1 R1, L1, R1, Circle, Circle, R1 Triangle, L1, R1, Circle, L1, Triangle Circle, R1, Triangle, L1, R1, Circle L1, Triangle, Circle, R1, L1 | Grants 98% completion |
| Debug Mode | Pause the game and highlight Exit, then hold L2 and press Left, Circle, Up, Down, Right, Right, Left, Triangle, Up, Down | Press Select to bring up debug menu |
| Infinite Lives | Pause the game and highlight Exit, then hold L2 and press Up, Up, Down, Right, Triangle, Down | |
| Inviniciblity | Pause the game and highlight Exit, then hold L2 and press Left, Right, Triangle, Down, Right, Left | This cheat also disables the air timer in the Rocket Channel levels. |
| Level Select | Pause the game and highlight Exit, then hold L2 and press Right, Right, Left, Right, Triangle, Down, Right | When activated, press Select to open level select menu |
| Blabbermouth Gex | Pause the game and highlight Exit, then hold L2 and press Down, Right, Up, Down, Right, Left, Right, Down, Down | |
| Stage Timer | Pause the game and highlight Exit, then hold L2 and press Right, Triangle, Right, Left, Triangle, X | When activated, press Select to show level statistics or press Square to show fastest times |
| Voice Activation mode | Pause the game and highlight Exit, then hold L2 and press Triangle, Left, Circle, Up, Down | Press Select for Gex to make a comment |
PC[]
| Effect | Cheat code input | Note |
|---|---|---|
| Cheat menu | Press [Esc] to pause the game at the Media Dimension. Then, hold H and press [Right] [Right] [Left] [Right] [Space] [Down] [Right]. |
|
Gex 3: Deep Cover Gecko[]
PS1[]
| Effect | Cheat code input | Note |
|---|---|---|
| Blabbermouth Gex | While paused hold L2 and press Down, Right, Left, Circle, Up, Right | Press select to hear commments |
| Debug Menu | While paused hold R2 and press Up, Circle, Right, Up, Left, Right, Down | You will gain access to the debug menu |
| Level Select | While paused hold L2 and press Left, Triangle, Up, Down, Right, Right | Enables to access all levels in the game. |
| Invincibility | While paused hold L2 and press Down, Up, Left, Left, Triangle, Right, Down | Infinite health will be activated. Caution: does not include infinite lives. |
N64[]
| Effect | Cheat code input | Note |
|---|---|---|
| Infinite Health | Pause the game, hold R and press Up-C, Left-C, B, A, Down-C, Right-C, Up-C, Z | Infinite health will be activated. |
| Level Select | B, A, B, Z, C-Left, C-Right, C-Up, Z. | You will gain access to the level select. |