Play as Yellow Ant in deathmatch:
Make contact with the hidden Totem Pole as Vela in Goldwood.

Play as Blue Ant in deathmatch:
Make contact with the hidden Totem Pole in SS Anubis (Generator Room 2F).

Play as Red Ant in deathmatch:
Make contact with the hidden Totem Pole as Juno in Ichor (Military Base).

Play as Green Ant in deathmatch:
Make contact with the hidden Totem Pole in Spawn Ship (Cargo Sewer).

Play as Male Tribal in deathmatch:
Play as Lupus and collect the Magenta Key in Eschebone (Thorax. left intestine). Then, make contact with the hidden Totem Pole as Lupus in Sekhmet (Channel Area).

Play as Female Tribal in deathmatch:
Collect the Mine Key. Then, make contact with the hidden Totem Pole as Vela in Rith Essa (Mine).

Play as Beetle Termite in deathmatch:
Then, make contact with the hidden Totem Pole as Vela in Tawfret (Tomb).

Play as Metallic Termite in deathmatch:
Make contact with the hidden Totem Pole as Lupus in Sekhmet, (hover across the Spiral Walkway).

Play as Purple Termite in deathmatch:
Make contact with the hidden Totem Pole as Juno in Mizar's Palace.

Play as Zombie Termite in deathmatch:
Then, make contact with the hidden Totem Pole as Lupus in Tawfret (Treehut).

Play as Cyborg Ant in deathmatch:
Obtain an expert rank as Floyd on all Floyd levels.

Cheat mode:
Press Analog-stick Right(3) at the character selection screen then press Analog-stick Left to highlight and select Lupus. When game play begins, press C-Right(3), C-Left, C-Right(2), C-Up(3). The sound of Lupus barking will confirm correct code entry. Press A to cycle through the available weapons and items. Press B to drop the selected object at Lupus' current location.

Rainbow Blood mode:
Collect 100 ant heads to unlock the "Rainbow Blood" option on the cheat menu.

Jet Force Kids mode:
Collect 200 ant heads to unlock the "Jet Force Kids" option on the cheat menu. Enable this option to unlock the kid version of the game's characters.

Ants Into Pants mode:
Collect 300 ant heads to unlock the "Ants Into Pants" option on the cheat menu. Enable this option to get stick figures with large pants as enemies.

King of the Hill multi-player level:
Make contact with the hidden Totem Pole in Cerulean Holding Room.

Tunnels multi-player level:
Make contact with the hidden Totem Pole as Vela in Rith Essa Waterfalls.

Rith Essa Mine multi-player level:
Collect powered jetpacks. Then, make contact with the hidden Totem Pole in Walkway Station.

Space Station multi-player level:
Make contact with the hidden Totem Pole in Space Station Basement.

Goldwood Target Range multi-player level:
Obtain a gold rank on the Goldwood Floyd level.

Rith Essa Target Range multi-player level:
Obtain a gold rank on the Eschebone Floyd level.

Jeff And Barry Arcade Racing multi-player level:
Obtain a first place score on Jeff And Barry Arcade Racing at Ichor Arcade.

Jeff And Barry Arcade Racing II multi-player level:
Obtain a first place score on Jeff And Barry Arcade Racing II at Ichor Arcade.

Greenwood Village Race Track multi-player level:
Obtain a first place score on both Jeff And Barry Arcade Racing machines at Ichor Arcade.

Mizar 3D Racer multi-player level:
Obtain a first place finish in the races at Mizar's Palace.

Alternate title screen:
Accomplish the following tasks during the game to unlock sequences on the title screen.

Rescue Vela (Juno and Vela run on their ship)
Put Floyd back together (Juno and Vela run and Floyd flying on their ship)
Have Lupus (All characters run on their ship)
Defeat Mizar once (All characters wearing upgraded armor run in Mizars Palace)
Defeat Mizar for the final time (Juno, Vela, and Lupus wearing regular armor walking down a runway on Earth)

Quick character change:
Press C-Left or C-Right at the map screen to quickly change the character icons.

Hear Lupus howl:
Press C-Down when playing as Lupus.

Super jump:
Hold C-Up to perform a super jump.

Fix the camera:
Players may notice that the default camera setting of Jet Force Gemini in one-player mode cuts off their vision left and right. For a much better camera view in one-player mode, go to the "Options" menu, turn on "Widescreen" (even if you are using a standard television or monitor), and press C-Up to raise the screen up several inches. Not only does this zoom back the camera, this also puts the game in a fish-lens and wide-angle view -- almost doubling your peripheral vision. This way, it will be much harder for the enemies to run out of camera range.

Avoid getting hit by flying objects:
When reaching a section with small flying objects, run behind a tree and repeatedly run sideways to avoid getting hit.

Abilities:
Juno can walk on fire (lava), Vela can swim, and Lupus can hover.

Hover with jetpack:
Press C-Down to hover with the jetpack. Note: This consumes less fuel then actively flying.

Collect out of reach Gemini Crystals:
To retrieve Gemini crystals that are in view, but out of reach, use any of the long range weapons to shoot them. They will bounce down to floor level.

More lives in multi-player mode:
Select a character at the selection screen in multi-player mode and repeat with another controller. If you want more players, unplug a controller, move it to another port, and repeat.

Easy Mizar tokens, health, and ammo:
Return to Goldwood after finding the Tri-Rocket Launcher on Tawfret. There are two huts that have been left intact in the first Goldwood mission. Use the Tri-Rocket Launcher to blow up the doors to the huts. Inside one hut are twelve Mizar Tokens. You can exit and re-enter the hut as often as needed to collect additional tokens. The other hut contains a Diamond Geezer, who will refill all of your ammunition and health for some Mizar Tokens.

Winning Mizar Races:
When the race begins, the racer beside you is almost guaranteed to win unless you immediately use a boost. In order to win, must get ahead of him at the start of the race by using a boost.

Unlimited Mizar tokens:
Locate an area that contains Mizar tokens but no opponents, such as the beginning of the Spawnship or the rib cage in Eschebone. Take Mizar the tokens, then leave and return. The Mizar tokens will re-appear and may be collected again.

Weapons of choice:
The following weapons are recommended for the indicated target.

Blue, Red or Yellow Drone: Pistol or Machine gun
Shielded: Machine gun
Infantry Weevil or other large drones: Tri-Rocket or Homing missile
Barricade: Tri-Rocket or Shrinkin
Mizar: Tri Rockets, Homing missiles, Machine gun
Bosses: Any weapon (Slug: Machine gun, Tri-Rocket and Homing missiles)
Last Resource: Shrinkin, Plasma shotgun, Flamethrower or Shocker
Never use: Fish Food

Refill ammunition:
Switch to the shotgun, pistol or machine gun if running low on ammunition and run over the bodies of dead enemies to collect more bullets for that weapon. To refill the flame thrower, shoot Tribals once to force them to drop their lanterns without killing them. Collect the lanterns to use as flame thrower ammunition.