Jet Force Gemini

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

All the secret deathmatch characters in Jet Force are unlocked by touching the secret Totems hidden throughout the game, except for the Cyborg Ant (see below) and the powered-up versions of Vela, Juno and Lupus, which become available once you have received your powers in the single player mode.

Yellow Ant
Location: Goldwood
Type: Totem Pole
Character: Vela
Requirements: None

Blue Ant
Location: SS Anubis, Generator Room 2F
Type: Totem Pole
Character: Any
Requirements: None

Red Ant
Location: Ichor, Military Base
Type: Totem Pole
Character: Juno
Requirements: None

Green Ant
Location: Spawn Ship, Cargo Sewer
Type: Totem Pole
Character: Any
Requirements: None

Male Tribal
Location: Sekhmet, Channel Area
Type: Totem Pole
Character: Lupus
Requirements: Magenta Key

Female Tribal
Location: Rith Essa, Mine
Type: Totem Pole
Character: Vela
Requirements: Mine Key

Zombie Termite
Location: Tawfret, Treehut
Type: Totem Pole
Character: Lupus
Requirements: None

Beetle Termite
Location: Tawfret, Tomb
Type: Totem Pole
Character: Vela
Requirements: None

Metallic Termite
Location: Sekhmet, Spiral Walkway (hover across)
Type: Totem Pole
Character: Lupus
Requirements: None

Purple Termite
Location: Mizar's Palace
Type: Totem Pole
Character: Juno
Requirements: None

Cyborg Ant
Location: N/A
Type: Floyd Mission Award
Character: Floyd
Requirements: Get an Expert Award on all Floyd Missions

To get a different title screen, beat the game.

When you are out of machine gun ammo, kill an enemy with a pistol. Switch weapons to the one that is empty or low. Next pick up his gun. The bullets will now be compatible with the machine gun! As long as the equipped weapon is not the pistol or the shotgun, this will work.

This cheat turns all the enemy drones into stick figures with big pants. "Ants into Pants" becomes available in the Cheats menu (located under Options) as soon as you have collected 300 enemy heads.

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

Any veteran Mario or Banjo-Kazooie player will have already figured this one out. Falling from high places causes your character to take damage, but you can break your fall with the help of Lupus' rocket paws or Vela and Juno's jetpacks (only if you have fuel, in the case of Vela and Juno).

Not really a gameplay tip – but this feature isn't mentioned in the manual, so we figured we should include it. There is no need to go to the Character Screen if you need to quickly change characters when selecting a new world to fly to. You can change your character on the map screen, too. Simply use the C Buttons to switch the player icons in the corner until you've got the character you want

Where: Tawfret, Bridge (from Gimlet)
This handy tool lets you open the heavy trap doors on Tawfret and Walkway. To get it, bring the pants back to Gimlet.

At the Title Screen (where Juno and the others run towards the screen) enter,
Once entered you will see it appear in the bottom-right corner of the screen!

To turn the code off you need to, Enter the code again on the same screen to turn Debug mode off.
I found this code back in 2003 and now released it to the public.

Where: SS Anubis, Hold (Floyd Mission)
The ear plugs are the perfect protection for sensitive ears, especially when around noisy Tribals – but the Jet Force team can't use them. To get the ear plugs, get a Gold or Expert rating in the Floyd mission in the Hold area of the SS Anubis. Once you have access to the Water Ruin stage, bring the Ear Plugs to Ivana the Bear.

Where: Goldwood, first area after landing pad (treasure chest)
One of the first secrets in the game can be accessed right from the Goldwood entry area, even before you enter the Outset zone. Look for a secret passage near the right rock wall. Behind it, you will find the fishpond and a treasure box that contains fish food. Although it's listed among your weapons, the fish food is hardly lethal. You can use the fish food to feed the fishes (duh) or other hungry creatures, such as the creepy maggots or Flopsy the dog (which keeps them from attacking you). The food can also be used to distract your enemy or to detonate proximity mines without wasting any ammo.

Where: Celulean, Dune
Look for three gold bars in the Cerulean outdoor area. You can use them as payment for Fish Face's Tri-Rocket Launcher in the same level.

Most of the multiplayer modes have to be unlocked before you can play them, including the target ranges, the 2D Super Sprint clone and the 3D racing game. Here's how you can get them:

King of the Hill
Location: Cerulean Holding Room
Type: Totem Pole
Character: Any
Requirements: None

Tunnels Stage
Location: Rith Essa Waterfalls
Type: Totem Pole
Character: Vela
Requirements: None

Rith Essa Mine Stage
Location: Walkway Station
Type: Totem Pole
Character: Any
Requirements: Powered (jetpacks)

Space Station Stage
Location: Space Station Basement
Type: Totem Pole
Character: Any
Requirements: None

Goldwood Target Range
Location: Goldwood
Type: Floyd Mission Award
Character: Floyd
Requirements: Get Gold on Goldwood Floyd Mission

Rith Essa Target Range
Location: Eschebone
Type: Floyd Mission Award
Character: Floyd
Requirements: Get Gold on Eschebone Floyd Mission

Jeff & Barry Arcade Racing
Location: Ichor Arcade
Type: Arcade Score Reward
Character: Any
Requirements: Come in first on Jeff & Barry Arcade Racing

Jeff & Barry Arcade Racing II
Location: Ichor Arcade
Type: Arcade Score Reward
Character: Any
Requirements: Come in first on Jeff & Barry Arcade Racing II

Greenwood Village Race Track
Location: Ichor Arcade
Type: Arcade Score Reward
Character: Any
Requirements: Break the top records on both Jeff & Barry arcade machines.

Mizar 3D Racer
Location: Mizar's Palace
Type: Race Award
Character: Any
Requirements: Come in first in the Mizar races.

To get to these hidden worlds, just get to the ship in the areas listed below.

Where: Ichor, Military Base (Floyd Mission)
Only if you have found this circuit board can you play the Jeff & Barry II racing game in the nightclub arcade on Ichor (Jeff & Barry I can be played without it). Get a Gold rating in the Ichor Military Base Floyd Mission.

Collect 200 ant heads to unlock the Jet Force Kids cheat, which can be activated from the Cheats/Options menu. This cheat will turn the game's main characters into kids.

Another little feature not mentioned in the manual: use the C Down button to hover in place when using the jetpacks. It only uses half the fuel.

Juno
Yellow Key: Goldwood, Outset (hidden in a box in the caves)
Red Key: Goldwood, Outset (receive from Magnus)
Blue Key: Sekhmet, Battle Cruiser (lava pit, through pipe)
Green Key: Sekhmet, Battle Cruiser (jetpack room)
Magenta Key: Eschebone, Thorax (left intestine)

Vela
Yellow Key: Cerulean, Dune (holding room)
Red Key: Sekhmet, Battle Cruiser (receive from mole)
Blue Key: Eschebone, Thorax (underwater)
Green Key: Sekhmet, Battle Cruiser (jetpack room)
Magenta Key: Eschebone, Thorax (left intestine)

Lupus
Yellow Key: Spawn Ship, Troop Carrier (sewer pipe)
Red Key: Spawn Ship, Troop Carrier (cargo sewer)
Green Key: Sekhmet, Battle Cruiser (jetpack room)
Magenta Key: Eschebone, Thorax (left intestine)
Note: Lupus cannot acquire the Blue Key.

If you want to save on ammo, use Floyd -- even if a second player is not available. Find a hiding place, like a crate or a rock, stand behind it and press START on the second controller to activate Floyd (once you have put him together on Tawfret). Now shoot down your enemies from a safe distance, without wasting any ammo. Do the same if you want to take out crates. You can also use Floyd to snip – even when you don't have sniper rifle ammo. When playing with two players, player one can hide behind a box and zoom in on far away enemies with the sniper rifle. Whether player one has a clear line of fire or not, Floyd's higher up position ensures that player two can do the work – without wasting ammo.

Where: Rith Essa, Bluff
You need this key in order to get into the Rith Essa mines. Once you've got the Specialist Magazine from Eschebone, visit Fernando and trade it against the key.

Get a gold Floyd Medal in the Ichor Military Base Floyd Mission

Where: Tawfret, Bridge (on top of a tree)
What a charming place to forget one's shorts... In this desolate swamp haunted by zombie drones and giant bettles, a pair of shorts hangs from a tree. Bring them to their rightful owner, Gimlet, who awaits in the same stage.

In order to grab the many health gems located in seemingly unreachable areas -- such as on the SS Anubis generators or on beams in the cave levels -- shoot them using your pistol or machine gun. If you hit them correctly, they will move and slide down to your level.