Metroid Prime Codes -

Classic Metroid game:
Note: This trick requires Metroid Fusion and the Game Boy Advance and a link cable. Successfully complete Metroid Fusion and save the game. Connect both games with the link cable to unlock the classic NES version of Metroid.

Metroid Fusion costume:
Note: This trick requires Metroid Fusion and the Game Boy Advance and a link cable. Successfully complete Metroid Prime and save the game. Connect both games with the link cable to unlock Samus' Metroid Fusion costume.

Image Gallery 1 option:
Complete 50% of the research and creature data scans.

Image Gallery 2 option:
Complete 100% of the research and creature data scans.

Image Gallery 3 option:
Successfully complete the game under the hard difficulty setting.

Image Gallery 4 option:
Find 100% of all power-ups. Note: This does not include the Log Book.

Hard mode:
Successfully complete the game to unlock hard mode.

Alternate ending sequences:
Finish the game with a 74% or less completion percentage for the normal ending sequence. Finish the game with a 75% to 99% completion percentage to view an alternate ending sequence. Finish the game with a 100% completion percentage to view the best ending sequence.

Hint: Fire missiles faster:
With the first gun equipped, rapidly press Y + A. As soon as the missile fires, the gun will switch back to beam weapon mode, but when you press Y again, it fires another missile. This can take down enemies in a shorter time, preventing them from having more attacks on you.

Hint: Chozo Ruins: Kill birds:
When you enter the Chozo Ruins, aim your gun skywards. You will see birds flying. Shoot the birds and they will explode, with feathers all over the place.

Hint: Magmoor: Ice Spreader:
The Ice Spreader is difficult to find. It is in a room called the Shore Tunnel in Magmoor that has a glass case. Use the Power Bombs in the glass tube. The tube will shatter, and the Ice Spreader is directly below.

Hint: Magmoor Caverns: Avoid streams of fire:
Shoot the little objects that shoot out the fire with the Ice Spreader. This freezes them and prevents them from shooting the fire.

Hint: Phazon Mines: Invisible to enemies:
Enter the Phazon Mines via Magmoor Caverns. Go through the bottom floor until you reach the elevator, marked on the map with a red arrow. Head through the mines until you reach the area marked "Omega Research". Enter through the Dynamo Access, but just jump straight up through the door, not forward or back. Once you land, neither move nor shoot. If done correctly, none of the Power Troopers will see you. Wait awhile, and eventually one of the Power Troopers will enter the alcove that you are in. He will look, then around and leave the alcove, never having noticed you. He will continue to do this until you move or shoot one of them. For extended laughs, charge your Power Beam (they will still ignore you), wait for him to start looking around in the alcove, then fire a Super Missile to blast him across the room. Note: This will not work if you enter Omega Research from the other direction.

Hint: Defeating Flaahgra:
The trick is to knock down the light-reflecting mirrors and bomb the plant away. At first, there is only one mirror that reflects the light and helps grow the plant. Fire at Flaahgra with normal fire rapidly until it is stunned; there is no need for heavy firearms. It will not be able to attack you at all if you stun it on time. After Flaahgra is stunned, run to the one reflecting mirror and shoot the red target behind the mirror with either a charge beam or only one missile. Flaahgra will shrink and its spiky roots will vanish. Roll into a ball, go into where the roots were protecting, and drop a bomb. The plant is killed, but returns with two mirrors. Do the same thing with two mirrors, then three mirrors, then finally four mirrors. After finally killing Flaahgra, the Varia Suit is yours.

Hint: Defeating Metroid Prime:
When you fight the second form of Metroid Prime and step in his blue Phazon puddles, enter Hyper Mode and attack with the Phazon Beam. No other weapons will defeat him. However, he releases progressively harder Metroids when he lays down Phazon, starting with Larva, moving to Hunter, then Fission Metroids. Dispatch these much as you would a Beam Pirate, with charged shots of the appropriate color. Do not let them latch onto you.

Hint: Defeating Chozo Ghosts easily:
Shoot two Super Missiles to kill Chozo Ghosts. Also, if you have the X-ray Scope, you can maintain a lock on them.

Hint: Defeating Elite Pirates:
When the Elite Pirates burst out of containment, switch to your normal beam and build up a charge shot. When the Elite is not trying to absorb energy, fire a Super Missile at them. Two Super Missiles will take them down.

Use the following tactics to defeat the different kinds of Elite Pirates at the Phazon Mines. This is a very difficult area due to switching beams for certain pirates:

Power Troopers
Use Normal Beams or charge a Normal Beam at it three to four times.

Wave Troopers
Use Wave Beams or charge a Wave Beam at it (two to four times).

Ice Troopers
Use Ice Beams or charge an Ice Beam at it and finish it with one missile.

Shadow Pirates
Use the Thermal Visor to see them. Use Wave Beams or charge a Wave Beam at it at full force (two to four times); or, fire with ease with the Plasma Beam.

Plasma Troopers
Fire at them with your Plasma Beam three or four times. Hide behind a wall and the Plasma Beam will end up finishing them with its burning effect. Do this to other pirates as well, even though they only need about three shots to be killed, only about one will evaporate them if you just wait patiently.

Hint: Defeating Meta-Ridley:
To make the fight against Ridley easier, you must have as many missiles as you can possibly find, the Super Missile Beam combo, and the Wavebuster Beam combo. The battle can reduce an inventory of all 250 missiles down to about 25. During the first part when Ridley is flying, use the Super Missile Beam combo when you can get a clear shot as his chest. Then, when his wings burn up and you are forced to fight him melee style, switch to your Wave Beam and activate your Wavebuster combo to constantly shock him. Do not release A until he is dead or you are out of missiles. Do not worry about depleting your missiles -- there is a recharge station in the Impact Crater.

Hint: Defeating Metroids:
Normal Metroids (not Prime) can be dispatched rapidly by using Freeze Beam followed by a missile.

Fission Metroids or any other Metroid can be defeated by using a Power Bomb. This is particularly useful during the last part of the game when you are trying to avoid getting damaged.

Hint: Easy kills:
Flying Pirates, Gun Turrets, and most non-mini Boss type creatures can be taken out by the Ice Beam followed by a missile.

Hint: Phazon Suit:
To acquire the Phazon Suit, you must defeat the Omega Pirate. The Phazon Suit makes you immune to most forms of Phazon radiation. It also comes equipped with the Phazon Beam, which can only be activated during the last Boss fight.

Hint: Morphball Bomb double jump:
When in Morph Ball mode, it is possible to do a double jump with a little innovation. Deploy a bomb, wait about a second, then deploy a second bomb. The first bomb you deployed should send you into the air. While in the air, immediately before the peak of your jump, deploy your third and final bomb. As you descend again, the second bomb you deployed should once again send you airborne, while the third bomb that is in the air should send you up even higher. With some practice, this should come naturally. Remember that timing is key.

Hint: Get Baby Metroids to do your dirty work:
Go to the first part of the lab area with all the Shadow Space Pirates, on the way to get the Gravity Suit. You will find a large number of Shadow Pirates and a single Metroid in a tank. Ignore the Pirates and shoot a single missile down at the tank. If you can hit it, the Metroid will spring forth and start to devour the Pirates quickly, saving you the trouble of wasting time, ammunition, and health. Note: Do not get too close to the Metroid or it will attack you instead.

Hint: Get unreachable power-ups:
If energy or ammunition is out of your reach, aim and charge your beam. The energy or ammunition will come to you.

Charging any arm cannon weapon will attract energy and missile ammunition to you. However, different weapons have different reaches. The default Power Beam seems to have the furthest reach, while the Wave Beam seems to have the weakest. Keep this in mind when some power-ups do not seem to come to you while using this technique.

Hint: Heat wave:
Shoot any beam weapon repeatedly for about thirty seconds. When you stop, a heat wave can be seen in front of the arm cannon.

Hint: See Samus' reaction:
To see Samus' reaction within the helmet inside of the reflection, charge and shoot directly at the ground. Note: Try this in an icy place.

Hint: Classic Metroid: Samus without suit:
Successfully complete the classic Metroid game under two hours to view Samus without her suit during the ending sequence.