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This page lists content within the Metroid series that did not make it into the final version of the game it was intended for.


  • A Fake Ridley similar to Mini-Kraid was scrapped.
  • Unused sprites exist showing Samus running to the left and the right, showing both sides of her body in detail. In the final game she only has one sprite facing in the same direction.

Super Metroid[]

Image taken from the History Timeline of the Zero Mission Note the differences in the HUD and in Kraid's and Draygon's statues.

  • Three unused creatures named Stoke, Bang and Reflec were scrapped for unknown reasons. They can be accessed via hacking the SNES ROM using the game editor, SMILE.
  • One room exists in Norfair, but was made inaccessible prior to the game's final release. The room, once again, can be accessed via SMILE. Upon using the Test feature, the room itself seems to be in Ridley's Lair, but the door cannot be accessed but can open, falling down the hole will either bring you to the top of the room or go through the door, revealing that it goes to the room with the Golden Pirates in the room before the elevator in Lower Norfair, however the player will get stuck and can't pause the game, resulting in restarting the game.
  • An unused block, represented in SMILE by half a Ripper (and so nicknamed the "half-Ripper block"), which would block all movement from enemies and shots (except the Wave Beam) but could be passed through by Samus herself. Possibly unused due to making secret-hunting unnecessarily difficult, as the only way to discover this block would be to collide with it directly.
    • Although this block is unused, there is a room in Lower Norfair that allows Samus and the Wave Beam to pass right through, but, when viewed with the X-Ray Scope, it still appears as a regular wall.
  • The "Acid Statue Room" in Lower Norfair had its upper half change before the final game's release.
  • During the Game Over sequence, Samus was briefly nude, with a voice by Minako Hamano, though these elements were reconsidered due to American sensitivity to nudity and the voice sounding too sexual.
  • An unused options menu is accessible through a Game Genie code.
  • Unused credits were discovered by hacking save states: Keiko Tamura, Takehiro Izushi, Isao Hirano, Kenichi Sugino, Ryoji Yoshitomi, Yoshinori Katsuki, Genji Kubota and Hiroshi Yamauchi. With the exception of Yamauchi, who was the executive producer, the precise order of these credits is unclear.

Metroid Fusion[]

2000 video[]

In an early trailer of Metroid Fusion, the original design of the B.S.L. Research Station looks quite similar to the G.F.S. Olympus' design.

Prerelease video 1[]

The unused room that contained zombie researchers in the trailer.

  • The game had a different Title Screen that resembled the final, although was not placed in a space background.
  • A different health bar is shown on the top left corner of the screen along with a health counter, with up to 100 health per Energy Tank.
  • A "Heart Monitor" is present beside the minimap, which may have been to warn Samus of the presence of X Parasitea.
  • The X themselves are colored purple and their sprites appear to have been reused from the Boyon from Super Metroid.
  • Samus can be seen running from several Skrees, which do not appear in the final game. Their graphics also appear to have been reused from Super Metroid.
  • The doors on the station are all silver and open automatically, much like that on Ceres Space Colony.
  • Sidehoppers were originally colored red (considering they were seen in Sector 3, it is possible that this was to help it adapt to its surroundings).
  • Uninfected Wavers in the background could enter the foreground when infected and mutated by X Parasites, much like the Hornoads from X Spawns in the final version.
  • Samus can be seen in a room that does not appear in the final game (though can be accessed by hacking), using a Power Bomb to destroy differently colored zombie Researchers. Worthy of note is that unlike the final game, the explosion does not suck in X.
  • Samus can be seen killing several Hornoads with what may be the Spazer Beam or an early Plasma Beam.
  • The Yameba were colored yellow and purple rather than blue and green.
  • When exiting the Starship, a message saying "STAR SHIP" will appear. This does not happen in the final game.
  • The Ladders, Geron Air Systems, and Blast Shields have different sprites.
  • The Missiles have different sound effects.
  • Samus can be seen Wall Jumping in an unknown location.
  • In the final scene, the ladders again possess different sprites, and Samus can be seen in a location that may be the Main Deck, either after Neo-Ridley's chamber or on the way to Arachnus. Several small, round glowing objects can be seen in different places.
  • The code contains an unused sprite of the Yard's shell from Super Metroid.

Prerelease video 2[]

Unused content[]

Fusion mysteryplatform.png

SA-X's unused walking animation. (Source)

  • An unused platform sprite appears multiple times in the object list.
  • The SA-X has an unused walking animation.

Scrapped enemies[]

Skrees (which were shown in trailers) and Geegas exist as enemies in the game's data, behaving much like their non-X counterparts. Worthy of note is that the Skree's main attack no longer killed them. They would quickly burrow out of the ground from under Samus and launch back up to the ceiling, to repeat the attack. Geegas also spawned from the ground, though this may be due to a lack of Air Holes in the game. Sprites were also found for a type of wasp nest and a green, gaseous entity. A hack in 2016 has reprogrammed these creatures back into the game, as mostly functioning enemies.[1][2]

Metroid Prime[]

  • The title theme was different in an earlier version.[3]
  • Samus Aran could have had dialogue in Metroid Prime, and Retro Studios ran tests, but decided it did not suit the game.[4] Recordings from at least a dozen actresses were sent to the audio lead, Clark Wen for consideration, including from Gabrielle Carteris.
  • Phendrana Drifts had a different theme than the original.[5]
  • The opening cutscene's music had changed to a more classic Metroid-sounding melody than before.[6]
  • Rippers were intended to appear, but were replaced by Gliders. Their model remains present in the game's data, and can be restored into the game via hacking.
  • The Arm Cannon formations for the Ice Beam and Wave Beam were different in an earlier version of Prime. They can be seen in the gallery below. They were modeled by Chris Voellmann and skinned by Gene Kohler.
  • An enemy similar to a Kihunter was scrapped.
  • Maggot-like creatures appear in Impact Crater and Nintendo concept art and have an unused scan image.
  • Kraid was scrapped as a boss in an unknown area of the Phazon Mines due to time constraints.
  • An animation of a large creature was present on the website for Derek Bonikowski, and in concept art by Greg Luzniak. The file name of the video referred to it as "IceBoss".[7]
  • The game was first shown as a 3rd person shooter. The HUD and Samus's Arm Cannon looked different.
  • The Parasite Queen was originally to be fought in a more open arena, where it would crawl on walls and floors.
  • An unused monologue by a female voice narrating the events of Metroid was to be heard during the intro. According to Clark Wen, it was recorded by Nintendo EAD, who asked him to implement it in the game, but then asked for its removal as they disliked it.[4]
  • Artwork released in the Metroid Prime Trilogy art booklet shows different beam formations, the classic beam symbols (a creature holding a ball with the first letter of the beam's name) would be used instead of capsules containing energy, another type of Charge Meter and the Spazer Beam was also shown.
  • The Gunship was originally known as the "Stealth strike corvette" rather than the Hunter-class name used ingame.
  • A suit with a purple and greenish color scheme has been found in the game's data, later confirmed to be an unused version of the Phazon Suit.
  • Metroid Prime and Metroid Fusion: Prima's Official Strategy Guide contains a lot of artwork that is not present in the game's gallery. Some of it consists of species not seen in the game, such as a green Shriekbat that may have been intended to be a Skree, a mechanical Puddle Spore, a green Sentry Drone, an X-ray of a lizard-like creature, and a red Shriekbat.
  • Thardus was originally meant to be in a "large lava pit arena" in the Magmoor Caverns before it was changed to the Phendrana Drifts Quarantine Cave due to time constraints.
  • Concept artwork of Samus depicts her Varia Suit in its appearance in later Prime games, suggesting that it may have been a scrapped design that was later revisited.
  • Phazon's origin was explained in an unused image as being the physical energy of the Metroids Samus killed on her Zero Mission. In actuality, it originates from the sentient planet Phaaze.

Samus expressions[]

There are a number of unused animations for Samus making various facial expressions in the HUD. The purpose of these animations and whether they were intended to be seen is unknown.

Metroid: Zero Mission[]

  • The code contains a left out Crocomire sprite, which can still be accessed by hacking the ROM, though it has no death sequence and is seemingly unfinished.
  • Two debug features are also present within the code. It was originally intended that the ability to toggle items on and off would return from Super Metroid. The second is where Red Hatches were vulnerable to five Missiles rather than one in the final game as in previous games.
  • The game's art style was originally a "cartoony" version similar to the original Metroid.[8]

Metroid Prime 2: Echoes[]

Early screenshot showing the Dark and Light Beams in Samus' possession during the first Dark Samus fight.

E3 2004 trailer[]

Samus is briefly depicted, while tracking an Ing, with a purplish hand on her Arm Cannon, possibly indicating she was to obtain the Gravity Suit.

  • A multiplayer stage with lava was depicted, with a strange pillar coming out of the lava.
  • A Pirate Trooper, when frozen, would not be surrounded in a purple sheen and Entangler particles; rather, a shell of ice like in Metroid Prime. The Pirate would also be frozen to the floor, with the ice on the floor remaining after death.
  • Samus' model from Prime was to be reused in Echoes.
  • In the fight at Mining Station A, the Pirate Commandos there would first be possessed by Ing rather than the Portal Terminal in the final game.
  • The Missile Launcher's configuration was to be the same as Prime in that four sections split from the nozzle of the Arm Cannon.
  • A black Luminoth was seen in the Portal Terminal. Textures for this design still exist within the data of the final game.
  • Samus would have had the Dark and Light Beams during the first Dark Samus battle.

Metroid Prime Hunters[]

  • Interviews stated that the game was going to have segments where Samus could fly her Hunter Gunship, but this did not happen due to pacing issues.[12]
  • As evidenced by its file name "PowerBomb_Model", the Trocra was originally intended to be a Power Bomb, although this was scrapped for unknown reasons.
  • Sylux,[13] Trace,[14] Noxus,[15] Weavel[16] and the Guardians[17] all have unused introduction music.
  • A sickly-colored Ithrak was scrapped.
  • Certain animations had much more precision to them than what is seen in the final game.
  • In an interview with Shinesparkers, Richard Vorodi indicated there were unused names and designs for the Bounty Hunters by the end of development. He declined to share any of them, however, except to say that Noxus was originally called "Nox".[18]

Prerelease videos[]

Unused text[]

WARNING: hostiles detected.OCTOLITHS are likely to be heavily guarded. proceed with caution.

WARNING:long-range sensors detect warp signatures of stealth-class spacecraft approaching the ALIMBIC sector.

WARNING:subspace intercepts suggest the presence of bounty hunters in ALIMBIC territory.

GUNSHIP TRANSMISSIONwarp signatures of at least four bounty hunter vessels confirmed.

GUNSHIP TRANSMISSIONanalysis of telepathic transmission from TETRA GALAXY complete. unable to validate any source of ULTIMATE POWER.

GUNSHIP TRANSMISSIONorigin of telepathic message identified as prisoner GOREA. threat analysis: strategic lure for an unwitting liberator.

GUNSHIP TRANSMISSIONGOREA must not escape. all measures necessary to contain this threat are authorized.

top screenvarious hostile forces in pursuit of $ULTIMATE POWER.$ $EXTREME CAUTION$ is advised.


GUNSHIP TRANSMISSIONWARNING! unidentified vessel detected in docking bay alpha seven. $EXTREME CAUTION$ is advised.


SAVE STATIONwould you like to save your progress?

GUNSHIP TRANSMISSIONsevere timefield disruption detected in the vicinity of the $ALIMBIC CLUSTER.$

GUNSHIP TRANSMISSIONsensors detect the proximity of an ALIMBIC ARTIFACT.

E3 2004 demo[]

  • An early form of the Stasis Bunker is the only map playable in the E3 2004 multiplayer demo of Hunters as "MAP - 01".[20] The same room is also appeared in Metroid Prime Hunters: First Hunt and the final version, and is named as "e3level" in the game's code, which was originated from the E3 demo.
  • On screens that prompt the player to "Touch here to return to the title screen" and "Touch here to start", unknown planets are shown.[20]
  • The "Player Log-on" screen looks similar to the Inventory screen in Metroid Prime.[20]
  • The bottom of the top screen shows messages during the match, such as "Warning : Energy Low", "Player 1 was killed by Player 3", "You eliminated Player 3", and "You were decimated by Player 1".[20]

Metroid Prime 3: Corruption[]

  • Rundas was first known as "Rundus" and his voice was different than the final version of the game.
  • In the original trailer, the Meta Ridley fight was shown to have more Energy Tanks during E3 but was deducted in the final version. It also shows the Hunters in peril while being corrupted after being fired upon by Dark Samus; however, this scene was scrapped for unknown reasons.[21]
  • Storyboards show that the Game Over was going to be in the vein of Super Metroid, Metroid Fusion and Metroid: Zero Mission, in which Samus' suit explodes/dissipates.
  • Artwork released with the Metroid Prime Trilogy art booklet shows a fourth corruption stage, that heavily resembles Dark Samus.
  • Artwork also shows Samus with a damaged suit, missing her helmet and one of her Varia Suit's shoulder pads.
  • A leaked prototype of Corruption, dated from March 2, 2006, was developed to run on GameCube SDK units with additional RAM. Oddly, the game's introduction can be played with a GameCube controller. The prototype includes several debug options.[22]
  • There are a number of unused Logbook entries, including lore that is only available in German.


  • Amanda Rotella shared a render of a plant-like creature that is not seen in the game, and is likely unused.

Metroid: Other M[]

Developer screenshot showing a young Samus with black hair.

  • D-Rockets was said to have been working on a cutscene for two months before it was eventually cut in favor of a gameplay action.[23]
  • The Queen Metroid does not have her signature head-lunge attack from Metroid II: Return of Samus. Concept art for her seems to indicate that it was once planned.
  • In an early trailer for Metroid: Other M shown during E3 2009, Samus is seen fighting a Zebesian with no cybernetic enhancements, though these are never seen in game.
  • In the same trailer, Samus is seen having a total Missile count of 105, though in game the most Missiles Samus can have is 80.
  • Concept art seems to depict the Dragotix with a tongue as well as a smaller offspring; though neither are ever seen ingame, artwork of MB also has unused designs of her hairclip.
  • A demo version of Other M featured in the 2010 editions of Game Developers Conference and Nintendo Media Summit has a different font in the game's subtitles, unlike those found in the final version.[24]
  • There is a rather large amount of unused dialogue in the game's data. Some of it features the characters uttering "What the hell" and "Damn it!".[25]

Metroid Prime: Federation Force[]

"Multiple mutations will cause a Metroid to grow into an even larger and more powerful adversary."

Please help improve this article or section by expanding it.
Much more information can be added to this article.

Metroid: Samus Returns[]

"Multiple mutations will cause a Metroid to grow into an even larger and more powerful adversary."

Please help improve this article or section by expanding it.
Much more information can be added to this article.

Metroid Dread[]

  • Unused text exists in the Japanese localization, which appears to summarize the content of cutscenes, including details that are implied but not confirmed. For instance, there is a short summary that confirms Raven Beak was impersonating ADAM throughout Samus's mission. It is possible that this text was provided by Nintendo when dictating the story to MercurySteam, who would then create cutscenes based on the content of the text.[29]


  1. ^
  2. ^
  3. ^ Metroid Prime (Beta Version) - Title (19 Jul 2008). Retrieved on 2011-11-18.
  4. ^ a b Kerwin, Darren, RoyboyX. "Interview: Clark Wen", Shinesparkers, 2018-06-02. Retrieved on 2018-06-02. 
  5. ^ Metroid Prime (Beta Version) - Phendrana Drifts (19 Jul 2008). Retrieved on 2011-11-18.
  6. ^ Metroid Prime (Beta Version) - Distress Signal (19 Jul 2008). Retrieved on 2011-11-18.
  7. ^ Metroid News - Phendrana Drifts had another BOSS in beta! (12 Aug 2010). Retrieved on 2011-11-18.
  8. ^
  9. ^
  10. ^
  11. ^ Kerwin, Darren, RoyboyX. "Interview: Jack Mathews", Shinesparkers, 2018-01-20. Retrieved on 2018-01-20. 
  12. ^
  13. ^
  14. ^
  15. ^
  16. ^
  17. ^
  18. ^ "At the end of Hunters there were a bunch of unused names for the hunters. Sometimes we came up with names betters suited for them as they evolved, or other issues prevented us from using them. We had some neat ones. Maybe one day those names will get dusted off and used again along with the unused Hunter designs!" Interview: Richard Vorodi, Shinesparkers, 2020-08-06. Retrieved on 2020-08-06.
  19. ^
  20. ^ a b c d United Games Videos: Metroid Prime Hunters, Nintendo DS, E3 2004 Video
  21. ^ Metroid Prime 3 Corruption E3 Demo - Introduction Trailer (5 Jun 2006). Retrieved on 2011-11-18.
  22. ^
  23. ^ "Kitaura said that there were times when his team would work on a cutscene for two months straight, only to have it scrapped and replaced with an in-game action."
  24. ^ Metroid: Other M intro (Nintendo Media Summit 2010) (27 Feb 2010). Retrieved on 2011-11-18.
  25. ^
  26. ^ a b Metroid Prime: Federation Force E3 Trailer
  27. ^ a b c d e f g h Nintendo (16 June 2015). Nintendo Treehouse Live @ E3 2015 Day 1 Metroid Prime: Federation Force. YouTube. Retrieved on 03 October 2018.
  28. ^ GameXplain (11 March 2016). 6 Minutes of Metroid Prime: Federation Force - Space Pirate Warship Battle (3DS Gameplay). YouTube. Retrieved on 18 January 2019.
  29. ^ "DIAG_ADAM_FINAL_PH_PAGE_05" - サムス、アクセスルームのモニターを破壊する。 ミッション冒頭に意識を失ってからこれまで話してきたアダムは本物ではなく、レイヴンビークだったのだ。 ("Samus destroys the access room monitor. The Adam that she's spoken to since she lost consciousness at the beginning of the mission wasn't the real thing, it was Raven Beak.") Retrieved from