An existing theme (often calm, ambient music or otherwise unsuited for fighting) is rearranged for a BossBattle or TheVeryDefinitelyFinalDungeon. Generally faster paced and instrumental. If the original was happy-sounding, the remix will often be in minor key, too.

See also BattleThemeMusic. May be a source of AwesomeMusic. Common in a ThemeAndVariationsSoundtrack. Not to be confused with a remix that is [[SugarWiki/AwesomeMusic totally boss]] (though these tend to overlap very often), or a [[TookALevelInBadass boss that has had its abilities remixed]].


[[folder:Action Adventure]]
* ''Franchise/TheLegendOfZelda'':
** Each phase of the final battle of ''VideoGame/TheLegendOfZeldaMajorasMask'' uses a different remix of [[{{Leitmotif}} Majora's Theme]].
** Inverted in ''[[VideoGame/TheLegendOfZeldaTheWindWaker The Wind Waker]]'' with the "stormy night" theme (heard when the entirety of the Great Sea is cursed with an endless night and downpour), being a combination of the overworld theme and Ganondorf's theme (so a boss theme is implemented within a stage theme). It's eventually played straight when the music of the final battle against the aforementioned Ganondorf incorporates his {{leitmotif}} into the battle version.
** ''VideoGame/TheLegendOfZeldaTheMinishCap'' has this in the battle against Vaati's first (referencing his own theme) and final (referencing the game's main theme) forms.
** In ''VideoGame/TheLegendOfZeldaTwilightPrincess'':
*** The ThemeMusicPowerup during boss battles is a remix of the Hyrule Field theme.
*** Stallord, a dinosaur/dragon skeleton, fittingly uses remixes of "Dinosaur Boss Battle" from ''Ocarina of Time''.
*** As Zant serves as a FinalExamBoss, he gets several themes, which are each a mix of the original music of whichever boss or mini-boss he's currently mimicking and his own {{Leitmotif}}, before finally descending into a frantic, sped-up version of his original theme.
*** The fight against [[spoiler:puppet Zelda]] is a remix of Ganondorf's theme and [[spoiler:Zelda's Lullaby]]. The final boss theme incorporates snippets of Ganondorf's theme.
*** The [[KingMook Shadow Insect Queen]]'s theme is a remix of the Twilight {{mook}} battle theme.
** ''VideoGame/TheLegendOfZeldaPhantomHourglass'' has a remix of [[spoiler:Linebeck's theme]] for the final battle, with snippets of Bellum's Theme mixed in to emphasise [[spoiler:the former's possession by the latter]]. Prior to that, the maritime battle with the Bellum-possessed Ghost Ship is accompanied by a sinister remix of the overworld music.
** ''VideoGame/TheLegendOfZeldaSpiritTracks'':
*** Byrne's battle theme is a remix of his {{Leitmotif}}.
*** [[spoiler:Cole's theme]] is remixed for the first phase of [[spoiler:Malladus' beast form]], followed by an epic remix of the [[spoiler:[[MagicMusic song used to weaken him]]]] in the second phase, which itself is a remix of the game's main theme.
** The first battle theme of Levias in ''VideoGame/TheLegendOfZeldaSkywardSword'' is a remix of Skyloft's theme, while the second is a remix of The Sky's theme. Also, Ghirahim's battle theme is a remixed rendition of his {{Leitmotif}}.
** Yuga in ''VideoGame/TheLegendOfZeldaALinkBetweenWorlds'' is fought to a remix of his {{leitmotif}}.
** ''VideoGame/TheLegendOfZeldaBreathOfTheWild'':
*** The Divine Beast Vah Ruta fight uses a dramatic variant of Prince Sidon's theme because he is helping you fight it. The Divine Beast Vah Medoh fight uses a mix between the Flight Range minigame theme and the opening portion of the Rito Village theme. And the Divine Beast Vah Naboris fight uses a bit of Urbosa's theme because her descendant Riju is helping you fight it.
*** Monk Maz Koshia's music is a remix of the shrine battle theme.
* The boss fights against BrainwashedAndCrazy Richter Belmont in ''VideoGame/CastlevaniaSymphonyOfTheNight'' and Richter's ghost in ''VideoGame/CastlevaniaPortraitOfRuin'' are both set to remixes of Richter's theme from ''VideoGame/CastlevaniaRondoOfBlood''. Also used in ''VideoGame/CastlevaniaAriaOfSorrow'', where the stage music "Heart of Fire" from the old NES game was turned into an [[ awesome boss theme]].
* ''VideoGame/CreepyCastle''
** The boss theme of Madam, "Persona Non Grata", is a remix of "Moonlight Sonata" which play where you finds her.
** The themes of [[spoiler: the shadow bosses]] in The Final Fist are remixes of previous boss themes.
** The Destroyer is a medley of various themes from the game including "Welcome to Creepy Castle", "All That Remains Is To Fly", "Due Exaltation", "The Darkest Inflection" and "Wanting All The Things You'll Never Have".
** Inverted with the theme "Preludium for the Lost" which is based on the boss theme "Concerto for the Lost".
* In ''VideoGame/RatchetAndClankUpYourArsenal'', the battle theme for [[spoiler:Courtney Gears]] is a remix of [[spoiler:her music video, "Death to Squishies"]].
* ''VideoGame/LaMulana'' is all over this trope. Each boss theme contains elements of the music for the area in which they are located. Also, the final battle is a remix of the Surface theme with parts of the Gate of Guidance thrown in.
* ''VideoGame/NieR'' has the Song of the Ancients, a relatively mellow song which appears several times throughout the game. It reappears during some boss fights with a darker, more combat-suited tone, most notably during the fight with the Betrayers, [[spoiler:Devola and Popola, who incidentally are the ones who introduced you to the song early in the game.]]
* The boss music of ''Videogame/{{Drakengard 3}}'' are generally techno remixes of the regular stage themes. The music for the TrueFinalBoss is a mix of all the scores in the game.
* ''VideoGame/KidIcarusUprising'' has [[ Boss Theme 2]], which plays during the battle with Medusa [[spoiler:and Palutena later on]]. It has part of the underworld theme from the original game, as well as OminousLatinChanting. Also, [[spoiler:Hades']] {{Leitmotif}} is remixed into both the music for several levels and his battle music.
* ''VideoGame/MetroidPrimeTrilogy'':
** The FinalBoss themes in the first two games are distorted, vastly more intense version of the games' respective title screen themes.
** In ''VideoGame/MetroidPrime'', the boss music when fighting the Parasite Queen is a faster version of the moody, suspenseful BGM heard in the Space Pirate Frigate. Later, the Omega Pirate's theme is a slower remix of the Chozo Ghost/Elite Pirate battle theme.
** In ''VideoGame/MetroidPrime2Echoes'', Amorbis's theme is a remix of the Parasite Queen theme, and Quadraxis's theme is the Ing battle theme remixed.
* The first phase of the fight against [[spoiler:Greg Nightmare]] in ''VideoGame/{{Killer7}}'' is a somber remix of the Elementary School stage (the setting of the second half of the sixth chapter, Smile).
* The battle against [[BigBad Alexander Volks]] in ''VideoGame/{{Geist}}'' is a boss remix of the game's main theme. Notably, it's first heard near the end of chapter 4 (Medical), when Raimi is escorting Bryson while confronting numerous enemy soldiers.
* ''VideoGame/CreepyCastle'':
** The boss theme of Madam, "Persona Non Grata", is a remix of "Moonlight Sonata" which play where you finds her.
** The themes of [[spoiler: the shadow bosses]] in The Final Fist are remixes of previous boss themes.
** The Destroyer is a medley of various themes from the game including "Welcome to Creepy Castle", "All That Remains Is To Fly", "Due Exaltation", "The Darkest Inflection" and "Wanting All The Things You'll Never Have".
** Inverted with the theme "Preludium for the Lost" which is based on the boss theme "Concerto for the Lost".

[[folder:Action Game]]
* In the original ''Franchise/DevilMayCry'', the final battle with Nelo Angelo incorporates sections of Sparda's theme, heard in the game's introduction.
* In ''VideoGame/{{Onimusha}}: Dawn of Dreams'', Munenori Yagyu has his own battle theme. During the final battle against Jubei it becomes a remix of Jubei's and his own theme.
* The final boss of ''VideoGame/NoMoreHeroes'', [[spoiler:Henry]], uses the theme "We Are Finally Cowboys", a remix of the main theme. In the sequel, ''[[VideoGame/NoMoreHeroes2DesperateStruggle Desperate Struggle]]'', when you do get to play as [[spoiler:Henry]] in his boss fight against [[spoiler:Mimmy]], the Golden Brown remix of "We Are Finally Cowboys" plays during the fight.
* In the [[VideoGame/GodOfWarIII third installment]] of the ''VideoGame/GodOfWarSeries'', the final boss battle with Zeus has [[ this song]] that contains sections from [[ Zeus Wrath Divine]] from the first God Of War and [[ The Isle Of Creation]] from VideoGame/GodOfWarII. Both remixed themes appeared in final boss battles of their respective games.

[[folder:Beat Em Up]]
* In the arcade version of ''VideoGame/DoubleDragon II'', Willy's battle theme is a sinister remix of the title theme. The final battles of ''VideoGame/DoubleDragon 1'' and ''Super Double Dragon'' [[ThemeMusicPowerUp reused the title theme straight]]. The main boss theme in the NES version of ''DD II'' is a remix of ''DD 1 Arcade'''s boss music. Inversely, Burnov's theme from the arcade version got used for the Trap Room level in the NES version.
* In ''VideoGame/DoubleDragonNeon'', [[ Skullmageddon's theme]] is a remix of the [[ second cave theme]](also Linda's Vs. mode theme) from the NES version of ''DD 1'', and [[ Mecha Biker's theme]] is the main theme remixed InTheStyleOf ''VideoGame/MegaManClassic''.
* The boss theme of the ''VideoGame/{{Battletoads}}'' arcade game is a remix of the first stage's theme.

[[folder:Fighting Game]]
* ''VideoGame/SuperSmashBros'':
** In ''Melee'', the Final Destination stage has [[ a boss remix]] of [[ the first Smash's credits theme]]. A [[ special arrangement for Giga Bowser]] also exists.
** The music on the Final Destination stage in ''Brawl'' (where, as the name implies, the final battle takes place in Classic mode) is a Boss Remix of the title theme.
** The [[ Boss Rush]] battle theme is a remix of Melee's menu theme. It's not as intense as the Melee Battlefield's own boss remix of the theme, though.
** The "regular" boss fights during the Subspace Emissary mode in ''Brawl'' also feature a remix of the game's main theme. That song comes up a ''lot'' throughout the game.
** One of the alternate songs on ''Brawl's'' Final Destination stage is a boss remix of ''Melee''[='s=] opening theme.
** Cruel Brawl has its own boss remix of Brawl's main theme, only played in that mode. This theme returns in ''3DS/Wii U'' as the Cruel Smash[[note]]The game's equivalent to Cruel Brawl[[/note]] theme.
** ''3DS/Wii U'' inverts this by having the main "main menu theme" be a remix of the song "Battlefield", commonly considered to be the theme song to ''3DS/Wii U''.
** On ''3DS/Wii U'', while there are remixes of the main theme for Final Destination, Master Hand and Crazy Hand get a different remix of the main theme for their own for the first time. TrueFinalBoss Master Core also has a more intense remix of its own, and so do both phases of Master Fortress.

[[folder:First Person Shooter]]
* In ''VideoGame/PerfectDark'', [[ final battle's music]] features the game's main theme.
* In ''VideoGame/PerfectDark Zero'', the music for the second and last fight against Maihem is a combination of the game's main theme and Maihem's theme. The music for the final showdown begins with a remix of the original ''Perfect Dark'' theme.

[[folder:Light Gun Game]]
* In the ''VideoGame/TimeCrisis'' series, Wild Dog's battle theme is an intense remix of the series' main theme. The second game rearranges "Deadly Fight" (Diaz's theme) for the final battle with the DoomsdayDevice.
* In ''VideoGame/HouseOfTheDead 2'', the Magician's theme is remixed with an OminousPipeOrgan intro. The Magician's theme itself is a remix of the series theme.

[[folder:Mecha Game]]
* ''[[VideoGame/ZoneOfTheEnders Zone of the Enders: The Second Runner]]'' has "Air Fight," played during an epic battle between Jehuty and the BAHRAM fleet (and one of few [sane] times you can use your WaveMotionGun in combat). It's a rearrange of the opening song, "Beyond the Bounds."

[[folder:Platform Game]]
* ''VideoGame/DonkeyKong64'' uses a fast-paced (synth) orchestral arrangement of the level's theme (many qualify as ambient in their standard rendition) for the boss of each stage. Since K. Rool is fought in a completely new area, his battle theme instead remixes his leitmotif and adds parts of the HubLevel theme into the mix. "Boss remix" has been used as a descriptor for fan made arrangements done in such a style.
* In ''VideoGame/DonkeyKongCountry2DiddysKongQuest'', the boss theme is a remix of both the map screen theme and the rigging-level theme.
* ''VideoGame/BanjoKazooie'':
** The first and second games have one of these for each individual world's theme (except in the levels of the first that have no boss), with the exception of the last two in ''Tooie''. The penultimate level, Cloud Cuckooland, features a boss remix of the [[spoiler:Mumbo's Skull]] music.
** In the first game, the Final Battle soundtrack is a combination between Gruntilda's theme, ''Mad Monster Mansion'' and ''Rusty Bucket Bay'', in that order. In ''Banjo-Tooie'', the final battle is a new melody, but features Gruntilda's theme. ''Banjo-Kazooie: Nuts & Bolts''' challenge music is also a remix of Gruntilda's theme, and the scrapped [[ final challenge music]] (which is part of the game's soundtrack) is an epic combination of Grunty's theme remix and the ''Banjo-Kazooie'' main theme.
* In ''VideoGame/Wild9'', the last level has the same music as the first, only in a lower key and extended.
* The final boss fights for ''VideoGame/SonicTheHedgehog2006'' and ''VideoGame/SonicUnleashed'' both use orchestral arrangements of their respective games' main themes.
** In the former, the leitmotifs for the four villains are constantly rearranged for their cutscene and boss battle appearances. This is retained for Eggman in the latter.
** In the latter, part of the game's theme surfaces in the "Daytime Boss" theme.
** ''VideoGame/ShadowTheHedgehog'' remixes the Black Arms' event theme for Black Doom's boss battle.
** The FinalBoss themes for the [[VideoGame/SonicTheHedgehog first]] and [[VideoGame/SonicTheHedgehog2 second]] Genesis games were remixes of their respective main boss themes.
** ''VideoGame/SonicAdventure'', ''VideoGame/SonicAdventure2'', ''VideoGame/SonicHeroes'', etc... all use the main theme song in their final battles. This applies to most of the 3D games.
** ''VideoGame/SonicColors'' does the orchestral remix of main theme for the second part of the final boss. In the DS version, this music accompanies the Bonus Boss.
** Averted in ''VideoGame/SonicGenerations'', but justified due to that game's lack of a theme song.
** ''[[VideoGame/Sonic3AndKnuckles Sonic & Knuckles]]'' remixed ''Sonic 3'''s Act 2 Boss theme for its Act 1 bosses.
** The fan-made VideoGame/SonicRoboBlast2 inverts this: the theme for the fourth zone is a remix of the boss theme.
* The UsefulNotes/NeoGeo game ''Top Hunter: Roddy & Cathy'' use a remixed version of the current level theme whenever you fight the recurring Miniboss.
* The Battle Windows/Computer Virus in ''VideoGame/KirbySuperStar'' has an 8-bit version of the main boss theme.
** In ''Kirby Super Star [[VideoGameRemake Ultra]]'', Dyna Blade, Wham Bam Rock, and the remake-exclusive Wham Bam Jewel have a boss remix of the Castle Lololo theme from the first ''Kirby'' game, ''Kirby's Dreamland'', instead of the usual boss theme. In the same game, Masked Dedede also has a different arrangement of regular Dedede's theme.
** Inverted within ''Ultra'' as well -- Dedede's boss theme is remixed into a SolemnEndingTheme for the credits sequence after Masked Dedede.
** ''VideoGame/KirbyTripleDeluxe'':
*** The Boss Rematch Theme is a remix of the main theme, the FinalBoss phase 2 theme is a remix of the boss theme, then the third phase is a remix of the Hypernova theme, then the TrueFinalBoss [[spoiler:Sectonia Soul]]'s second theme is a remix of ''that''.
*** Though it's a lot harder to notice, the Miniboss theme is a heavy remix of the TrueFinalBoss music.
*** [[spoiler:Masked Dedede's Revenge]]'s theme is a remix of the original [[spoiler:Masked Dedede]] theme, which was itself a remix of Dedede's theme. [[spoiler:Dark Meta Knight]]'s theme is similarly featured.
** In ''VideoGame/KirbysReturnToDreamLand'', [[spoiler:The FinalBoss Theme is something of a remix medley- It starts with a somber remix of the Nightmare Theme from Kirby's Adventure, then, after a segment of a remix of the game's main theme, progresses into a very sad and dramatic remix of Magolor's Theme, does a bit more Nightmare, and then, in a slightly amusing example, [[SoundtrackDissonance becomes the infinitely cheerful theme song of the series, Green Greens.]] Though it's heavily remixed to become more sad than cheerful, it's still jarring.]]
** A slightly odd example in ''VideoGame/KirbysEpicYarn'', where the Final Boss's theme is a remix of VideoGame/{{Kirby64}}'s boss theme. [[spoiler:And then the Final Boss's ''[[OneWingedAngel second]]'' theme is a frantic sped-up remix of that.]]
** ''VideoGame/KirbyPlanetRobobot'' has an entire ThemeAndVariationsSoundtrack built around the VillainSong "The Noble Haltmann", but the regular boss theme is a straight up BossRemix.
* ''[[VideoGame/WarioMasterOfDisguise Wario: Master of Disguise]]'' has Count Cannoli's slow refined theme become fast and loud when he breaks out his giant robot. Carpaccio's theme also seems remixed for his fights.
* ''VideoGame/{{Klonoa}} 2: Lunatea's Veil'' has what can best be described as a ''reverse'' boss remix -- the boss theme for [[spoiler:Cursed Leorina]] is remixed into a calmer, somewhat emotional theme in the cutscene following the fight.
* ''VideoGame/ViewtifulJoe'''s final boss, [[spoiler:Captain Blue]], uses a remixed version of Captain Blue's theme, which was heard in the sub-boss fights with him early in the game. Another example is [[EvilTwin Another Joe]], who uses a remix of "Joe the Hero", Joe's own theme (as heard in the first level).
* ''VideoGame/MegaManZX'': The final area theme is a remix of the "Sadness" theme featured in cutscenes very early in the game.
* ''Franchise/MegaMan'':
** The Wily Stage boss theme in ''VideoGame/MegaMan3'' is a faster remix of the "Wily Stages 5 & 6" theme.
** Bass's Boss theme in ''VideoGame/MegaMan8'' and his shop theme in ''10'' are remixes of his ''7'' theme.
* The boss themes in ''VideoGame/GhostsNGoblins'' were frantic remixes of the main level themes. ''Super Ghouls and Ghosts'' follows suit, although the boss remixes for levels 3 and 5 were switched for some reason.
* The miniboss themes from ''VideoGame/YoshisIsland'' are remixes of their introductory theme musics, given that all but one are ordinary enemies turned huge by [[TheDragon Kamek's]] magic (the one that didn't had Kamek ''shrink'' Yoshi and Baby Mario instead, who both then get eaten by said boss).
* ''VideoGame/SuperMarioGalaxy'' and ''VideoGame/SuperMarioGalaxy2'':
** In general, both games play this trope straight with [[OverlordJr Bowser Jr.]], whose pre-battle themes actually get remixed into those of "Airship Armada" from ''Galaxy'', and "Boomsday Machine" from ''Galaxy 2'', respectively.
** Inverted with [[BigBad Bowser]] at the end of the first game, where the final confrontation against him is actually set to ''techno music'', but after he is defeated, the first part of his battle theme plays again, but this time 14 more notes are added before the choir (his final boss theme starts with the choir), and then the Sun in which Mario and Bowser fought inside for the final battle collapses and implodes, destroying the entire universe in the process. The final boss theme as a whole (including the 14 notes before the choir at the start) can be heard in the game's official soundtrack, though.
** There's also Squizzard's battle theme from ''Galaxy 2'', which features a remix of the Fire Flower theme.
* The [[spoiler:first]] Bowser theme from ''VideoGame/NewSuperMarioBrosWii'' is actually the main theme played on an OminousPipeOrgan.
* In ''VideoGame/PsychoWaluigi'', the final boss theme against [[spoiler:Psycho Iris]] is a remix of the Waluigi Pinball theme mixed with [[spoiler:Psycho Iris's]] theme. It sounds creepy and quite frantic, perfect for the character that you're fighting against.
* In ''VideoGame/ChuckRock'', the level theme switches to a faster beat when the BossBattle comes up.
* The [[ final boss theme]] of ''VideoGame/TheAngryVideoGameNerdAdventures'' is a more intense version of the [[ normal boss theme]], which itself is a remix of the AVGN's theme.
* Almost every boss theme in ''VideoGame/ShovelKnight'' is a remix of the level theme. The Rival, Black Knight's theme, is a remix of intro level theme "Strike The Earth", each Order of No Quarter knight's boss theme is a remix of their own level, and the battle against [[spoiler:The Enchantress' final form remixes both the main theme and "Requiem of Shield Knight".]]
* ''VideoGame/AHatInTime'' does the ''VideoGame/DonkeyKong64'' and the ''Banjo'' Games way of having its boss themes be fast-paced remixes of the theme of the world the boss resides in.
* ''{{VideoGame/Azure Striker Gunvolt}}'' does this in both games. in the first game, [[spoiler: Asimov's]] boss theme is a remix of the intro stage theme, as well as when you fight Gunvolt as Copen in Tenjian's Stage and [[spoiler: in the first phase of the true final boss fight]] in Gunvolt 2. [[spoiler: Zonda's first fight]] in the second game has a remix of Sinner's Row from the first game.

[[folder: Puzzle Game]]
* ''Videogame/Portal2''. [[spoiler: Wheatley]]'s boss theme, [[ Bombs For Throwing At You]], is a DarkReprise of [[ I AM NOT A MORON]], the track that plays [[spoiler: when Wheatley takes over the facility]].

* ''VideoGame/TheBindingOfIsaac'' has several boss remixes in the ''Wrath of the Lamb'' DLC, along with alternate themes for every alternate version of each "layer" level. These include:
** [[ Unholy Assault]], a remix of Burning Ambush for mini-bosses;
** [[ Crusade]], a remix of Divine Combat used for main bosses;
** [[ Lament of the Angel]], a holy rearrangement of A Mourner Unto Sheol, counterbalancing the hellish Sheol itself with [[spoiler:the Cathedral]].
** And finally, [[ My Innermost Apocalypse]], the FINAL boss theme which uses an arrangement of Isaac's own theme, the main theme of the game. [[spoiler:It's also used for the TRUE final boss]].

[[folder:Role Playing Game]]
* ''[[VideoGame/GrabbedbytheGhoulies Grabbed by the Ghoulies]]''[='=] boss theme is a remix of the game's main theme.
* ''VideoGame/SkiesOfArcadia'' has an arrangement of the main theme [[VariableMix when you are winning]] the final battle.
* Several of the final bosses in ''VideoGame/SagaFrontier'' had this; most noticeable is the final boss theme in Red's Story.
* ''VideoGame/{{Persona 3}}'' has a boss remix of the main theme as you fight the final boss. And a battle rendition of [[spoiler:''Aria of the Soul'', aka The Velvet Room]], for the penultimate boss fight.
** In ''The Answer'' portion of ''[[UpdatedRerelease Persona 3 FES]]'', the final battle theme "Darkness" is a boss remix of the ending theme, "Brand New Days."
** And ''VideoGame/{{Persona 4}}''[='=]s final boss theme, "The Genesis", starts off as a dramatic, brooding piece, but it builds up towards a climax with an orchestral fanfare of "I'll Face Myself", one of the game's major {{Leitmotif}}s (which also happens to have a BossRemix), finally building up to a triumphant finish with an instrumental version of "Reach Out To The Truth", the game's main battle theme.
** ''Persona 3 Portable'' has "Danger Zone," the female protagonist's boss theme, which is a remix of the game's new opening theme, "Soul Phrase." The normal battle theme, "Wiping All Out", is something of a battle remix of "Soul Phrase" as well. In fact, a good deal of the female protagonist's new BGM consists of arrangements of "Soul Phrase" -- similar to how several pieces of the male protagonist's BGM consist of "Burn My Dread" arrangements.
** "Life Will Change" - the music that plays in ''VideoGame/Persona5'' when you're trying to steal a villain's heart - is a remix of the opening theme, "Wake Up Get Up Get Out There". It's faster-paced, and the lyrics are more triumphant, serving as a BadassBoast being made by the Phantom Thieves to the people they're fighting. It overrides the dungeon theme, the safe room theme, and even normal battle themes, so in certain Palaces you're going to be hearing a lot of it.
* Typically occurs in the ''VideoGame/PaperMario'' series, as before each boss encounter, a [[{{Leitmotif}} theme that is specific to the boss]] plays, which is then remixed for the battle. This is most obvious with bosses whose themes play multiple times before the actual fight, such as [[BigBad Bowser, Grodus, and Count Bleck]].
* ''VideoGame/SuperMarioRPG'':
** Several times during the events of game, a town is taken over by a member of the "Smithy Gang", and the music changes to indicate the trouble. When you face the boss, the fight is accompanied by a remix of the 'trouble' music.
** The battle against Smithy's first form is also a remix of the same theme, albeit with all sorts of mechanical sounds added in, along with an OminousPipeOrgan.
** Inverted by the full theme to Bowser's Keep, which incorporates a more slow-paced, ominous remix of his battle music from the beginning of the game (itself a rendition of the final boss theme of ''VideoGame/SuperMarioBros3'').
* ''VideoGame/MarioAndLuigi'':
** The ClimaxBoss fight against Cackletta in ''[[VideoGame/MarioAndLuigiSuperstarSaga Superstar Saga]]'' is accompanied by a boss remix of her theme mixed with the "panic" theme.
** It's somewhat easy to miss, but [[ClimaxBoss Bowser]]'s battle theme in ''[[VideoGame/MarioAndLuigiPartnersInTime Partners in Time]]'' is a remix of the {{leitmotif}} shared by his young and adult selves.
** In ''[[VideoGame/MarioAndLuigiBowsersInsideStory Bowser's Inside Story]]'', [[AttackOfTheFiftyFootWhatever Giant Bowser Battles]] are accompanied by a boss remix of Bowser's theme.
** In ''[[VideoGame/MarioAndLuigiDreamTeam Dream Team]]'', Antasma's {{leitmotif}} is remixed for the first and final battles with him.
** In ''[[VideoGame/MarioAndLuigiPaperJam Paper Jam]]'', the first phase of the final fight against Bowser and Paper Bowser mixes the ''Mario & Luigi'' Bowser motif with the ''VideoGame/PaperMarioStickerStar'' Paper Bowser motif.
* ''VideoGame/TheWorldEndsWithYou'':
** The last battle uses a remix of the game's main theme, "Twister", that is unique to that fight -- unlike all the other boss fights in the game, which use music from the game's regular selection.
** The English version of Someday plays only on the boss battle with Minamimoto; every other time you hear it, it's the Japanese version.
* ''VideoGame/KingdomHeartsII'':
** The three main Organization XIII battle themes (The 13th Struggle, Dilemma, and Reflection, respectively) all feature some element of the song Another Side, which was used in the secret ending to the first game and is the origin of Organization XIII's theme. This also applies to Marluxia's first and third battle themes, Graceful Assassin and Lord of the Castle.
** And for a more obvious example, the Final Boss theme of the original ''Kingdom Hearts'' game, "Guardando Nel Buio", is a remix of the End of the World's battle theme "Fragments of Sorrow", which in turn is a remix of the song "Destati" from the very beginning of the game.
** And for an even more obvious example, the Final Boss theme of ''Kingdom Hearts II'', "Darkness of the Unknown," features ''a remix of itself'': the track is actually broken up into 3 looping portions in the game (which correspond to the last boss[[spoiler:'s 3 last forms]]), with the last third being a slow mix of the previous two.
** "The Other Promise" is used for the fight against Roxas in the second game's UpdatedRerelease, though it's [[SadBattleMusic just as melancholic as his normal theme]].
* ''VideoGame/KingdomHearts358DaysOver2'': The theme that plays during the last stage of the fight against [[spoiler:Xion]], "Vector to the Heavens", is a remixed combination of [[spoiler:her]] theme, [[spoiler:Kairi's]] theme, and the series' RecurringRiff "Dearly Beloved".
** True to the series, ''VideoGame/KingdomHeartsBirthBySleep'' includes several boss remixes:
*** Vanitas' two battle themes are remixes of [[spoiler:Ventus' theme, which in turn is an arrangement of both Roxas' and Sora's themes, with a hint of Xion's.]]
*** "Dismiss", the theme of the TrueFinalBoss, is a remix of "Fragments of Sorrow", this time incorporating aspects of [[spoiler:Terra's theme, Aqua's theme]], and "Destati" into it.
*** Inverted with Terra's theme, which is a slower version of "Rage Awakened", which plays during the BonusBoss fight of ''VideoGame/KingdomHeartsII Final Mix''. [[spoiler:Then comes full circle when it's reused as the final boss theme of his story once Xehanort commits GrandTheftMe and Terra's armor reforms to fight him]].
*** "Master, Tell Me the Truth", the music for the Armor of the Master fight in Final Mix, is a remix of The Land of Departure battle theme with cues from Terra, Aqua, and Ven's themes included.
*** "Forze dell'Oscurità" is a combination of the battle themes for Ansem and Xemnas, and is appropriately used for the battle against No Heart, [[spoiler:the Keyblade Armor of their original joined incarnation]].
** ''VideoGame/KingdomHearts3DDreamDropDistance'' does this once again with "The Eye of Darkness", a remix of the series' traditional "Dive into the Heart" theme used for [[spoiler:Riku's final battle with [[BattleInTheCenterOfTheMind the darkness in Sora's heart]]]].
* In ''VideoGame/ParasiteEve'', [[BigBad Eve]]'s boss battle theme, "Influence of Deep", is a remix of her [[OneWomanWail opera singing]] from the start of the game, with techno music, some instruments, and an OminousPipeOrgan tossed in for good measure.
* ''VideoGame/TreasureOfTheRudra'' has a different BossRemix depending on which character's story the player is currently on, with the remix being of the character's overworld theme.
* The ''VideoGame/TalesSeries'' has a fondness for this.
** "Meaning of Birth" in ''VideoGame/TalesOfTheAbyss'' and Fury Sparks in ''VideoGame/TalesOfVesperia'' qualify. "Irony of Fate" in ''VideoGame/TalesOfDestiny'' is an inversion in that it's a boss battle theme remixed as a sad song when [[spoiler:Leon dies in the Remake]].
** ''VideoGame/TalesOfTheAbyss'' does this more than once. The final two battle themes both contain arrangements of the menu music, and Finish the Promise includes (quite fittingly) a rather epic quotation of the Grand Fonic Hymn.
** The final battle against [[spoiler:Asch]] features the song Meaning of Birth, an orchestral remix of the opening song Karma.
** ''VideoGame/TalesOfSymphonia'' has 3 battles with remixes of character themes. The End of a Thought, which plays during [[spoiler:Lloyd's one-on-one duel with Kratos]], It Can Waver And Fight, played during most fights with the [[BigBad Big Bad]] (as a remix of his theme), and Final Destination, the final boss theme, which is another remix of the Big Bad's theme.
* The final dungeon in the MassiveMultiplayerCrossover action RPG ''Dengeki Gakuen RPG: Cross of Venus'' uses a fast-paced, dramatic and more ''heroic'' remix of the game's opening theme, "Odyssey".
* Both ''VideoGame/BatenKaitos'' games remix the song "The True Mirror" (the first game's normal battle theme) for several boss fights. Most of the plot-important bosses in the first game get an electric guitar version, and [[spoiler:Baelheit]] in ''Origins'' gets an orchestral version, [[spoiler:which subtly alludes to the fact that he's actually a spiriter]].
* The final map theme [[spoiler:for both the normal and demon path]] for ''VideoGame/SoulNomadAndTheWorldEaters'' is a faster version of the title music with OminousLatinChanting. Feinne's theme is also a variant of the title theme.
* ''VideoGame/SuperPaperMario'' uses remixes the theme for Merlee's Mansion for your fight with Mimi, Count Bleck's {{leitmotif}} for your final battle with him, and the themes of [[spoiler:Dimentio, the Chaos Heart, and Mr. L]] for [[spoiler:the FinalBoss, Super Dimentio]].
* The final boss theme in ''VideoGame/PaladinsQuest'' (aka Lennus 1) has a remixed version of the main villain's theme along with the game's main battle theme.
* ''VideoGame/MegaManBattleNetwork'' is no stranger to this trope, but with a twist. The VeryDefinitelyFinalDungeon will usually have a network theme that remixes the game's main theme (as is the case in BN 2, 3, 5, and 6).
** ''Battle Network 2'':
*** The final boss theme is a remix of the normal boss theme. (The final boss themes of most games in that series are remixes of the normal boss theme).
*** The main theme is remixed in the game's bonus area.
*** The tournament battle theme in the ''Battle Network 4" games contains the games' main theme as well.
** The boss battle theme of ''VideoGame/MegaManBattleNetwork 5'' is a remix of the normal random encounter theme.
** The N1 Grand Prix battle theme from ''VideoGame/MegaManBattleNetwork 3'' contains part of the theme that plays during scenes in the tournament, though that theme also includes the game's "sadness" theme, main theme, and possibly. However, it is possible that the N1 Grand Prix theme is the actual remix, since it contains only a portion of the N1 boss theme, Great Battlers.
* ''Franchise/{{Pokemon}}'':
** There's the Frontier Brains of [[ Emerald]] and [[ Platinum]] by heavily remixing the Battle Frontier themes of their [[ respective]] [[ games]].
** Also the Galactic commanders have a remixed version of the grunts' battle song. And Dialga/Palkia's song is the remixed song of the Spear Pillar.
** When fighting a Legendary Pokemon in ''[[VideoGame/PokemonRedAndBlue FireRed and LeafGreen]]'', the Wild Battle theme goes up a pitch. This carries into ''[[VideoGame/PokemonRubyAndSapphire Emerald]]'' as well, which also includes a separate remix for Mew.
** The Champion battle music from ''VideoGame/PokemonGoldAndSilver'' (and ''Heart Gold and Soul Silver'') is a remix of Victory Road from the first games, and the prelude to the main theme.
** Also from ''VideoGame/PokemonGoldAndSilver'': The rival's battle theme is a remix of his encounter theme.
** The [[ Gym Leader Theme]] in ''[[VideoGame/PokemonDiamondAndPearl Diamond/Pearl/Platinum]]'' was remixed for the [[ Elite Four.]]
** The original Champion Battle theme from Gen 1 got remixed for the finals of the (real-life) Gen 5 Video Game Championships. Practically a RecurringRiff. It gets even better when you realize that the Kanto champion theme is a remix of the rival's encounter theme.
** Also in ''VideoGame/PokemonBlackAndWhite'', N's battle theme gets louder, faster, and generally more epic in the final battle with him.
** ''[[VideoGame/PokemonBlack2AndWhite2 Black 2 & White 2]]'' have boss remixes of Hugh's and Colress' themes, in addition to another remix of N's.
** ''Videogame/PokemonMysteryDungeonExplorers of Time/Darkness/Sky'' features a mix between the game's main theme and the {{Leitmotif}} associated with time itself for the final battle against [[MadGod Primal Dialga]].
** In ''VideoGame/PokemonXAndY'', [[spoiler:Lysandre's]] battle theme is an ominous-sounding remix of Team Flare's battle theme, which, in turn, is a remix of their theme song in general.
** The battle with Wally at Victory Road in [[UpdatedRerelease the remakes]] of ''VideoGame/PokemonRubyAndSapphire'', is accompanied by a rock and roll version of his leitmotif.
** Inverted with Maxie and Archie's new theme within the remakes of ''VideoGame/PokemonRubyAndSapphire'' which is a more military-like remix of their main battle theme.
** The Battle Chatelaines of the Hoenn equivalent to the Battle Maison (retroactively added to the remakes of ''VideoGame/PokemonRubyAndSapphire'') uses an updated version of ''Emerald'''s Frontier Brain theme in spite of the Hoenn Battle Frontier being retconned into still being in development by the time the game begins. The reference to the fact that the song itself is a Boss Remix won't be lost on those who had never played Emerald, however, as the Battle Resort, a "spiritual predecessor" to the Hoenn Battle Frontier and the place where the Hoenn Battle Maison was situated at the time of the games, uses a tropical remix of the Hoenn Battle Frontier theme.
** [[spoiler:Lusamine's]] battle theme from ''VideoGame/PokemonSunAndMoon'' is a remix of her normal theme.
* In ''VideoGame/EarthBound'', the "Sanctuary Guardian" theme is a slowed down remix version of "Battle Against a Dangerous Opponent" from ''VideoGame/EarthBoundBeginnings''.
* In ''VideoGame/{{Mother 3}}'', a small part of ''Dry Guys'' is from one of the overworld themes. Also, [[spoiler:the Mother 3 Love Theme is remixed into an incredibly sad, industrial version in the Post Final Boss fight against your long lost brother Claus... It gradually becomes the soft tune you recognize]]. The most remixed song, however, is ''His Highness' Theme'', which is used throughout the game for the major mooks and FinalBoss [[spoiler:Porky Minch]]. In fact, ''Mother 3'' reuses leitmotifs and riffs all throughout the game. Most of the battle themes have a secondary version (which are designed to catch out players who know how to take advantage of the game's 'Rhythm Battle' system), which is essentially the same theme but with a change of some kind in the rhythm at certain points in the tracks (whether through a deliberate glitch in the music to trip the player up, being a faster[=/=]slower version of its other version, or even altering the time signature between versions), so boss battles with familiar battle themes can generally be assumed to use the more difficult version. For instance, compare, with the aid of the [[HeartbeatSoundtrack heartbeat provided when you put an enemy to sleep]], how easy it is to tap along between [[ Mr Passion's first battle theme]][[note]]in spite of the changes in melody, the rhythm remains more or less constant throughout the piece[[/note]] against [[ the theme for the optional rematch against him.]][[note]]which slows down and speeds back up as the melody changes[[/note]]
* ''VideoGame/GoldenSun'': In the first game, the final battle with Saturos and Menardi is accompanied by a remix of their theme. The same goes for the second game, where Agatio and Karst's theme becomes their battle music.
* ''Videogame/{{MARDEK}}'': While [[GiantSpaceFleaFromNowhere regular bosses]] use the standard piano boss battle theme, major antagonists have specific Boss battle themes when fighting them; fighting Muriance the bandit chief changes his main theme into Muriance Battle, the World's Saviours get their theme changed into Saviours Battle, etc. Seems to be a favorite tactic of Pseudolonewolf to reuse certain things from each song... which makes it epic.
* The "Theme of Chaos" and "Theme of Law" from ''VideoGame/ShinMegamiTenseiStrangeJourney'' are given bombastic remix treatments for the endgame battles on the Neutral route with [[spoiler:Awaken Jimenez and Judge Zelenin, respectively]], while the climax of ''The Eternal Throne'' (which, by the way, is the title screen theme) is used as the climax for the theme for [[spoiler:Final Bosses Pillar Zelenin and Mother/Empty Mem Aleph, as well as Pillar Zelenin's Chaos counterpart Soil Jimenez]]. And before ''Strange Journey'', ''VideoGame/ShinMegamiTenseiIIINocturne'' has remixes of LAW and CHAOS (which, themselves, are also remixes of ''VideoGame/ShinMegamiTenseiI'''s Law and Chaos themes) as the boss themes for Metatron and Beelzebub, respectively. ''VideoGame/ShinMegamiTenseiIV'' remixes the Law theme for ''VideoGame/ShinMegamiTenseiII'' for the Archangel boss theme.
* ''VideoGame/FinalFantasyI'' only had the one battle theme which was used from your first fight with imps all the way to the BigBad. However, for the UpdatedRerelease of the game on both the Game Boy Advance and the [=PlayStation=], boss fights had a rearranged version of the basic battle theme (which was already remixed from the 8-bit original).
* ''VideoGame/FinalFantasyII'' uses remixes of the Castle Pandaemonium theme for both its normal battle theme and its boss battle theme.
* The Mysterious Girl's battle theme in ''VideoGame/FinalFantasyIVTheAfterYears'' is an intense remix of her {{Leitmotif}}.
* In ''VideoGame/FinalFantasyV'', Exdeath's battle theme (before he goes OneWingedAngel) is a remix of his character theme. And when he ''does'' go OneWingedAngel, the opening riff takes its cues from his {{Leitmotif}}, before morphing into something much more frantic and fast-paced.
* Dancing Mad from ''VideoGame/FinalFantasyVI''. All sorts of recurrent themes and motifs from other songs along the game get thrown into it, most prominently "Omen", "Catastrophe", as well as Kefka's {{Leitmotif}} and "Fight to the Death" (the music used for the fights against Ultima Weapon and the Warring Triad.)
* In ''VideoGame/FinalFantasyVII'', the final battle with JENOVA: SYNTHESIS has a tense remix of the standard RandomEncounter theme. Also, both "Birth of a God" and "One-Winged Angel" (which play during the first and second parts of the FinalBoss fight, respectively) incorporate Sephiroth's original character {{Leitmotif}}, "Those Chosen by the Planet".
* ''VideoGame/FinalFantasyIX'' has "Sword of Doubt" a battle arrangement of Beatrix's theme, and "Protecting my Devotion" that plays when she and Steiner defend Alexandria from an enemy attack at the beginning of Disc 3. Kuja's theme is remixed as "Dark Messenger" when he's fought at the end of the game.
* In ''VideoGame/FinalFantasyXII'', any fight against a major character from the Archadian Empire would almost always have a remix of the Empire's Theme playing during the battle.
* ''VideoGame/FinalFantasyXIII'' uses some of the lyrics and motifs from the mournful and ominous "Ragnarok," for "Fighting Fate," Barthandelus' battle theme. "Born Anew," the penultimate boss theme, remixes "Primarch Dysley," and the final boss' "Nascent Requiem" references "Vanille's Theme."
* In ''VideoGame/FinalFantasyXV'', the first section of Magna Insomnia, the final battle music, is an epic, high energy version of the game's main theme with BigBad [[spoiler: Ardyn]]'s theme mixed in as an undercurrent.
* "Fusion, descent" from ''VideoGame/FinalFantasyCrystalChronicles'' is a boss remix of the main theme.
* ''VideoGame/PhantasyStarII''[='s=] boss theme ("Hard Place") is a techno remix of the title theme ("Phantasy").
* ''VideoGame/{{Ys}}'' series:
** In ''The Ark of Napishtim'', the Ark {{leitmotif}} (heard in [[ "Defend and Escape"]] and [[ "Revival of the Great Ark"]]) gets an [[ epic remix]] in the second half of the FinalBoss battle.
** In ''The Oath in Felghana'', [[ Chester's second battle theme]] mixes [[ "Theme of Chester"]] with [[ "Chop!!"]], the midboss theme from the UsefulNotes/SharpX68000 port of ''Wanderers From Ys''.
* ''VideoGame/ChronoTrigger'': "World Revolution" [[spoiler:plays during the second phase of the Lavos fight and is a remix of the oddly calm Lavos theme and Crono's own heroic theme.]]
* ''VideGame/EternalSonata'' has, of all things, a remix of [[spoiler:Frederic Chopin's Revolutionary Etude for the final battle against him.]]
* The final boss themes of ''VideoGame/MassEffect1'' and ''VideoGame/MassEffect2'', "Final Assault" and "The Human Reaper," are both remixes of "Sovereign's Theme" from the first game.
* In ''VideoGame/TheElderScrollsVSkyrim'', one of the dragon battle themes is an intense version of the "Dovahkiin" theme heard in the title screen (which is in turn a variation on the main theme of the series.)
* In ''VideoGame/{{Fallout 4}}'' if you encounter a particularly strong opponent, either "Dominant Species" or "Enough is Enough" which are remixes of the main menu theme will play instead of the usual battle theme. The former has a hopeful and uplifting feel while the latter sounds menacing.
* ''VideoGame/BreathOfDeathVII'' remixes the already overly dramatic and elaborate [[ battle theme]] into [[ even harder rock.]]
* The original NES version of ''VideoGame/DragonQuestIV'' lacked a distinct theme for most bosses. The subsequent remakes implemented a remix of the regular battle theme.
* ''VideoGame/{{Undertale}}'': With the exception of the No Mercy boss themes, two of which are based on an original theme and the other being the creator's SignatureSong, all boss themes starting with the second one are this:
** "Bonetrousle", Papyrus's boss theme, is a remix of "Nyeh Heh Heh!"
** "Spear of Justice", Undyne's boss theme, is a remix of "NGAHHH!", and an up-tempo version of "Waterfall".
** Averted with "Metal Crusher", Mettaton's boss theme. [[spoiler:Mettaton EX's boss theme, "Death by Glamour", however, combines "Metal Crusher", "It's Showtime!", and "CORE".]]
** "ASGORE", Asgore's boss theme, remixes "Bergentrückung", "[[GameOver Determination]]", and [[spoiler:"Heartache"]].
** [[spoiler:"Your Best Nightmare", Flowey's boss theme, remixes both of Flowey's Leitmotifs: "Your Best Friend" and "You Idiot". "Finale" is a near constant remix of "Your Best Friend" and if you listen closely you can hear "Memory"/"His Theme" in the bridge.]]
** [[spoiler:"Hopes and Dreams" and "SAVE the World" are primarily remixes of "Once Upon A Time", "Memory"/"His Theme", and "Your Best Friend".]]
** "Song That Might Play When You Fight Sans" is a remix of "sans." with a little "Bonetrousle" in it. [[spoiler:However, [[SubvertedTrope it is]] ''[[SubvertedTrope not]]'' [[SubvertedTrope what plays when you fight Sans]]. Despite being in the official soundtrack, the track is not even present in the game's actual files.]]
* In ''VideoGame/XenobladeChroniclesX'', the first half of [[ aBOreSSs]] is a remix of [[ D91M]] while the [[ second half]] is a remix of the second part of [[ UN↑口and巨DIE]]
* In ''VideoGame/ChildOfLight'', the first mook battle theme, [[ "Dark Creatures"]], and the [[ Serpent Boss theme]], are rearrangements of "Pilgrims on a Long Journey"; the main boss theme, [[ "Metal Gleamed in the Twilight"]], is derived from "Little Girl, Gen"; the second mook theme, [[ "Jupiter's Lightning"]], is a remix of "Magna's Heart"; [[ "Sword of Mars" (Battle Theme 3)]] is a remix of the last third of "Leave Your Castle", and the FinalBoss [[ theme]] is based on Aurora's theme.

[[folder:Shoot Em Up]]
* ''VideoGame/{{Axelay}}'' does this for each stage: The bosses' themes are darker and/or rearranged versions of the level theme, usually in a style that suits the boss. For example, the theme for the {{Humongous Mecha}} boss is more electronic than the stage music.
* Much of the music of ''VideoGame/{{Ikaruga}}'' [[ThemeAndVariationsSoundtrack is just remixes of]] [[ Ideal]]. But when you hear the same theme [[ remixed]] during a boss fight, you know something [[NintendoHard nightmarishly difficult]] and impossibly epic is about to happen. In turn, the Stage 2 boss theme, "Recapture", is a darker arrangement of "Trial", that stage's main theme.
* ''VideoGame/RayCrisis'' selects a musical theme based on what level you start with, and all subsequent level and boss musics are variations of that theme.
* The original ''VideoGame/StarFox1'' has a VERY bizarre version with the alternate final area, remixing real life songs. [[spoiler:The Slot Machine's theme remixes three real life children's songs.]]
* In ''VideoGame/{{Touhou}}'':
** In ''Double Dealing Character'', the theme of final boss [[spoiler:Shinmyoumaru Sukuna]], is a remix of the stage 6 theme.
** ''Legacy of Lunatic Kingdom'' follows suit with [[spoiler:Junko]].
* ''VideoGame/BlueRevolver'' remixes the name entry music for the FinalBoss.
* In ''VideoGame/ThunderForce V'', the Vasteel Original boss fight uses a remix of "Lightning Strikes Again", the intro theme from the previous game.

[[folder:Simulation Game]]
* The theme for ''VideoGame/AceCombatZeroTheBelkanWar'', which appears in snippets and snatches here and there across the soundtrack, gets the full rundown in the final boss fight. A variant is "Alect Squadron" from ''VideoGame/AceCombatXSkiesOfDeception'', starts with a guitar solo and brings the titular piece in partway through.
* ''VideoGame/AceCombat5TheUnsungWar'' pulls this trope with the [[ Ballistic Missile]] returning as the fast-paced theme of the [[ Scinfaxi]] - which itself returns with an added dose of ThePowerOfRock as the theme of the [[ Hrimfaxi]]. Similar to ''Zero'', this game has short snippets of the main theme here and there, most notably in the [[ briefing music for the second half of the campaign]]. Until the final mission, which has a [[ full orchestral arrangement]].
* The FinalBoss theme of ''Videogame/TraumaCenter: Second Opinion'' is a remixed and faster version of the main menu theme.

[[folder:Stealth Game]]
* ''VideoGame/MetalGear''
** ''VideoGame/MetalGearSolid: Twin Snakes'' contains a remixed version of Psycho Mantis' mind control music for his boss battle.
** ''VideoGame/MetalGearSolid4GunsOfThePatriots'': The first part of the final boss has a remix of Encounter from [[VideoGame/MetalGearSolid the first game]].

[[folder: Survival Horror ]]
* ''VideoGame/HauntingGround'' has an interesting version of this. Each of the three stalkers have their own {{Leitmotif}} when chasing you. During each of their boss fights, their particular motif is remixed with a sort of "template". This template remains the same for the first three three bosses, making their themes sound very similar. However, there is a part of the track that distinctively belong to the particular boss (e.g. Daniella's static interferences).
* Alexia's battle themes in ''VideoGame/ResidentEvilCodeVeronica'' were orchestral remixes of "Alexia's Lullaby/Berceuse", with a OneWomanWail as the melody. William Birkin in ''VideoGame/ResidentEvil2'' and Nemesis in ''VideoGame/ResidentEvil3Nemesis'' also use remixes of their themes for each of their mutations.
* ''VideoGame/ResidentEvil6'' has the final boss of Leon's campaign's final form's boss theme be a remix of the main menu theme, of all things. Definitely one of the most unique remixes to be based on it.

[[folder:Third Person Shooter]]
* Boss theme of the videogame adaptation of ''VideoGame/TerminatorSalvation'' is a remix of Terminator's main theme.
* In ''VideoGame/MegaManLegends'', when you face the final form of the big bad the music is changed to something completely different from the first form's theme. In the case of the first game, the tempo was simply increased; in the second game, the theme was changed entirely.
* In the original ''VideoGame/SyphonFilter'', the themes for the [[ battle with Aramov is a remix]] of the [[ Subway]] BattleThemeMusic, the [[ Chopper battle music]] is a remix of [[ Girdeux's battle theme]], and [[ Rhoemer's battle theme]] is a [[ThemeMusicPowerUp powered-up remix]] of the main theme. Also, some of the "boss" themes in ''Omega Strain'' are remixes of previous [[BattleThemeMusic action themes]].
* The first phase of the FinalBoss in ''VideoGame/PN03'' uses a faster, more sinister remix of the main boss music, but unfortunately it's [[LongSongShortScene a wasted song]], as the first form can be beaten in less than 15 seconds.
* ''VideoGame/{{Winback}}'''s FinalBoss battle uses a remix of the main theme, while the PostFinalBoss battle [[ThemeMusicPowerUp directly reuses]] the {{opening theme}}.
* ''VideoGame/{{Splatoon}}'': The beginning of one of the single player themes, [[ the one that plays on the first stage]], gets a reprise during [[ the final boss's theme.]]
* ''VideoGame/Splatoon2'' also uses this for the first two phases of its final battle. The first phase uses a tense DarkReprise of "Bomb Rush Blush" with the Octarian army's leitmotif mixed in, while the second phase has a more hopeful medley of "Tide Goes Out" and "Bomb Rush Blush".

[[folder: Turn Based Strategy ]]
* Fighting an enemy you can recruit in ''[[VideoGame/FireEmblemJugdral Fire Emblem: Genealogy of the Holy War]]'' has a unique battle theme, a variation of (appropriately enough) the recruitment theme.
** Additionally, [[VideoGame/FireEmblemElibe Idoun]], [[VideoGame/FireEmblemTheSacredStones Lyon]], and [[VideoGame/FireEmblemTellius the Black Knight]] all have a boss remix of their {{Leitmotif}}.
** As do [[spoiler:Oliver]], [[spoiler:Sephiran]], and [[spoiler:Dheginsea]] in ''[[VideoGame/FireEmblemTellius Radiant Dawn]]''. Caineghis has one as well, but luckily for you he's on your side the whole game.
** In an example that applies to a group rather than a specific character, ''[[VideoGame/FireEmblemElibe Blazing Sword]]'''s major boss theme "Softly with Grace" is a remix of the Black Fang's event theme.
** ''Fire Emblem: Awakening'' has a remix of [[spoiler:the Avatar's theme (i.e. ''your'' theme)]], which also has elements of the main series theme partway for good measure--in OminousLatinChanting, no less. Also, the [[spoiler:Future Past]] DLC includes yet another remix of [[spoiler:the Avatar's theme (i.e. ''your'' theme)]], which is fitting, as the bosses that use it are [[spoiler:characters related to the Avatar: the male and female Morgans (Avatar's child, depending on gender)... and '''[[GreaterScopeVillain Grima]]''']]!
* Variation: In ''VideoGame/HeroesOfMightAndMagic V'', siege battles are accompanied by a remix of the city´s theme.
* Many character themes in ''VideoGame/LuminousArc2'' are remixed into boss battle themes when fighting them. The aptly named "Rosetta Rosso" theme is remixed into "Rosefall;" Fatima's "Shadow Frost Witch" is remixed into "The Dark Wings, Hugging to Freeze;" [[spoiler: Master Mattias's]] "The Ruler" is remixed into "The Dictator's Force;" and lastly, [[spoiler: Bharva's]] theme "Black Flames" is remixed into "Raging Flames".
** Even the first ''VideoGame/LuminousArc'' has at least one boss remix. The final boss theme "Believe in Yourself" contains a partial remix of "Theme of Luminous Arc." "Existence" may have been remixed as well into the boss theme, but it's difficult to tell.
* In [[{{VideoGame/Civilization}} Civilization V]], each civilization's leader has a musical theme attributed to them that is derived from a real-life song. Each song has two variations, for peace and for wartime - this trope applies to the latter, where the peace theme is always arranged to sound darker, more oppressive, and generally befitting an angry and hateful leader of a country trying to erase your own civilization from existence.

[[folder:Visual Novel]]
* ''Franchise/AceAttorney''
** As the trial approaches its climax, the normally calm "Moderato" theme that plays during cross-examinations will be replaced with a faster and more frantic "Allegro" remix. ''VisualNovel/AceAttorneyInvestigations'' and its sequel add a more intense "Presto" remix that plays for the very last confrontation of each case.
** In ''Trials and Tribulations'', when presenting the very last piece of evidence, a remix of "Pursuit ~ Cornered" from the first game will play with an added drum track.
** Inverted in ''Dual Destinies'', where Apollo's Objection theme from ''Apollo Justice'' gets a calmer remix as his out-of-court {{Leitmotif}}.

!!Non-video game examples:
%%* ''Anime/TengenToppaGurrenLagann'' has one with a OneWomanWail.
%% Administrivia/ZeroContextExample. Add context to this entry before adding it back

* Interesting example in ''Anime/FinalFantasyVIIAdventChildren'': Tifa and Loz fight in Aeris's church to a piano version of the [[VideoGame/FinalFantasyVII FFVII]] battle theme.
* ''Disney/TheLittleMermaid'''s climactic battle music, "Eric To The Rescue", combines the {{leitmotif}}s of Ariel, Eric, and Ursula.

* ''Webcomic/{{Homestuck}}'': The standard "Harlequin" theme is remixed into "Harleboss" for John's battle against the Crude Ogres. And then [[spoiler:[[MonsterClown Gamzee]] steals the theme in a DarkReprise of his own.]]