[[quoteright:320:[[VideoGame/DonkeyKong94 http://static.tvtropes.org/pmwiki/pub/images/therealbossonlylevel_5285.jpg]]]]
[[caption-width-right:320:This is basically the entire level.]]
->''"I'm ashamed of you, [[VideoGame/MegaManClassic Rock.]] [[LampshadeHanging Teleporting straight to the boss rooms?]] I thought I had taught you better."''
-->-- '''[[BigBad Dr. Light]]''', ''VideoGame/MegaMansChristmasCarol'' (which is actually a BossGame)

[[ExactlyWhatItSaysOnTheTin A level that consists entirely of a]] BossBattle. Usually, this is done for plot reasons, even in games [[ExcusePlot which don't have much.]] Said boss is almost ''always'' the [[ClimaxBoss mid-game]], penultimate, or [[FinalBoss final]] boss.

This trope has become increasingly more common in later platformer games with (slightly) deeper plots.

When taken to extremes this leads to a BossGame, where ''every'' level is a Boss-Only Level. Compare BossRush, which is a level devoted to ''several'' previously-fought bosses. See also BattleshipRaid.

The {{inver|tedTrope}}se of this is MooksButNoBosses.
----
!!Examples:

[[foldercontrol]]

[[folder:Action Game]]
* Almost all of the bosses in the first AmericanMcGeesAlice are like this. Only the Red King and [[DualBoss Tweedle Dee and Tweedle Dum]] avert this.
* Mission 6 in ''{{Contra}}: Shattered Soldier'' is entirely a SequentialBoss fight, and Mission 7 is the TrueFinalBoss.
* In the game adaptation of ''VideoGame/OnePiece'' for the GBA, each world is separated into three levels, the third of which being a boss fight with the corresponding ArcVillain.
* ''VideoGame/TheMatrixPathOfNeo'', the very last levels of actual play are exclusively boss-only battles.
[[/folder]]

[[folder:Action Adventure]]
* ''VideoGame/EccoTheDolphin'':
** The final level of the original is devoted to the battle with the [[BigBad Vortex Queen]].
** ''Ecco: The Tides of Time'' also has a Vortex Queen level, though it's not the final one.
* In the Playstation ''VideoGame/SpiderMan'' game, the chapter "Rhino's Rampage" consisted solely of a boss fight with Rhino.
* Most (if not all) of ''VideoGame/{{Bomberman}}'s'' boss fights were in Boss-Only Levels.
* TheVeryDefinitelyFinalDungeon in the expansion pack of ''VideoGame/TheBindingOfIsaac'' has a bossfight in every single room, and all except one are against two different bosses. [[NintendoHard How's that for hard?]]
* The last two levels of ''VideoGame/FamilyGuyBackToTheMultiverse'' are this.
[[/folder]]

[[folder:Beat 'Em Up]]
* ''VideoGame/{{Bayonetta}}'' does this with the Four Cardinal [[VirtueViceCodification Virtues]] (similar to the SevenHeavenlyVirtues...but as angelic monsters), although one of them has a few enemies before the boss fight.
* This often features on final stages in ''VideoGame/DevilMayCry''.
** in ''VideoGame/DevilMayCry'' [[spoiler: the proper fight with the final boss - Mundus The Prince of Darkness, occurs in the peniultimate stage which is just the fight. The last stage is mostly running away from the island where the game took place, but just before you get away you have one last match against Mundus which is much more short and easy.]]
** In ''VideoGame/DevilMayCry 2'' [[spoiler: it's a battle against first Argosax the Chaos and then the Despair Embodied for Dante's scenario, and a battle against Possessed Arius/Arius-Argosax for Lucia's scenario.]]
** In ''VideoGame/DevilMayCry 3'' [[spoiler:you fight your brother Vergil for the third and final time, on a shallow river in the bowels of hell.]]
** in ''VideoGame/DevilMayCry 4'' [[spoiler: Nero fights Sanctus Diabolica, the BigBad fully ascended. After that, he then fights the False Savior which is somewhat easier.]]
** in ''Videogame/DMCDevilMayCry'' [[spoiler: you have Vergil as the final boss once again]].
* ''VideoGame/MetalGearRisingRevengeance'' does this with the fight against [[spoiler: "Jetstream" Sam Rodrigues]] which counts as an entire chapter.
* Stage 8 of ''VideoGame/TheSimpsons'' is a boss fight against Smithers and Burns.
* Quite a few of these appear in ''VideoGame/AsurasWrath''. Specifically, the fights against Wyzen, Kalrow and his Fleet, Augus, Olga's fleet, [[spoiler: Wrath Asura]], The final Deus Battle, [[spoiler: the final Gohma Vlitra Battle, The FinalBossPreview battle against Chakravartin, The Final Yasha battle, and finally, the Last Chakravartin battle]].
* ''MadWorld'' has one of these in each of the first four areas, each acting as the final boss/stage of the area: Von Twirlenkiller in Downtown (though there's a brief motorcycle segment leading up to it), Yokozuna in Asiantown, Elise in the Castle, and Martin in Area 66.
* The final boss of ''VideoGame/AbobosBigAdventure'', [[spoiler:[[VideoGame/PunchOut Little Mac]]]], gets his own level in the style of [[spoiler:[[VideoGame/PunchOut his home game.]]]]
* "Technodrome: The Final Shell Shock!" from ''VideoGame/TeenageMutantNinjaTurtlesTurtlesInTime'' is the FinalBoss, Shredder[=/=][[SuperMode Super Shredder.]]
* The FinalBoss of ''VideoGame/DoubleDragonII'' on the NES gets his own stage as well.
* The sixth and final level of ''Black Belt''/''[[Manga/FistOfTheNorthStar Hokuto no Ken]]'' for the SegaMasterSystem is just a battle against Wang/Raoh.
* The first ''VideoGame/{{Battletoads}}'' game has the Dark Queen fight taking up the entire last level.
* ''VideoGame/XMenMutantApocalypse'' featured two Boss-Only Levels: Danger room fights against Omega Red and Juggernaut.
** ''VideoGame/MarvelSuperHeroesWarOfTheGems'' Features the Avenger's Base, where you can fight a holographic copy of any of the bosses of the regular stages.
[[/folder]]

[[folder:Fighting Game]]
* ''VideoGame/SuperSmashBros Brawl'' does this in the Adventure Mode, with "The Ruined Hall" and "Battleship Halberd Bridge". "The Canyon" can be considered [[PlayingWithATrope a variation]], since the level only contains a MultiMookMelee.
[[/folder]]

[[folder:First Person Shooter]]
* The only opponent in Episode 1 Level 9 of ''VideoGame/Wolfenstein3D'' was the boss, Hans Grosse.
* There are some in the ''VideoGame/MetroidPrime'' series. These are a first for the ''Metroid'' series, as the bosses often reside at the end (or central part) of large zones.
** The Sky Temple in ''VideoGame/MetroidPrime 2: Echoes''.
** The Leviathan Seed regions in ''Metroid Prime 3: Corruption''.
* ''VideoGame/{{Doom}}''
** The Tower of Babel (a fight against the Cyberdemon) and Dis (Spider Mastermind) from ''VideoGame/{{Doom}}''.
** ''Doom II''
*** Icon of Sin (the final level) is this.
*** The second secret level, being a CallBack to the above ''Wolfenstein 3D'' level, is also technically this on lower difficulties (Hurt Me Plenty and above add SS Nazis to the level; there's also the four hanging VideoGame/CommanderKeen's you have to kill to exit the level, but they're totally harmless).
* The Lair of Chthon from the original ''VideoGame/QuakeI''. No points for guessing what boss you fight in there.
* The Stadium, the last level of episode three in ''VideoGame/{{Duke Nukem 3D}}''; a duel against the Cycloid Emperor on a football stadium.
--> ''"It's down to you and me, you one-eyed freak!"''
* The final level in ''VideoGame/BatmanDoom'', featuring a duel against Bane in [[spoiler:the ruins of your Batcave]].
* In ''VideoGame/MegaMan8BitDeathmatch'', all of the single player bosses are fought in "seperate" areas in a specially made map. This map, titled ''Unknown'', is unplayable in normal multiplayer and any attempt to play on it will automatically redirect all players to Cut Man's stage.
[[/folder]]

[[folder:Hack And Slash]]
* Exaggerated in ''VideoGame/{{Gauntlet}} Dark Legacy'': each of the realm bosses gets a level to themselves.
* The Rank 10 and 7 stages in ''VideoGame/NoMoreHeroes2DesperateStruggle''.
[[/folder]]

[[folder:Platform Game]]
* The ''Franchise/SonicTheHedgehog'' series ''loves'' this trope. The trend started with [[VideoGame/SonicTheHedgehog1 the first game]] (which has the Final Zone), and ''really'' took off after [[VideoGame/Sonic3AndKnuckles The Doomsday Zone]], with the final bosses of most games take up their own level, usually played [[EleventhHourSuperPower while in]] SuperMode. In addition, the second game's Death Egg Zone was just two boss fights. Exaggerated in pretty much every ''Sonic'' game since ''[[VideoGame/SonicAdventure Adventure]]'', which all give bosses their own levels.
** ''VideoGame/Sonic3DBlast'' gave each boss their own level as well.
** The Wii and PS2 versions of ''VideoGame/SonicUnleashed'' demote Mazuri to one of these, possibly to save space.
** While ''VideoGame/SonicLostWorld'' mostly averts this trope, the Wii U version of Lava Mountain has this in Zones 1 and 4, while the entire level is this in the 3DS version.
* ''Super Mario Galaxy'' series:
** The first ''VideoGame/SuperMarioGalaxy'' has Bonefin Galaxy.
** Boss Blitz Galaxy in ''VideoGame/SuperMarioGalaxy2''. Also a case of BossRush.
* ''Franchise/{{Kirby}}'' always does this, with the exception of [[VideoGame/KirbysDreamLand the first game]].
* In general, ''VideoGame/MegaManClassic'' games use this for the very last stages.
** ''VideoGame/MegaMan2'''s final level is short and only leads up to the final battle with the alien [[spoiler:hologram]].
** In ''VideoGame/MegaMan3'', Break Man, and the Wily Machine get stages to their own [[spoiler:as does Gamma]]. Break Man's stage is literally ''one room'' - that being the one you fight him in, of course.
** The ascended fan-game ''VideoGame/StreetFighterXMegaMan'' has two stages like this. [[spoiler:Balrog and M. Bison.]]
* ''VideoGame/MegaManX'':
** In ''VideoGame/MegaManX4'', the [[DuelBoss duel]] against [[HonorBeforeReason Colonel]] is one of these if you're playing as X. (If you're playing as Zero, you get a cutscene instead.)
** In ''VideoGame/MegaManX5'', the battles with Dynamo are this.
* ''VideoGame/EarthwormJim'' has "Snot a Problem".
* In the original ''Franchise/CrashBandicoot'' trilogy, bosses have their own separate levels.
* The original ''VideoGame/SpyroTheDragon'' trilogy gives bosses their own levels.
* In the ''VideoGame/WarioLand'' series, the final boss of ''[[VideoGame/WarioLand3 3]]'' has his own level. Every boss in ''[[VideoGame/WarioLand4 4]]'' and ''Shake It!'' has their own level as well.
** In ''WarioWorld'', while there are bosses at the end of actual levels, world bosses are contained in their own level.
* ''Franchise/DonkeyKong'':
** The original ''VideoGame/DonkeyKong94'' did this, which likely set the trend for the series. Every four stages, you face DK in what is usually a dodging the debris kind of level, then the 8th stage is a fight against DK where you have to fight against him with barrels. The last six levels of the game are also this, where DK and DK Jr. try to harm you every stage and take you down, and it finally ends with a fight against DK, and then a final 9th level activates where you face Giga Kong.
** PlayedWith in the first ''VideoGame/MarioVsDonkeyKong'': while clearing the Mini-Mario Levels always leads players to facing Donkey Kong, after the first battle in any given world the Boss Battle itself is freely accessible afterwards, although not going through the MM levels first "punishes" the player with four HitPoints instead of the "usual" six, as it would be the case if all six Mini Marios are rescued. The sequels play it straighter.
** Every single boss in every ''VideoGame/DonkeyKongCountry'' game is in a level all its own, with the sole exception of the final boss of ''VideoGame/DonkeyKongCountryReturns''. In fact, the final boss of the original game isn't even placed in one of the game worlds; his "level" is just a spot on the overall island map.
* ''Franchise/{{Castlevania}}''
** In ''VideoGame/{{Castlevania|I}}'' for the NES, stage 12 is a short corridor leading to a BossBattle, and stage 18 is the famous stairs leading up to an antechamber to the FinalBoss room. The {{MSX}}2 version turns these into considerably longer levels.
** In ''VideoGame/SuperCastlevaniaIV'', the final areas consist of a series of chambers housing nothing more than bosses. Slogra, Gaibon, Death, and finally Dracula must be fought in sequence with no mooks interfering.
* The eighth level of ''VideoGame/KidNikiRadicalNinja'' is really the second part of the FinalBoss battle, where he starts running away.
* Exaggerated in ''VideoGame/MischiefMakers'', ''every'' boss has their own stage. ''Mini-bosses'' have their own stages!
* Level 20 of the SNES version of ''VideoGame/PrinceOfPersia1'' is just the FinalBoss.
* The Poseidome, the Industrial Park and the Chum Bucket Lab from ''VideoGame/SpongeBobSquarePantsBattleForBikiniBottom'' are this.
* ''{{VideoGame/Klonoa}} 2: Lunatea's Veil'' has one of these for each of its bosses. ''Door to Phantomile'' has one for the FinalBoss.
* Stage 8 of ''VideoGame/AlisiaDragoon'' is not so much a stage as a showdown with [[TheDragon Ornah]] and [[BigBad Baldour]].
* Every boss level in ''VideoGame/TinyToonAdventuresBustersHiddenTreasure'', with the exception of the first battle against Montana Max in the [[BigBoosHaunt haunted]] [[GangplankGalleon pirate ship level]] is this. These are the only types of levels in the game that cannot be revisited once completed.
* Every boss in ''VideoGame/TheAdventuresOfLomax''. It's downplayed in that there's a short platforming section before the actual boss fight.
[[/folder]]

[[folder:Role Playing Game]]
* In ''FreedomForce'', the last battle against Time Master is just him and his time clones.
* ''VideoGame/DarkCloud'' does this with most of its boss fights. The sequel, ''VideoGame/DarkChronicle'', does the same.
* ''VideoGame/FinalFantasyIX''
** This game features the [[IDontLikeTheSoundOfThatPlace Hill of Despair]], where you fight the final boss, [[GiantSpaceFleaFromNowhere Necron.]]
** Earth Shrine. A turning point in the plot, since [[spoiler:it unlocks the passage to Terra]], but the boss is a blend of GimmickLevel (you fight it with Zidane and ''Quina'', of all characters) and AnticlimaxBoss (unless you've neglected to learn Blue Magic).
* ''VideoGame/FinalFantasyVII'' has the City of the Ancients (not to be confused with the Temple of the Ancients which precedes it in the plot). There are no random battles, just some items and gear to pick up, a massive plot development followed by a Boss fight, and then Disc 1 is finished.
* A few examples from ''VideoGame/WorldOfWarcraft''
** The Eye of Eternity instance only has the fight with Malygos.
** Trial of the Crusader has five boss encounters and no trash.
** Throne of the Four Winds only has the fights with the Conclave of Wind and Al'Akir.
** Most of the holiday bosses have become this, despite taking place in dungeons (which are typically trivially easy for the maximum-level players fighting the boss), as queuing for a holiday boss results in you and your group being sent to where the fight happens, or given a direct route to the fight.
* ''DarkSouls''
** The Sanctuary Garden in the Artorias of the Abyss DLC, which consists only of the Sanctuary Guardian's boss arena. When you come back later, there are two DegradedBoss Sanctuary Guardians.
** The Demon Ruins comes close to being a boss-only level, as it has three bosses and most of the respawning enemies are also degraded bosses.
** Quelaag's Domain consists of a colossal spider nest linking Blighttown to the aforementioned Demon Ruins. Aside from two Infested Hollows [[spoiler: and Quelaag's [[IllGirl little sister]] (plus attendant)]], there is only the titular [[SpiderPeople Chaos Spider]] and a Bell of Awakening.
* A huge chunk of disc 2 of ''{{Xenogears}}'' is narration, boss fight, narration, boss fight, repeat. Occasionally, you'll crawl through a dungeon before said fight. Occasionally.
* In ''NiNoKuni'', the Ghost Ship is just two fights against a mini boss and a boss. Its counterparts, the Glimmering Grotto and the Vault of Tears, are complete dungeons with puzzles to solve and regular enemies to fight.
* Each Elder Dragon in the ''VideoGame/MonsterHunter'' series is fought in one of these. Those places are always unavailable otherwise. In the case of the Underwater Ruins in ''Tri Ultimate'', the lair of Ceadeus, it's also the battlefield to fight [[spoiler:Gold Ceadeus]] and [[spoiler:Abyssal Lagiacrus]].
[[/folder]]

[[folder:Shoot 'Em Up]]
* Famously, the third level of ''VideoGame/{{R-Type}}'' is essentially one long battle against a giant alien spacecraft.
* ''VideoGame/{{Gundemonium|Series}} Recollection'' and ''Gundeadli Gne'' do this in their final levels.
* Zone M/Titanic Lance in ''VideoGame/{{Darius}} Gaiden''. Special in that Zone M is right in the middle of the game, and Titanic Lance is generally agreed to be harder than most of the final bosses.
* The first ''VideoGame/BangaiO'' game has the duel with [[GoldfishPoopGang Sabu]] in level 26. There are no enemies at all, with the only obstacles being falling block generators.
* Segment 3 Lead and Segment 7 from ''VideoGame/{{Hellsinker}}'' pits you against Sunken Bishop and Rex Cavalier respectivly for almost the entire duration of the stage.
* The final stage of ''SteelSaviour'' has you play what seems to be a level with many "minibosses"... which are revealed to be the FinalBoss's CognizantLimbs. Finally, you fight the main eye at the end.
* A secret stage in ''VideoGame/AbmneshiTheProphecy'' consists of one long fight against the BonusBoss, Sirisai.
* The final stage of the arcade version of ''Manga/Area88'' is this, fighting the Project 4 fortress in an orange sky.
* The final stage of ''VideoGame/{{Kamui}}'' consists solely of the boss battle with Xaffiquel.
* ''Kamui''[='=]s prequel ''VideoGame/{{RefleX}}''
** Area 4 pits you against Cancer.
** Area 8, the final area, starts with a short cutscene followed by taking on ZODIAC Libra [[spoiler:and two KAMUI units]].
* The last stage of ''RayCrisis'' consists solely of the FinalBoss, and if the conditions are met, the TrueFinalBoss.
[[/folder]]

[[folder:Simulation Game]]
* The final mission of ''VideoGame/AceCombatZeroTheBelkanWar'' is just one extended SequentialBoss battle that still takes longer to beat than a typical campaign mission.
[[/folder]]

[[folder:Third Person Shooter]]
* The final level of ''VideoGame/KidIcarusUprising'' is a long, multi-stage boss fight.
* Most of the boss missions in the first three ''VideoGame/SyphonFilter'' games.
[[/folder]]