History Main / OneTimeDungeon

*** Subverted with several dungeons, which are still accessible, but certain rooms cannot be entered again. These rooms are the jail cell where Mario and his team found Bombette in Koopa Bros. Fortress[[note]]Mario and friends use Bombette's exploding abilities to escape the cell, and after defeating the Koopa Bros., the hole gets patched up[[/note]], Lava Piranha's lair in Mt. Lavalava[[note]]due to the eruption after completing the dungeon, the bottom floor leading to the lair becomes unsuitable for Mario and his team to walk on[[/note]] and the [[SecretPath secret passageway]] in [[GildedCage Princess Peach's bedroom]][[note]]Peach, whose castle is [[AllYourBaseAreBelongToUs sitting on top of]] [[TheVeryDefinitelyFinalDungeon Bowser's Castle]] after it was hoisted by the latter castle into the stratosphere, cannot enter the passageway again after Chapter 6, since Mario and his team rescued the penultimate Star Spirit, and Mario and his team also cannot access it upon reaching the castle for the final fight against Bowser[[/note]].

*** Subverted with certain locations that can be revisited, but certain rooms can't be reentered. They include the abandoned major and minor league locker rooms at the Glitz Pit[[note]]Mario and friends are locked in the minor league locker room prior to a match with Rawk Hawk, who was responsible for [[CheatersNeverProsper locking them in there so they'd forfeit]], and have to make their way through the other major league locker room to return to the locker room they were in before the match[[/note]], the interior of Cortez's ship, the Black Skull[[note]]the BossBattle with Cortez takes place in the ship's cabin, and after getting the Sapphire Star, Lord Crump attacks the island and you have to return to the cabin of the Skull to enlist Cortez's help in a counterattack; afterwards, the cabin becomes inaccessible, but you can use the ship to traverse back and forth between Rogueport and Keelhaul Key[[/note]], the baggage car and rooftops of the Excess Express[[note]]Mario and his team visit the baggage car twice: the first time to get Ghost T.'s diary and the second time to [[TraintopBattle fight the horde of Smorgs on the roof of the train]]; after Smorg is defeated, the rooftops and baggage car can't be entered again[[/note]], and Gloomtail's chamber in the Palace of Shadow[[note]]the corridor leading to this chamber eventually becomes a SecretUndergroundPassage leading to the Shadow Queen's throne room and crypt, and this chamber also has a SecretRoom containing [[PermanentlyMissableContent a Jammin' Jelly and an Ultra Shroom]]; after Mario and his team obtain the Star Key from Gloomtail, then use it to open the secret path, the corridor leading to Gloomtail gives way, preventing those rooms from being accessed again[[/note]]. Double subverted with the X-Naut Fortress, which explodes due to a power failure after the boss of that dungeon has been defeated, but is reaccessible in the end after defeating the final boss.

*** Subverted with several dungeons, which are still accessible, but certain rooms cannot be entered again. These rooms are the jail cell where Mario and his team found Bombette in Koopa Bros. Fortress[[note]]Mario and friends use Bombette's exploding abilities to escape the cell, and after defeating the Koopa Bros., the hole gets patched up[[/note]], Lava Piranha's lair in Mt. Lavalava[[note]]due to the eruption after completing the dungeon, the bottom floor leading to the lair becomes unsuitable for Mario and his team to walk on[[/note]] and the [[SecretPath secret passageway]] in [[GildedCage Princess Peach's bedroom]][[note]]Peach, whose castle is [[AllOfYourBaseAreBelongToUs sitting on top of]] [[TheVeryDefinitelyFinalDungeon Bowser's Castle]] after it was hoisted by the latter castle into the stratosphere, cannot enter the passageway again after Chapter 6, since Mario and his team rescued the penultimate Star Spirit, and Mario and his team also cannot access it upon reaching the castle for the final fight against Bowser[[/note]].

*** Subverted with certain locations that can be revisited, but certain rooms can't be reentered. They include the abandoned major and minor league locker rooms at the Glitz Pit[[note]]Mario and friends are locked in the minor league locker room prior to a match with Rawk Hawk, who was responsible for [[CheatersNeverProsper locking them in there so they'd forfeit]], and have to make their way through the other major league locker room to return to the locker room they were in before the match[[/note]], the interior of Cortez's ship, the Black Skull[[note]]the BossBattle with Cortez takes place in the ship's cabin, and after getting the Sapphire Star, Lord Crump attacks the island and you have to return to the cabin of the Skull to enlist Cortez's help in a counterattack; afterwards, the cabin becomes inaccessible, but you can use the ship to traverse back and forth between Rogueport and Keelhaul Key[[/note]], the baggage car and rooftops of the Excess Express[[note]]Mario and his team visit the baggage car twice: the first time to get Ghost T.'s diary and the second to fight the horde of Smorgs on the roof of the train[[/note]], and Gloomtail's chamber in the Palace of Shadow[[note]]the corridor leading to this chamber eventually becomes a SecretUndergroundPassage leading to the Shadow Queen's throne room and crypt, and this chamber also has a SecretRoom containing [[PermanentlyMissableContent a Jammin' Jelly and an Ultra Shroom]]; after Mario and his team obtain the Star Key from Gloomtail, then use it to open the secret path, the corridor leading to Gloomtail gives way, preventing those rooms from being accessed again[[/note]]. Double subverted with the X-Naut Fortress, which explodes due to a power failure after the boss of that dungeon has been defeated, but is reaccessible in the end after defeating the final boss.

*** Subverted with certain locations that can be revisited, but certain rooms can't be reentered. They include the abandoned major and minor league locker rooms at the Glitz Pit[[note]]Mario and friends are locked in the minor league locker room prior to a match with Rawk Hawk, who was responsible for [[CheatersNeverProsper locking them in there so they'd forfeit]], and have to make their way through the other major league locker room to return to the locker room they were in before the match[[/note]], the interior of Cortez's ship, the Black Skull[[note]]the BossBattle with Cortez takes place in the ship's cabin, and after getting the Sapphire Star, Lord Crump attacks the island and you have to return to the cabin of the Skull to enlist Cortez's help in a counterattack[[/note]], the baggage car and rooftops of the Excess Express[[note]]Mario and his team visit the baggage car twice: the first time to get Ghost T.'s diary and the second to fight the horde of Smorgs on the roof of the train[[/note]], and Gloomtail's chamber in the Palace of Shadow[[note]]the corridor leading to this chamber eventually becomes a SecretUndergroundPassage leading to the Shadow Queen's throne room and crypt, and this chamber also has a SecretRoom containing [[PermanentlyMissableContent a Jammin' Jelly and an Ultra Shroom]]; after Mario and his team obtain the Star Key from Gloomtail, then use it to open the secret path, the corridor leading to Gloomtail gives way, preventing those rooms from being accessed again[[/note]]. Double subverted with the X-Naut Fortress, which explodes due to a power failure after the boss of that dungeon has been defeated, but is reaccessible in the end after defeating the final boss.

*** Subverted with certain locations that can be revisited, but certain rooms can't be reentered. They include the abandoned major and minor league locker rooms at the Glitz Pit[[note]]Mario and friends are locked in the minor league locker room prior to a match with Rawk Hawk, who was responsible for [[CheatersNeverProsper locking them in there so they'd forfeit]], and have to make their way through the other major league locker room to return to the locker room they were in before the match[[/note]], the interior of Cortez's ship, the Black Skull[[note]]the BossBattle with Cortez takes place in the ship's cabin, and after getting the Sapphire Star, Lord Crump attacks the island and you have to return to the cabin of the Skull to enlist Cortez's help in a counterattack[[/note]], the baggage car and rooftops of the Excess Express[[note]]Mario and his team visit the baggage car twice: the first time to get Ghost T.'s diary and the second to fight the horde of Smorgs on the roof of the train[[/note]], and Gloomtail's chamber in the Palace of Shadow[[note]]the corridor leading to this chamber eventually becomes a SecretUndergroundPassage leading to the Shadow Queen's throne room and crypt; after Mario and his team obtain the Star Key from Gloomtail, then use it to open the secret path, the corridor leading to Gloomtail gives way, preventing those rooms from being accessed again; add to that, they would also [[PermanentlyMissableContent miss a chance at grabbing a Jammin' Jelly and an Ultra Shroom]][[/note]]. Double subverted with the X-Naut Fortress, which explodes due to a power failure after the boss of that dungeon has been defeated, but is reaccessible in the end after defeating the final boss.

*** Subverted with certain locations that can be revisited, but certain rooms can't be reentered. They include the abandoned major and minor league locker rooms at the Glitz Pit[[note]]Mario and friends are locked in the minor league locker room prior to a match with Rawk Hawk, who was responsible for [[CheatersNeverProsper locking them in there so they'd forfeit]], and have to make their way through the other major league locker room to return to the locker room they were in before the match[[/note]], the interior of Cortez's ship, the Black Skull[[note]]the BossBattle with Cortez takes place in the ship's cabin, and after getting the Sapphire Star, Lord Crump attacks the island and you have to return to the cabin of the Skull to enlist Cortez's help in a counterattack[[/note]], the baggage car and rooftops of the Excess Express[[note]]Mario and his team visit the baggage car twice: the first time to get Ghost T.'s diary and the second to fight the horde of Smorgs on the roof of the train[[/note]], and Gloomtail's chamber in the Palace of Shadow[[note]]the corridor leading to this chamber eventually becomes a SecretUndergroundPassageway leading to the Shadow Queen's throne room and crypt; after Mario and his team obtain the Star Key from Gloomtail, then use it to open the secret path, the corridor leading to Gloomtail gives way, preventing those rooms from being accessed again; add to that, they would also [[PermanentlyMissableContent miss grabbing a Jammin' Jelly and an Ultra Shroom]][[/note]]. Double subverted with the X-Naut Fortress, which explodes due to a power failure after the boss of that dungeon has been defeated, but is reaccessible in the end after defeating the final boss.

*** Subverted with certain locations that can be revisited, but certain rooms can't be reentered. They include the abandoned major and minor league locker rooms at the Glitz Pit, the interior of Cortez's ship, the Black Skull, the baggage car and rooftops of the Excess Express, and Gloomtail's chamber in the Palace of Shadow. Double subverted with the X-Naut Fortress, which explodes due to a power failure after the boss of that dungeon has been defeated, but is reaccessible in the end after defeating the final boss.

*** Subverted with certain locations that can be revisited, but certain rooms can't be reentered. Please include the abandoned major and minor league locker rooms at the Glitz Pit, the interior of Cortez's ship, the Black Skull, the baggage car and rooftops of the Excess Express, and Gloomtail's chamber in the Palace of Shadow. Double subverted with the X-Naut Fortress, which explodes due to a power failure after the boss of that dungeon has been defeated, but is reaccessible in the end after defeating the final boss.

*** Downplayed with the Forsaken Fortress, which sits completely abandoned after Link [[ItsPersonal rescues Aryll]] and [[BestBossEver defeats the]] [[FeatheredFiend Helmaroc King]], save for a few Keese and Rats. Link can still revisit the fortress, especially through the portal activated in [[TheVeryDefinitelyFinalDungeon Ganon's Tower]], but the Helmaroc King's and Ganon's chambers (consisting of the prison where Aryll was locked up along with Maggie and Mila and the top of the tower) cannot be accessed again due to the old pirate ship serving as Ganon's lair being burned up by Valoo. Moreover, if Link forgets to collect the Heart Container dropped by the Helmaroc King, he can still retrieve it in the exact same place where [[NoGearLevel his sword was dropped]] [[StealthBasedMission during the first visit]].

*** Downplayed with several dungeons, which are still accessible, but certain rooms cannot be entered again. These rooms are the jail cell where Mario and his team found Bombette in Koopa Bros. Fortress[[note]]Mario and friends use Bombette's exploding abilities to escape the cell, and after defeating the Koopa Bros., the hole gets patched up[[/note]], Lava Piranha's lair in Mt. Lavalava[[note]]due to the eruption after completing the dungeon, the bottom floor leading to the lair becomes unsuitable for Mario and his team to walk on[[/note]] and the [[SecretPath secret passageway]] in [[GildedCage Princess Peach's bedroom]][[note]]Peach cannot enter the passageway again after Chapter 6, since Mario and his team rescued the penultimate Star Spirit, and Mario and his team also cannot access it upon reaching the castle for the final fight against Bowser[[/note]].
** ''VideoGame/PaperMarioTheThousandYearDoor'' has segments after every Chapter where you get to play as Peach and Bowser. While these mostly boil down to uncovering information and minigames, the Bowser segments that come after Chapters 2, 4 and 6 contain unique side-scrolling levels based on ''VideoGame/SuperMarioBros1''. As these "Bowser" levels containing nothing of any real significance, once you complete one, there is no way of replaying it.

*** Downplayed with several dungeons, which are still accessible, but certain rooms cannot be entered again. These rooms are the jail cell where Mario and his team found Bombette in Koopa Bros. Fortress[[note]]Mario and friends use Bombette's exploding abilities to escape the cell, and after defeating the Koopa Bros., the hole gets patched up[[/note]], Lava Piranha's lair in Mt. Lavalava[[note]]due to the eruption after completing the dungeon, the bottom floor leading to the lair becomes unsuitable for Mario and his team to walk on[[/note]] and the [[Secret Path secret passageway]] in [[GildedCage Princess Peach's bedroom]][[note]]Peach cannot enter the passageway again after Chapter 6, since Mario and his team rescued the penultimate Star Spirit, and Mario and his team also cannot access it upon reaching the castle for the final fight against Bowser[[/note]].

*** Downplayed with several dungeons, which are still accessible, but certain rooms cannot be entered again. These rooms are the jail cell where Mario and his team found Bombette in Koopa Bros. Fortress[[note]]Mario and friends use Bombette's exploding abilities to escape the cell, and after defeating the Koopa Bros., the hole gets patched up[[/note]], Lava Piranha's lair in Mt. Lavalava[[note]]due to the eruption after completing the dungeon, the bottom floor leading to the lair becomes unsuitable for Mario and his team to walk on[[/note]] and [[GildedCage the secret passageway in Princess Peach's castle]][[note]]Peach cannot enter the passageway again after Chapter 6, and Mario and his team also cannot access it upon reaching the castle[[/note]].

** ''VideoGame/PaperMario64:

*** Downplayed with several dungeons, which are still accessible, but certain rooms cannot be entered again. These rooms are the jail cell where Mario and his team found Bombette in Koopa Bros. Fortress (Mario and friends use Bombette's exploding abilities to escape the cell, and after defeating the Koopa Bros., the hole gets patched up), Lava Piranha's lair in Mt. Lavalava (due to the eruption after completing the dungeon, the bottom floor leading to the lair becomes unsuitable for Mario and his team to walk on) and [[GildedCage the secret passageway in Princess Peach's castle]] (Peach cannot enter the passageway again after Chapter 6, and Mario and his team also cannot access it upon reaching the castle).

*** Downplayed with the Forsaken Fortress, which sits completely abandoned after Link [[ItsPersonal rescues Aryll]] and [[BestBossEver defeats the]] [[FeatheredFiend Helmaroc King]], save for a few Keese and Rats. Link can still revisit the fortress, especially through the portal activated in [[TheVeryDefinitelyFinalDungeon Ganon's Tower]], but the Helmaroc King's and Ganon's chambers (consisting of the prison where Aryll was locked up along with Maggie and Mila and the top of the tower) cannot be accessed again due to the old pirate ship serving as Ganon's lair being burned up by Valoo. Moreover, if Link forgets to collect the Heart Container dropped by the Helmaroc King after defeating it, he can still retrieve it in the exact same place where [[NoGearLevel his sword was dropped]] [[StealthBasedMission during the first visit]].

*** Downplayed with the Forsaken Fortress. Link can still revisit the fortress after [[ItsPersonal freeing Aryll]] and [[BestBossEver defeating the]] [[FeatheredFiend Helmaroc King]], especially through the portal activated in [[TheVeryDefinitelyFinalDungeon Ganon's Tower]], but the prison where Aryll was locked up along with Maggie and Mila cannot be accessed again due to the old pirate ship that served as Ganon's lair being burned up by Valoo. Moreover, if Link forgets to collect the Heart Container dropped by the Helmaroc King after defeating it, he can still retrieve it in the exact same place where [[NoGearLevel his sword was dropped]] [[StealthBasedMission during the first visit]].

*** Downplayed with the Forsaken Fortress. Link can still revisit the fortress after freeing Aryll and [[BestBossEver]] defeating]] [[ItsPersonal the]] Helmaroc King, especially through the portal activated in [[TheVeryDefinitelyFinalDungeon Ganon's Tower]], but the prison where Aryll was locked up along with Maggie and Mila cannot be accessed again due to the old pirate ship that served as Ganon's lair being burned up by Valoo. Moreover, if Link forgets to collect the Heart Container dropped by the Helmaroc King after defeating it, he can still retrieve it in the exact same place where [[NoGearLevel his sword was dropped]] [[StealthBasedMission during the first visit]].

*** Link can still revisit the Forsaken Fortress after freeing Aryll and [[BestBossEver]] defeating]] [[ItsPersonal the]] Helmaroc King, especially through the portal activated in Ganon's Tower, but the prison where Aryll was locked up cannot be accessed again due to the old pirate ship that served as Ganon's lair being burned by Valoo. Moreover, if Link forgets to collect the Heart Container dropped by the Helmaroc King after defeating it, he can still retrieve it in the exact same place where [[NoGearLevel his sword was dropped]] [[StealthBasedMission during the first visit]].

** In ''VideoGame/TheLegendOfZeldaOcarinaOfTime'', it is impossible to reenter the courtyard of Hyrule Castle after recovering all three Spiritual Stones and Zelda flees from the castle, as guards will be blocking the passageway indefinitely from that point on. Additionally, [[WombLevel Jabu-Jabu's belly]], unlike so many of the areas/levels from childhood, goes inexplicably missing in adulthood after the freezing over of Zora's Domain.

* ''VideoGame/{{Deltarune}}'': In each chapter, once the Dark Fountain is sealed entirely, all areas connected to it will disappear forever. Any recruited monsters will reside at Castle Town.

** ''VideoGame/{{Deltarune}}'': In each chapter, once the Dark Fountain is sealed entirely, all areas connected to it will disappear forever. Any recruited monsters will reside at Castle Town.

** In ''VideoGame/TheLegendOfZeldaOcarinaOfTime'', it is impossible to reenter the courtyard of Hyrule Castle after recovering all three Spiritual Stones and Zelda flees from the castle, as guards will be blocking the passageway indefinitely from that point on.

** Zigzagged with the de'Arnise keep and the forest near Umar Hills: both scenarios change into different areas after you solve the related quests. Just like Candlekeep above, you can even use cheats to teleport your party into the older area after you progressed through the story and find it just like you left.

** Candlekeep itself is zigzagged. Virtually it is not a "one time" dungeon since you can roam it twice, in the prologue and in the aforementioned chapter 6. However, in both cases the scenario corresponds to a different area file, with different characters, mini-quests, and things to do. Anything that was left during hte prologue doesn't carry over into chapter 6 (you can't give anymore Hull his sword or Lydia her book, for example). So, technically you reach each once. You can even use cheats to teleport in both areas and find the same people saying different things.
*** Some huts in Candlekeep are accessible only during the prologue, namely the the storage cellars, and partially the barracks too (you can't enter inside in chapter 6 but you will be temporarily teleported there during a brief cutscene). The giant library instead is only accessible during chapter 6.

** During chapter 4, the whole island composed by the town of Brynnlaw, the Spellhold asylum, and the maze underneath it. While all are accessible before you leave the island, once you proceed forwards they won't be available anymore.

*** Some huts in Candlekeep are accessible only during the prologue, namely the the storage cellars, and partially the barracks too (you can't enter inside normally but you will be temporarily teleported there during a brief cutscene). The giant library instead is only accessible during chapter 6.

** In the ''[[VideoGame/BaldursGateIIThroneOfBhaal Throne of Bhaal'' expansion, the initial sacred grove and the city of Saradush can't be reached once you leave them. Justified in the second case because of the developments in the story.

*** Some huts in Candlekeep are accessible only during the prologue, namely the the storage cellars, and partially the barracks too (you can't enter inside normally but you will be temporarily teleported there during a brief cutscene).