History Main / PermanentlyMissableContent

* ''VideoGame/MiddleEarthShadowOfWar'': After completing the [[YourPrincessIsInAnotherCastle Faux-Endgame]] mission "The Bright Lord', as a direct result of [[spoiler:Celebrimbor and Eltariel leaving Talion to die]], you miss out on all the Bruz, Eltariel, [=Carnan/Zogg=] and Gondor side-quests if you did not complete them before. Though the game warns you beforehand.

* The ''VideoGame/PajamaSam'' series is known for including collection sidequests as an extra activity. The first game has a chance of placing one of the socks in Sam's room, the very first screen of the game. As soon as you leave this screen, there is no turning back, though since the sock is really easy to notice, it's unlikely. The third game pulls this off ''twice'' in the boxtop sidequest, and unlike the first game, both are very easy to miss since they're tiny and are as far from the middle of the screen as possible. Top it off with the fact that they always appear no matter what, are on the second and third screens, they're really easy to miss, and once again, if you move on, there is no turning back. This is especially annoying since the box tops are the hardest items to notice in the series, leaving you running around frantically looking for the last one.

* ''VideoGame/ProfessorLayton'':
** Almost every game has certain areas where you can never go back past a certain point, so if you happen to miss any of hint coins (and in ''Miracle Mask'', collectibles) that are in those areas, they're gone for good. However, if you happen to miss any puzzle this way, they will be sent to a puzzle keeper, who will keep those puzzles safe for you to solve whenever you speak to them.

* ''[[VideoGame/AncientDomainsOfMystery ADOM]]'' has too many to count. Two BonusDungeons, the Pyramid and the Minotaur Maze, are only open to characters of certain levels (13-16 for the Pyramid, 22-30 for the Minotaur Maze). If you haven't found and killed the BonusBoss inside when you reach that level, then they close up for good and render everything inside permanently irretrievable. And if you so much as ''talk'' to Khelavaster without giving him an Amulet of Life Saving, he'll die a PlotlineDeath, rendering the [[InfinityPlusOneSword Trident of the Red Rooster]] and the GoldenEnding unavailable all at once.

* In''VideoGame/Portal2'', there's an achievement called "Professor Portal" that you get by beating the co-op mode, and then going through the co-op mode's tutorial with a Steam friend who has never played the co-op mode before. Because of how it works, it's mathematically impossible for every player of the game to get the achievement, because once all but one player has it, they've all played the game before, so the one remaining player doesn't have anyone left to play with to get the achievement. And in practice, even fewer players will be able to get the achievement, since not everyone started playing co-op with a Steam friend.

Permanently Missable Content is a gameplay component (such as an item, weapon, {{sidequest}}, [[SecretCharacter character]], {{achievement|System}}, or plot event) that can become permanently inaccessible after a certain point. A close relative and often an example of GuideDangIt A common source of frustration for gamers, especially those shooting for HundredPercentCompletion. If a player's window for accessing the content has closed, their only options for getting it are to either reload an earlier save (if possible) or start the game anew.

Permanently Missable Content is a gameplay component (such as an item, weapon, SideQuest, [[SecretCharacter character]], {{achievement|System}}, or plot event) that can become permanently inaccessible after a certain point. A close relative and often an example of GuideDangIt A common source of frustration for gamers, especially those shooting for HundredPercentCompletion. If a player's window for accessing the content has closed, their only options for getting it are to either reload an earlier save (if possible) or start the game anew.

->''"When you're exploring a video game world, you don't like being told which areas you can and can't go to. So you're really not gonna enjoy it when you try to go to an area you've already been to, and then you're told, 'you can't come in anymore 'cause you're wearing trainers.' What if I left something important in there?! What do I do now?!"''

->''"When you're exploring a video game world, you don't like being told which areas you can and can't go to. So you're really not gonna enjoy it when you try to go to an area you've already been to, and then you're told, 'you can't come in anymore 'cause you're wearing trainers.' WHAT IF I LEFT SOMETHING IMPORTANT IN THERE?! WHAT DO I DO NOW?!"''

->''"When you're exploring a video game world, you don't like being told which areas you can and can't go to. So you're really not gonna enjoy it when you try to go to an area you've already been to, and then you're told 'you can't come in anymore 'cause you're wearing trainers.' WHAT IF I LEFT SOMETHING IMPORTANT IN THERE?! WHAT DO I DO NOW?!"''
-->-- ''LetsPlay/RabbidLuigi''

[[folder:Books]]
* ''Agrippa: A Book Of The Dead'' by cyberpunk author Creator/WilliamGibson. Each of the book’s pages are printed with a special ink that gradually turns invisible upon exposure to light -- which is an irreversible process. It also came with a floppy disk, with a program can only run once and then corrupts itself, refuses to run if the write-protect tab is covered, and is copy-protected so you can’t just make a backup -- and oh, it corrupts itself first thing, so if you quit it halfway through, yeah. Only two copies of the book delivered to the Library of Congress for archival purposes are printed with regular ink instead. It can be assumed that the version of the floppy delivered with the book to the Library of Congress will also not self-destruct, although given the age, bit-rot would’ve done the job anyway. Later gloriously subverted when a image of the floppy was made and distributed into the dark of the internet. There was also a live one-time public reading on TV, though that one was also gloriously subverted since hackers managed to social-engineer their way into the studio to make a recording of the reading, and the transcript began being distributed on underground [=BBSes=] soon after.
[[/folder]]

[[folder:Toys and Online Stores]]
* [[https://www.fangamer.com/ Fangamer]] may put certain items in the [[https://www.fangamer.com/collections/last-chance Last Chance]] collection for reasons unknown to many people.
* [[https://shop.klei.com/ Klei Shop]] differentiates between "special edition" and "limited edition" items. Both are sold in limited quantities, except that the latter will only get a single chance and is the rarest of the two. Zombie Wes Figure and [[https://shop.klei.com/product/pink-crabbit-plush-limited-edition/ Pink Crabbit plush toy]] are two examples of the latter; scroll down on the latter item's page to know more about the distinction.
* [[https://www.makeship.com/ Makeship]] does limited-edition runs of creator-designed plushies. They only get manufactured if enough pre-orders are made before the deadline, and only enough will be made to fufill said pre-orders; if you missed said deadline, your only hope is to hit up ebay and hope you get lucky. The tags on them will even say how many of that plushie got made.
* Toys/{{Nendoroid}}: Since [=GoodSmile=] releases nendoroids based on demand, occasion, and licensing, like with {{Toys/Figma}}, a nendoroid may never have a rerelease, especially if there isn't enough demand for a particular nendoroid.
* Franchise/SylvanianFamilies: It can be assumed that some sets that have been considered as “permanently retired” (ie there has been no reissues in a long time) are this when it comes to new collectors- they're no longer issued that collecting them would mean paying an unthinkable sum of money for them used. For example, apparently (according to old commercials) at one time there was a range of figures [[https://youtu.be/TZ5P0YV1M6I?t=2m12s with built-in music boxes]]. Given that the line was pretty much not exported out of Japan and (judging by how there were no subsequent commercials) was very quickly discontinued even within Japan, that these things probably don’t allow the owners to replace the batteries without destroying the toy, and that the batteries in these are most likely dead by now, one can only imagine most of them ending up in landfills and what remains are in the hands of longtime collectors in non working condition- there is just zero chance of new collectors getting their hands on the discontinued dolls.
[[/folder]]

* Makeship does limited-edition runs of creator-designed plushies. They only get manufactured if enough pre-orders are made before the deadline, and only enough will be made to fufill said pre-orders; if you missed said deadline, your only hope is to hit up ebay and hope you get lucky. The tags on them will even say how many of that plushie got made.

[[folder:Toys]]

** There is an optional Random Event that is unlocked by bringing four people in certain other Random Events to the Altruist Cult's fortress as Trevor. If you play the applicable Random Events as Michael or Franklin, or you haven't brought the required amount by the time you've played through them all as Trevor, then this mission becomes permanently inaccessible.[[note]]Thankfully, it doesn't count towards OneHundredPercentCompletion but you can lose out on a reasonable amount of money.[[/note]]

* ''VideoGame/MarioParty1'' has a rather unusual example in that one of its ''[[EvolvingTitleScreen title screens]]'' becomes permanently inaccessible. Normally, the title screen changes to reflect whichever character won the most recently played game board. However, there is a generic title screen that only ever appears the first time you load up the game. It returns after playing Eternal Star once, but beyond that, once it's gone, and the only way to see it again is to delete your save data.

** There are two bonus enemies hidden throughout the mansion: Gold Mice and Speedy Spirits. Speedy Spirits appear in the blink of an eye in certain dark rooms and vanish just as quickly; if Luigi doesn't catch them in one go, they'll vanish forever. Gold Mice are similar, but instead of just vanishing, they move really quickly, and can be vacuumed up in one hit. Both types will disappear if all other enemies in the room are beaten first, because beating the enemies turns on the lights in the room. Both of them drop the same thing: Lots and ''lots'' of money, and, in the case of the Speedy Spirits, gems. There is a blackout partway through the game, however, giving Luigi a second chance to catch any Speedy Spirits he missed previously, but there are no more chances after that, and to make matters worse, there are several Speedy Spirits that can only be gotten in random, out-of-the-way rooms ''during the blackout''. Oh, and you can't save during the blackout.
** It also has a plant in the Bone Yard that can be watered after every chapter. Miss it once, and the plant dies, meaning you lose the chance to get one of the giant diamonds worth a lot of money, and a huge amount of assorted coins and bank notes.

* ''VideoGame/{{Rakuen}}'': The patient lounge can be decorated with all sorts of dolls, furniture, and pets that can be found throughout the journey. Most of these collectibles can be obtained at any time, but a few of them are hidden in areas that are only accessible during certain parts of the story.

** In ''Metal Gear Solid: VR Missions'', if the player completes all the training missions, the game will show a concept artwork of Metal Gear RAY from the then-upcoming ''VideoGame/MetalGearSolid2''. However, there's no way to view picture again once the data has been saved.

* ''VideoGame/{{Portal 2}}'' There's an achievement called "Professor Portal" that you get by beating the co-op mode, and then going through the co-op mode's tutorial with a Steam friend who has never played the co-op mode before. Because of how it works, it's mathematically impossible for every player of the game to get the achievement, because once all but one player has it, they've all played the game before, so the one remaining player doesn't have anyone left to play with to get the achievement. And in practice, even fewer players will be able to get the achievement, since not everyone started playing co-op with a Steam friend.

* This very Wiki, as new rules are made, pages had to be cut for being non-conformant. This have lead to content being lost forever.
** When it was declared that UsefulNotes pages should not have Trivia pages, quite a bit of information was lost forever as those pages were cut.
** ''Troper Tales'', anecdotes from fellow tropers, became lost forever because a new rule forbidding them got passed.
** Similar to the UsefulNotes example above but on a more genuinely permanent scale, when the same rule was applied to JustForFun pages, a lot of content related to ''JustForFun/InspectorSpacetime'' was lost, including the character pages. Fortunately this time the content was migrated off wiki to be preserved.
** Beginning 2021, [=TVTropes=] started a purge of works and creators pages it deems unsatisfactory. Those pages are practically lost forever.

** When it was declared that UsefulNotes pages should not have Trivia pages, quite a bit of information was lost forever.

** Beginning 2021, [=TVTropes=] started a purge of works and creators pages it deems unsatisfactory. This means these shows and creators now no longer have a page on TVTropes.

** The [[UsefulNotes/CentralProcessingUnit long choreographed list]] of historically significant [=CPUs=], [=GPUs=] and sound cards was believed lost forever, since one troper thought it would be a good idea to move it to a Trivia page, which was followed a few months later by a new rule stating that UsefulNotes pages should not have Trivia pages. Luckily, some tropers managed to find backups of the data, and restored them when [=TVTropes=] introduced the timeline pages.

** The [[UsefulNotes/CentralProcessingUnit long choreographed list]] of historically significant [=CPUs=], [=GPUs=] and sound cards was believed lost forever, since one troper thought it would be a good idea to move it to a Trivia page, which was followed a few months later by a new rule stating that UsefulNotes pages should not have Trivia pages. Luckily, the data for the CPU page was still present in the edit history, so another troper was able to re-add it when [=TVTropes=] implemented the new ''Timeline'' pages of which the list is a perfect fit. Information for GPU and Sound Cards have not yet been fully restored owing to the info being missing from the History of the pages, however the information has been found on the Wayback Machine and is being restored into the new Timeline subpages for the respective pages.

** The [[UsefulNotes/CentralProcessingUnit long choreographed list]] of historically significant [=CPUs=], [=GPUs=] and sound cards was believed lost forever, since one troper thought it would be a good idea to move it to a Trivia page, which was followed a few months later by a new rule stating that UsefulNotes pages should not have Trivia pages. Luckily, the data for the CPU page was still present in the edit history, so another troper was able to re-add it when [=TVTropes=] implemented the new ''Timeline'' pages of which the list is a perfect fit. Sadly however the same cannot be said for data in the GPU and Sound Cards page.