History Trivia / BioShock2

** ''Minerva's Den'' almost suffered from ExecutiveMeddling when 2K wanted the staff to include one last battle in [[spoiler:C.M. Porter's office]] before the ending, but the team pushed hard enough for the company to reject the idea.

*** That said, there is also a removed Adam vision from Eleanor where it is revealed that Delta is not her biological father. It is unknown if the developers simply couldn't decide whether to have Delta be Eleanor's biological father or not, or if it was going to be dependent on some choice made by the player, but was ultimately scrapped.

** Speaking of ''Minerva's Den'', originally, TheReveal was that [[spoiler:C.M. Porter was plain DeadAllAlong, rather than turned into the Big Daddy known as Subject Sigma, just like in SpiritualPredecessor VideoGame/SystemShock2, where your MissionControl turns also turns out to be an AI impersonating a dead person.]]
** The Protector trials was originally intended to be canon and mentioned in the main story. There also would have been somewhat more story linking the gathering sessions together. However, changes to main story made Sophia Lamb's ADAM Reserves less plot critical to the main story while the Protector Trials was put on the back burner.
*** The player would have also had to use the stolen ADAM to create the gene tonics seen in the little sister gifts and then the "Master Protector" tonic available in Minerva's Den as a reward for the protector trials. The Big Daddy in the protector trials would have delivered it to a pneumatic tube, and Sigma would have picked it up in one. In the final version, it's just available for free at a Gatherer's Garden.

** Originally there was only going to be a single Big Sister who would be the real BigBad of the game: one of Jack's rescued Little Sisters who couldn't adjust to life on the surface and would return to Rapture and recreate her childhood by kidnapping children to make into new Little Sisters. In another version, Sofia Lamb would still be the BigBad, but there would still be a single Big Sister as TheDragon, which would be revealed to be Eleanor (hence why in Audio Diaries, Sofia still refers to Big Sister in the singular). Thus you would fight the Big Sister in a series of {{Hopeless Boss Fight}}s where you had to survive and damage her enough for her to retreat. Eventually the developers scrapped this since they felt knowing that the Big Sister would always escape would undermine the excitement of the battles as well as feeling that "the Big Sister being YOUR Little Sister" was a weak twist. [[spoiler:In a way they partially kept the twist, with ONE of the Big Sisters being the protagonist's Little Sister-only she was Delta's Little Sister, not Jack's.]]

* WordOfGod: According to Jordan Thomas, [[https://forums.2k.com/showthread.php?78622-Introduction-time!-Steve-Gaynor-writer-Lead-Designer-of-Minerva-s-Den/page3&p=970066#post970066 the enormous light under Persephone is a luminescent biomass that mutated the sea slugs to produce ADAM.]]
* The Protector trials was originally intended to be canon and mentioned in the main story. There also would have been somewhat more story linking the gathering sessions together. However, changes to main story made Sophia Lamb's ADAM Reserves less plot critical to the main story while the Protector Trials was put on the back burner.

* WordOfGod: According to Jordan Thomas, [[https://forums.2k.com/showthread.php?78622-Introduction-time!-Steve-Gaynor-writer-Lead-Designer-of-Minerva-s-Den/page3&p=970066#post970066 the enormous light under Persephone is a luminescent biomass that mutated the sea slugs to produce ADAM.]]

* NamesTheSame: This game isn't [[Series/DoctorWho the only work]] to have character named [[Recap/DoctorWhoTVMTheTVMovie Grace Holloway]].

* QuoteSource:
** WoobieDestroyerOfWorlds

* BTeamSequel: 2K Marin took on the task of creating a direct sequel to ''VideoGame/{{BioShock|1}}'' to free up Irrational to work on ''VideoGame/BioShockInfinite'', which, as it involved an entirely new setting, took much longer.

** Dionysus Park was originally conceived as being as a perfectly intact area that wasn't leaking and falling apart like the rest of Rapture. The player was originally supposed to get there by way of an underwater section through a completely flooded [[NostalgiaLevel Fort Frolic]]. The area would have been home to wild parties hosted by the famous filmmaker Ava-Marie Tate. Stanley Poole, who was so delusional from splicing that he believed he was still the {{Moral Guardian|s}} IntrepidReporter he once was and was implied to be Grace Holloway's husband, tasked Delta with getting Tate's parties on film. Delta would have taken an ADAM-derived drug called Eden, which would cause hallucinations such as images from his past, large marionettes, and Sander Cohen as a 20-foot tall bunny. However, the footage would have shown that Stanley was spliced up himself and [[spoiler:had sold Eleanor to become a Little Sister]], causing him to GoMadFromTheRevelation and attempt to "erase" Delta.

* WhatCouldHaveBeen: A cut idea for the plot would have involved [[DirtyCommunists Soviet soldiers]] invading Rapture. Part of the AI coding intended for the Russians eventually ended up being used by the splicers instead.

** A removed message from Eleanor revealed that Delta is her biological father (Sophia picked his DNA randomly from a bunch of archived DNA).

** You could use Pneumo Tubes to buy and sell supplies with non-spliced survivors who had barricaded themselves from the splicers. Ultimately this idea was cut along with the survivors, whose model was re-used for the splicer with the shaved head in the game's opening.

** You could use Pneumo Tubes to buy and sell supplies with non-spliced survivors who had barricaded themselves from the splicers. Ultimately this idea was cut along with the survivors, whose model was re-used for the bald splicer in the game's opening.

* {{Defictionalization}}: [=NECA=] has replicas of the EVE Hypo and Big Daddy dolls, just in case your normal Little Sister wasn't creepy enough. They also have one for the "bunny" and "wielder" Splicer masks.

** You could use Pneumo Tubes to buy and sell supplies with non-spliced survivors who had barricaded themselves from the splicers. Ultimately this idea was cut along with the survivors, whose model was re-used as a splicer model in the game's opening.

** Subject Delta's armor used to be based off of old UsefulNotes/WorldWarII bombers and [[http://bioshock.wikia.com/wiki/File:SubjectDeltaConcepts3.jpg would have been a lot more top-heavy and bulkier]].

** [[https://bioshock.fandom.com/wiki/File:BioShock_2_Escaped_Test_Subject_Pitch_Concept.jpg A concept pitch for a re-imagined Vita-Chamber]] mentions an "alternative generation of Big Daddys & '''Big Mommas'''", suggesting female Big Daddies were considered, as they never appear in the franchise except for the three female multiplayer characters.

** "[[AlternateRealityGame Something In The Sea]]" wasn't going to have an effect on the main game, but fans loved it so much that protagonist Mark Meltzer was given a minor role.

** [[https://bioshock.fandom.com/wiki/File:BioShock_2_Escaped_Test_Subject_Pitch_Concept.jpg A concept pitch for a re-imagined Vita-Chamber]] mentions an "alternative generation of Big Daddys & '''Big Mommas'''".