* ActingForTwo: Devola and Popola share a voice actress, while Jakob and Gideon share a voice actor.
* BigNameFan: Sui Ishida, creator of Manga/TokyoGhoul [[https://twitter.com/sotonami/status/600333975349932033 is apparently a fan]]. [[http://coromoor.tumblr.com/post/162824341096/the-concept-artist-for-nier-automata-was-given-art He even gave concept art of Ken Kaneki to one of the Automata concept artists at the Tokyo Ghoul film premiere as a gift]].
* BilingualDialogue: Invoked at least in Japan. The Japan-exclusive ''Replicant'' version was done with Japanese voices only while ''Gestalt'', the version to be released to international audiences, was done only in English with Japanese text.
** Played straight with the ending song Ashes Of Dreams, which has an English, French, Gaelic and Japanese version depending on the ending.
* ContinuityNod: Several to ''VideoGame/{{Drakengard}}'', such as the "Red Dragon" that was transported to their world being [[spoiler:Angelus]].
* CreatorKiller: Cavia closed down following the game's commercial underperformance.
* DuelingGames: ''Nier'' was published by Square Enix at roughly the same time as their post-apocalypse epic fantasy, ''VideoGame/FinalFantasyXIII''.
* ExecutiveMeddling: There are conflicting stories about which one came first, but the gist of it is the fact that one of the Niers (most likely father Nier) was created to appeal more to one of the markets, the idea being that Brother Nier would be more in line with Japan's tastes and dad Nier more in line with the west's. This seems to have paid off; while some people prefer brother Nier for various reasons, father Nier is much more popular with western fans of the game due to a father-daughter story being perceived as more primal and powerful and the relative scarcity of playing as an older protagonist in JRPG's, making this a case of TropesAreNotBad.
* NoExportForYou: As mentioned above, while there are two versions of the game in Japan, ''Replicant'' never made it to the states; western releases had ''Gestalt'' on both the [=PS3=] and the Xbox 360.
* PlayingAgainstType: [[spoiler:Tyrann]] is a considerable departure from the roles Creator/SpikeSpencer is often associated with, given that he's a sleazy, smooth-talking and murderous thug.
* TrollingCreator: It's a Cavia game. What do you expect?
* WhatCouldHaveBeen: Originally, the game was going to have a fairy tale theme, [[http://something-very-special.tumblr.com/post/24669007400/concept-art-weiss featuring a young boy collecting 13 grimoires in a quest to save a mysterious girl.]] Leftovers of this concept still exist in the final game, not only with the grimoires but with the fact that many characters and bosses are named after famous stories and fairytales such as the shade [[Literature/PeterPan Hook]].
** At one point a UsefulNotes/PlaystationVita version of the game was in development that would have combined both the ''Replicant'' and ''Gestalt'' versions into a single game, but was cancelled because Square wanted to focus more development time and effort towards ''VideoGame/DragonQuestX''.
** In an odd twist of fate, Emi Evans only ended up doing the vocal work for the game because Keiichi Okabe was commissioned for ''VideoGame/DanceDanceRevolution'' and the song the two made together didn't make the cut.
* WordOfGay: The creators confirmed that Emil is in love with Nier during interviews. When asked if it might just be platonic, they outright insisted he's gay.
* WordOfGod: According to Yoko Taro, the game's story was inspired by the events of 9/11.
------