The scene where Haymitch (Woody Harrelson) reads Plutarch's letter to Katniss (Jennifer Lawrence) was originally scripted to be Plutarch (Philip Seymour Hoffman) talking to Katniss in person. Unfortunately, Hoffman died before the scene was filmed.

A crowd-pleasing moment at the end of the movie that surprised even the filmmakers is when Haymitch says goodbye to Effie Trinket by giving her a kiss on the lips. Woody Harrelson and Elizabeth Banks decided to do that unscripted.

Philip Seymour Hoffman's final film, released the year after his death from drug overdose.

Many of the Capitol scenes were shot in Paris and Berlin.

When Katniss (Jennifer Lawrence) says goodbye to Pollux (Elden Henson) at Tigris' (Eugenie Bondurant's) shop, he signs, "No. Don't use words. Don't forget. Thank you".

The cast has said multiple times that the hardest scene to shoot was the sewer scene. It took three weeks to shoot and was physically challenging, and it was very hot on the set since they shot on-location in actual sewers.

Director Francis Lawrence stated that because some of the visual effects sequences in this film were so challenging, he and the editors began working on them before The Hunger Games: Mockingjay - Part 1 (2014) was released.

The huge underground place Squad 451 enters through the middle of the movie is a real place in Japan. It is Metropolitan Area Outer Underground Discharge Channel, the world's largest underground flood water diversion facility, located between Showa in Tokyo and Kasukabe in Saitama prefecture.

Katniss Everdeen's red outfit on the movie poster never appears in the movie.

The first time Pollux (Elden Henson) signs to Castor (Wes Chatham) in this movie is when they reach the underground, and he says "home sweet home".

In the epilogue, Josh Hutcherson (Peeta Mellark) wears a blond wig for the first time. Hutcherson had dyed his hair blond for all of the Hunger Games movies and hated it a lot. Since the epilogue was shot several months after principal shooting ended, and the shooting only took a few days, Hutcherson decided not to dye his hair again and wore a wig instead.

Considered by director Francis Lawrence as the most violent Hunger Games film out of the four.

In The Hunger Games (2012), Buttercup the cat is black and white. In the remaining three films, he is orange (as written in the books).

The circular apartment complex with the toxic oil trap is an actual location. The Espaces Abraxas is in a suburb of Paris, France. The CGI team digitally removed the many trees that are really in the courtyard, but otherwise made very few alterations to the site.

Philip Seymour Hoffman's final film role. He had virtually completed filming with only two scenes left remaining to be done. These were re-written for another character.

On February 6, 2015, Lionsgate CEO Jon Feltheimer revealed that there could be a potential fifth film in the Hunger Games franchise - a sequel or a prequel.

The consoles in the District 13 control center set were originally built for the Mission Control Center set in Apollo 13 (1995) and were later acquired by a prop rental house and rented out for this movie. Several of those same consoles, still with badges reading "Panem" and "Property of Capitol District Defense Forces", were used in the Mercury Control Center set of Hidden Figures (2016).

This had the lowest opening of the franchise at the box office, earning $102.7 million.

The new Mockingjay logo for this movie can be found at the end of The Hunger Games: Mockingjay - Part 1 (2014) after the end credits.

The water in the sewer scenes was mixed with caramel coloring, Dawn dish soap, and alfalfa to give it a frothy, substantial, "sewer water" feel.

The epilogue scene was shot a year after principal shooting ended. Jennifer Lawrence's baby nephew was such a heavy sleeper, he wouldn't wake up to the loud clapping that was supposed to startle him. They resorted to a squeaky whistle to get him to wake up.

American Sign Language translation of Pollux and Castor: Pollux jokes to Castor "Home sweet home". Pollux says to Katniss 'No. Don't use words. Don't forget. Thank you.'

There were plans to release the film globally in 3-D, but they were ultimately scrapped for the U.S. release.

The first fiddle tune played during the wedding is "Angelina Baker", a song written by Stephen Foster and a popular American fiddle tune.

Meta Golding reprised her role as Enobaria, Victor of the 62nd Hunger Games. Her character appeared in The Hunger Games: Catching Fire (2013) as one of the victors in The 75th Hunger Games and Third Quarter Quell. In the plot, although her character did not appear in The Hunger Games: Mockingjay - Part 1 (2014), she was recovered by the Capitol after the Quarter Quell, but was not present in the Capitol when District 13 went to rescue Peeta. In the book, it is stated that because she was from a pro-Capitol district, it was unlikely that she was ever held prisoner, unlike Johanna, Peeta, and Annie.

When doing interviews, Jennifer Lawrence could say very little about the films as they filmed The Hunger Games: Mockingjay - Part 1 (2014) and this movie back-to-back.

President Snow's rose garden is shown inside a greenhouse, while in the first The Hunger Games (2012) movie, it is shown outside, away from the Capitol buildings.

At the start of the movie, Peeta (Josh Hutcherson) tells Primrose (Willow Shields) that Katniss (Jennifer Lawrence) is a "mutt". Mutts, or "muttations" in full, refers to animal hybrids created by the Capitol with genetic engineering. They were more prominent in the books than in the movies.

In this movie, as well as the previous one, Katniss only wears her hair in her signature braid when she appears as "The Mockingjay" for propaganda purposes. All other times she wears it down or in a low ponytail.

According to director Francis Lawrence, the film's first-cut running time was two hours and fifty-one minutes, but the final cut's running time is set to be two hours and sixteen minutes, making it the third longest installment in the franchise.

This movie had the most visual effects out of all four movies. Thanks to Weta Digital, who had worked on movies like The Hunger Games: Catching Fire (2013), The Lord of the Rings and The Hobbit trilogies, Avatar (2009), Dawn of the Planet of the Apes (2014), et cetera.

The film cast includes four Oscar winners: Philip Seymour Hoffman, Mahershala Ali, Jennifer Lawrence, and Julianne Moore; and two Oscar nominees: Stanley Tucci and Woody Harrelson.

Gwendoline Christie and Natalie Dormer appeared on Game of Thrones (2011).

The lowest-grossing film of the franchise.

The only film in the franchise not to receive a Golden Globe nomination for Best Original Song.

Liam Hemsworth said that this film "might be the best in the series" and "never lets down" in its action.

The only film in the franchise not to have a corresponding various artists' compilation album. It is also the only film in the franchise to have only one song ("Deep in the Meadow" by Jennifer Lawrence) played in its credits, followed by the film score.

The first movie poster of the franchise in which Katniss does not look straight to the camera.

This is the second movie sequel in 2015 to feature an actor, in this case Philip Seymour Hoffman, who died while the movie was still in production. The first was Furious 7 (2015) with Paul Walker.

David Hallyday, a French singer, appears around 01:40:51 (greenhouse's guard on the left).

Julianne Moore and Philip Seymour Hoffman appeared in the Hannibal Lecter film franchise. Moore played Clarice Starling in Hannibal (2001), and Hoffman played Freddie Lounds in Red Dragon (2002).

The carbine used by Boggs (Mahershala Ali) and the rest of the team escorting Katniss is the H&K G36C. This is a 5.56mm carbine used by the German Army and various Police units around the world. The receiver on the weapons in the film has selections for safe, single shot, three round burst, and full auto.

This film did a promotional world tour with premieres in seven cities: Berlin, London, Paris, Madrid, Beijing, Los Angeles, and New York City.

The only film in the franchise to be widely released in 3-D.

Jena Malone, who plays the prickly, Hunger Games survivor Johanna Mason in three of the "Hunger Games" movies, is a victim of President Snow (Donald Sutherland). In the 2005 version of "Pride and Prejudice", Jena portrays the flirty, air-headed Lydia Bennet (1 of 5 sisters). Donald Sutherland plays Mr. Bennet, Lydia's father.

Composer James Newton Howard celebrated his birthday the day the teaser trailer was released.

Julianne Moore, Phillip Seymour Hoffman, and April Grace appeared in Magnolia (1999).

The main trailer for the movie was released on July 24, 2015.

Jennifer Lawrence and director Francis Lawrence are not related.

The final trailer to this movie was released on October 6, 2015.

The books' word count in the titles are in descending order: "The Hunger Games" has 3 words. "Catching Fire" has 2 words. "Mockingjay" has 1 word.

Julianne Moore and Woody Harrelson appeared in The Prize Winner of Defiance, Ohio (2005) and Game Change (2012).

Liam Hemsworth and Woody Harrelson appeared in The Duel (2016).

Sarita Choudhury (Egeria) and Jeffrey Wright (Beetee) appeared in Lady in the Water (2006).

Jennifer Lawrence reportedly made kissing Liam Hemsworth an awful experience. She gargled garlic and tuna fish before shooting the scenes for the sole purpose of making him uncomfortable.

Jennifer Lawrence accidentally revealed that her nephews were playing Katniss and Peeta's children during Comic-Con 2015.

The final scene of The Hunger Games: Mockingjay - Part 1 (2014), where Katniss wakes up and learns Peeta has been hijacked (after he tries to kill her) was originally intended to be the opening scene of this film, but during production, the filmmakers decided ending Part 1 after Peeta is knocked out by Boggs and the screen cuts to black was too big a cliffhanger for general audiences, so it was added after that instead.

Despite the violent tone of the movie, there are only approximately ten minutes of on-screen combat scenes.

When the victors are seated around the circular table, the bowl from The Hunger Games (2012) can be seen on the hutch behind Katniss (Jennifer Lawrence). This was the bowl of nightlock berries for Seneca Crane's (Wes Bentley's) suicide.