Persona 4: Dancing All Night is a 2015 rhythm video game developed by P-Studio and published by Atlus for the PlayStation Vita. The game is a spin-off of Persona 4 (2008), which is part of the Persona anthology of Megami Tensei games. The game received generally positive reviews from critics. A port for the PlayStation 4 was included with the Endless Night Collection of Persona 3: Dancing in Moonlight and Persona 5: Dancing in Starlight.

Persona 4: Dancing All Night is a rhythm game in which the characters of Persona 4 dance to music from the Persona series, including original and rearranged songs. The game is split into two main modes; Story, where players experience the game's story which is split up by various music stages, and Free Dance, in which players can pick any song they have unlocked and perform at various difficulties, unlocking more songs by clearing each stage.

The game uses analog sticks and six face buttons: the up, left, and down directional buttons and the triangle, circle, and cross buttons. As each stage plays, notes appear from the center of the screen and move towards targets on the sides of the screen, requiring the player to hit the corresponding button in time with the music. Some notes require the player to hit two buttons at the same time, or hold the button down for the duration of the note. In addition to the notes, Scratch Rings appear which require the player to flick either analog stick to hit. Although missing Scratch Rings will not count as a miss, hitting enough pink Fever Rings will allow the player to enter Fever Mode during certain parts of each song, allowing them to earn more points. The player's success is represented by a Hype Gauge at the top of the screen, with the song failing if it drops too low, or is not at a high enough level by the end of the song. If the player's Hype Gauge is high enough upon entering Fever Mode, Bond Fever will activate and a partner character may join the main character in their dance.

Upon clearing a song, players receive in-game money which they can use to purchase new items, costumes, and accessories. Some items may only be unlocked after clearing certain requirements, such as clearing a certain number of songs or making a certain amount of purchases. Costumes and accessories can be used to customize each character's appearance during their songs in Free Dance mode. Items can be used to alter the gameplay to make it easier or more challenging, which in turn increases or decreases the score and money earned from each level. Additional songs, costumes, and accessories can be purchased as downloadable content.

The story is framed as a tale that Margaret is telling to an unseen visitor in the Velvet Room about her guest, Yu Narukami.

Roughly a month following the epilogue of Persona 4 Golden, Rise Kujikawa, who has since returned to the idol industry, asks Yu Narukami and all her other friends to dance alongside her in the upcoming music festival called Love Meets Bonds Festival. As Yu, along with Naoto Shirogane, join up with Rise at her dance studio and are introduced to fellow idol Kanami Mashita, they learn that Kanami's idol group, Kanamin Kitchen, has mysteriously gone missing. Looking into a rumor concerning a video that shows up on the LMB website at midnight, allegedly showing an image of a deceased idol, Yu, Rise, and Naoto decide to check out the video themselves and are sucked into the Midnight Stage, a world separate from the TV world they are used to. There, they discover a mysterious entity that uses strange ribbons and a song to force Shadows to form a bond with her, effectively brainwashing anyone who comes into contact with the ribbons. Unable to use violence in this world, the group discovers that they can use the power of song and dance to express their feelings to the Shadows, freeing them from the voice's control.

The next day, as the rest of the Investigation Team is assembled at the dance studio, the mysterious voice attempts to pull Kanami into the Midnight Stage but ends up grabbing producer Kyoka Ochimizu instead. Following them, the Investigation Team split up to rescue the captured members of Kanamin Kitchen as the voice attempts to force a fake bond with them. As each member is rescued and taken to a safe dressing room, the team discovers pages from a diary. Coming across Ochimizu as well, the group deduces that the world is somehow tied to Yuko Osada, an idol who committed suicide years ago. At the same time, the Shadows they encounter are people who got dragged into the world after watching the video. Back in the real world, Kanami comes across Ryotaro and Nanako Dojima, who become curious about the whereabouts of Yu and the others. As Ryotaro helps Kanami look into the strange circumstances surrounding the incident, Nanako is recognized for her dancing talent and is chosen to appear alongside Kanami at the LMB Festival. During this time, Kanami experiences painful flashbacks as she ponders over the lyrics of her upcoming song, "Calystegia", which was originally intended for Yuko. To her shock, Kanami eventually discovers that the diary she had been carrying all this time belonged to Yuko, who she had witnessed killing herself when she came to the studio to audition years ago. Devastated and traumatized over the repressed memories, Kanami is overcome by despair and pulled into the Midnight Stage.

Back in the Midnight Stage, Ochimizu, who was Yuko's producer back when she was alive, is swayed by the voice but brought to her senses by Yu and the others. Discovering the song sung by the Shadows to be a reversed recording of Calystegia, the team discovers the voice to be a Shadow version of Kanami, who has pulled the real Kanami and the entire LMB audience into the Midnight Stage. Although the team manages to save Kanami and bring her to her senses, the Shadow Kanami, revealed to be a god of desire named Mikuratana-no-Kami, bonds itself with the rest of the audience. Determined to get their feelings across, Rise combines her strength with Kanami and the Kanamin Kitchen girls to power up her Persona, Himiko, transforming it into a giant stage for Yu and the others to express themselves. Finally understanding their feelings, Mikuratana-no-Kami releases everyone and returns them to the real world, where Kanami prepares to finish off the festival with a performance of Calystegia.