- Persona 5 / Royal
- Persona 5: Dancing in Starlight
- Persona Q2: New Cinema Labyrinth
Mementos is the Palace for everyone's hearts. It takes the form of a twisted version of the Tokyo subway connected by a massive series of subway tunnels with wooden train tracks in place of rails, with various features of a prison such as chains or bars. The Shadows in upper Mementos resemble those of black humanoids with numerous masks. When a Shadow Self inhabits an area, the walls develop red cracks that resemble spider web or fractal patterns, and the veins that power Yaldabaoth's regeneration become prominent. The Phantom Thieves of Hearts explore the dungeon by traveling with Morgana's bus form.
Unlike other Palaces, exploring Mementos is optional, although it can be used for grinding on levels, items, money and Personas. Either way, spending time to explore is strongly recommended in order to cut a significantly huge amount of time reaching its depths. Exploring it is also required to advance various Confidants, as heist requests related to their story will be issued, which must be cleared before they can be progressed further.
Mementos is divided into multiple "paths," each of which has its own unique architecture and floors, referred as "areas." They are randomly generated and areas open up as the fame of the Phantom Thieves grows with each Palace they defeat.
- Path of Qimranut: Consists of 2 areas.
- Path of Aiyatsbus: Consists of 7 areas. (rest on area 4)
- Path of Chemdah: Consists of 8 areas. (rest on area 5)
- Path of Kaitul: Consists of 10 areas. (rest on area 6)
- Path of Akzeriyyuth: Consists of 12 areas. (rest on areas 4 and 8)
- Path of Adyeshach: Consists of 13 areas. (rest on areas 5 and 9)
- Path of Sheriruth: Consists of 14 areas. (rest on areas 6 and 10)
- Path of Iweleth: Consists of 1 area and acts as an entrance to the Depths of Mementos, within which the Holy Grail has hidden itself.
- Path of Da'at: Consists of 15 areas and the Cognition Control Room (True end of Mementos). Royal only.
Its enemies are affected by weather in the real world:
- Thunderstorm: Increases appearance of rare enemies and items.
- Torrential rain: Same as thunderstorm, but to a greater effect.
- Pollen warning: Enemies may fall asleep in dungeons and request Eye Drops in negotiation.
- Heatwave: Enemies may suffer Burn at the beginning of battle.
- Flu Season: Enemies may suffer Despair at the beginning of battle.
- Cold Wave: Enemies may be frozen at the start of battle. Royal only, January onwards.
All bad weather conditions (save for Cold Wave) also boost the appearance rate of Treasure Demons, chests and rare search items.
Final Heist: Mementos
- Main article: Depths of Mementos
While the surface is initially an optional place meant for training, the depths serve as the final dungeon of Persona 5, when Yaldabaoth awakens his true form, the Holy Grail, within it, where Shadow Selves and the will of the masses are imprisoned in a high security prison.
Persona 5 Royal
The old BGM of Mementos will now only play in the upper floors. Several new BGM had been added for the lower levels of the dungeon.
During the third semester, Takuto Maruki will know how to use Mementos to change the public's cognition, and because of his berserk cognition warping powers, allowing him to create a world devoid of all suffering and progress. It is heavily implied that the Phantom Thieves themselves taught him what they want and the protagonist taught him about Mementos, so when this time comes, they all succumb to his spell. His palace directly ties to it via a towering line of tentacle-like cables, which he used to drive Cendrillon berserk. These cables also barricade the second half of the Palace and must be lifted from Mementos to allow progress. Futaba Sakura hacks into the system and removes the barricade, allowing process to the second half of Maruki's Palace.
A new area, the Path of Da'at, is opened after January 13 and must be transversed in order to allow exploration of the second half of Maruki's Palace, as it'll be blocked by a bundle of cables connected to it. At the end of the area is a hidden lab that Maruki uses to find the wishes of people he hasn't gotten to yet, and the control center for retracting some of the cables. Once the cables are removed, the Palace and Mementos then can be freely explored while infiltrating his Palace.
Persona Q2: New Cinema LabyrinthMementos appears briefly during the prologue sequence, where the Phantom Thieves are seen making a routine trip. While driving the Mona-Bus through the area, both Morgana and Makoto suddenly lose control of the Mona-Bus and it barrels straight into the depths of Mementos. The Mona-Bus eventually comes into contact with a glowing screen and drives into it, thus sending the Phantom Thieves out of Mementos and into the world of movies.
- Main article: Mementos Requests
Mementos is also the setting of missions, referred to as "requests." After finding out a target's name in the real world, the group must find and defeat the target's shadow in Mementos in a boss fight to make the target have a Change of Heart.
"Beware the Clingy Ex-boyfriend" acts as a tutorial mission while other missions are received through Yuuki Mishima's chat messages, certain Confidants or certain part-time jobs. Certain Confidants require specific requests to be cleared before ranking them up further. Due to plot reasons, the group can only access and complete missions up until December 23rd.
List of Enemies
In general, shadows that spawn in Mementos are the ones that were already encountered in previous Palace dungeons, with some shadows being exclusive to Mementos. Mementos will generate new floors based on story progress and act similar to Devil's Peak and the Mikage Ruins from Megami Ibunroku Persona. The Reaper can also spawn if the party stays in the same floor for about 2 minutes.
Exclusive to Mementos
- Hope Diamond
- Crystal Skull
- Mementos is a randomly generated dungeon like Tartarus and the Midnight Channel. However, the Depths has a fixed layout and its own set of puzzles like the Palaces before it.
- Mementos becomes mandatory in December, as it generates a new palace to be entered by the Phantom Thieves.
- The overall design of Mementos is reminiscent of La Mappa Dell'Inferno painted by Botticelli and based off of Dante Alighieri's written work The Divine Comedy.
- The escalator stars of the Path of Da'at lead upward rather than down.
- The paths of Mementos are named after the Adam Kadmon, the personification of infinite light from the real god and the perfect human; in the normal Kabblah, Da'at is the part of the Sefirot that connects to the Qliphoth, which ties into both Maruki's thematic connection to the Garden of Eden and Adam Kadmon. In the Japanese version, names of these paths are given their literal meaning: , specifically the versions given by William G. Gray in his book The Tree of Evil. This ties into the ultimate master of Mementos being Yaldabaoth, as the Qliphoth is taken to be the "shadow of God," just as Yaldabaoth is only a deluded impostor of Ain Soph, Kabbalah's name for God as he was before the creation of the world. It is the inverted version of the , the Tree of Life. The only exception is the Path of , which is named after the center of the Sefirot representing wisdom and perfection, which ties to
|Path of Qimranut||思想奪われし路||Thought-robbing path (Materialism)|
|Path of Aiyatsbus||調和奪われし路||Harmony-robbing path (Instability)|
|Path of Chemdah||節制奪われし路||Temperance-robbing path (Greed)|
|Path of Kaitul||美徳奪われし路||Virtue-robbing path (Vice)|
|Path of Akzeriyyuth||慈悲奪われし路||Compassion-robbing path (Cruelty)|
|Path of Adyeshach||感動奪われし路||Sense-robbing path (Insensitivity)|
|Path of Sheriruth||寛容奪われし路||Tolerance-robbing path (Rejection)|
|Path of Iweleth||見識奪われし路||Wisdom-robbing path (Ignorance)|
|Path of Da'at||認知得し者たちの路||Path of the Enlightened (Enlightenment)|
- Unused dialogue in the game indicates that there are more Mementos requests intended than in the final game. 
|fscr6000_001_000.bf||An entertainment host who leeches women of their money.|
(Issued by Ann Takamaki) (restored in Royal)
|fscr6000_002_000.bf||A housewife that steals others' items out of jealousy.|
|fscr6000_004_000.bf||A mother who refuses to pay for her child's school lunches.|
(Issued by Ryuji Sakamoto) (restored in Royal)
|fscr6000_005_000.bf||A housewife who constantly complains about things due to self-entitlement.|
|fscr6000_006_000.bf||A person who extorts his clients, presumably Madarame. There is no quest description.|
|fscr6000_009_000.bf||A banker who embezzles money from his customers.|
|fscr6000_010_000.bf||A customer who harasses the employee of a store for her phone number because he had a crush on her.|
|fscr6000_013_000.bf||The mother of a florist employee who is trying to gamble all of her money away due to grief for her husband. Might be related to florist part time job.|
|fscr6000_015_000.bf||An old man who criticizes younger people due to self-entitlement.|
|fscr6000_022_000.bf||The employee of a company who tried to foil it because his boss is doing illegal things.|
|fscr6000_023_000.bf||A student who blackmails another student.|
|fscr6000_024_000.bf||A Kaneshiro copycat.|
|fscr6000_025_000.bf||A police officer who ignores stalker reports.|
(Issued by Futaba Sakura to Yuuki Mishima)
|fscr6000_028_000.bf||A student who uses his mother's position as PTA president to harass her teacher.|
(Issued by Morgana to Yuuki Mishima)
|fscr6000_030_000.bf||A mother who forces her daughter to be a projection of herself.|
|fscr6000_031_000.bf||A boy who pirates video games.|
|fscr6000_032_000.bf||A rich and handsome playboy who charms women into giving him their money.|
(Issued by Haru Okumura to Yuuki Mishima)
|fscr6000_035_000.bf||An indie idol who uses the Phantom Thieves' name to gain popularity and fame.|
|fscr6000_039_000.bf||A teacher from Shujin Academy who exploits younger teachers.|
|fscr6000_039_000.bf||The employee of a company who deleted his company's critical data because of a grudge towards its overtimes.|
Appearances in Other Media
- Mementos appears as a stage in Super Smash Bros. Ultimate. It has three separate color palettes depending on the background music selected for the stage, drawing color schemes and motifs from Persona 3, Persona 4, and Persona 5.
|Playable||Ren Amamiya - Morgana - Ryuji Sakamoto - Ann Takamaki - Yusuke Kitagawa - Makoto Niijima - Futaba Sakura - Haru Okumura - Caroline and Justine|
|DLC||Shinjiro Aragaki - Goro Akechi - Theodore - Lavenza - Sho Minazuki - Labrys|
|Tokyo||Café Leblanc - Shibuya - Shujin Academy|
|Palace||Kamoshida's Palace - Madarame's Palace - Kaneshiro's Palace - Futaba's Palace - Okumura's Palace - Niijima's Palace - Shido's Palace - Mementos|
|Other||Velvet Room - Hawaii|
|Songs||GROOVY - One Nightbreak|
|Albums||Persona Dancing P3D & P5D Soundtrack Advanced CD|