Megami Tensei Wiki

Shin Megami Tensei: Synchronicity Prologue is a game developed by Den-fami Nico Game Magazine’s Ladybug team for PC. The game was a limited time free offer on Atlus Japan's official site from October 16th to December 24th, 2017. An unofficial English patch has been released by Brento_Bento.

Initially, the game was labelled a hoax (嘘です, uso desu)? in the Japanese trailer for Shin Megami Tensei: Strange Journey Redux on October 13, 2017 upon which it received strong positive feedback from viewers for the production of such a game. Three days later it was revealed to be a fully playable game ready for public access as part of the 25th anniversary of the Megami Tensei series and marketing campaign for Shin Megami Tensei: Strange Journey Redux.


Taking place shortly before the events of Shin Megami Tensei: Strange Journey, Jack Frost is synchronized with the mind of a human in order to traverse and fight demon hordes. He rescues the non-synchronized Jack o' Lantern after he was frozen by Black Frost, who decimated all the Jacks that previously attempted an assault. They meet a small creature who names himself J-kun.

The Jacks traverse the different Sectors of the Schwarzwelt to defeat Black Frost, fighting against Bifrons, Decarabia, Alice, and Girimehkala on the way. After defeating the latter, the Jacks meet again with J-kun, who tells them he's remembered he used to be human, until he booted up a synchronicity program sent to him, sending his mind into the body of a demon in the Schwarzwelt. They realize destroying Black Frost is the only way to send J-kun back.

After defeating Black Frost, J-kun appears, revealing Black Frost to be the missing part of his mind, and asks the Jacks to destroy Black Frost to release him, hopefully to return to his human body. The Frosts do so, releasing J-kun.

The credits show a list of world news, including the death/recovery of a famous programmer (depending on the ending), a mysterious blizzard in Antarctica, and the formation of the Schwarzwelt Joint Project.



The game is a 2D platformer with the classic rule of the player character taking damage when it comes in direct contact with the enemy. Initially the player can only control Jack Frost but very quickly it will rescue Jack o' Lantern to join. Jack Frost can walk and jump. Switching to Jack o' Lantern allows hovering slightly above the ground. Mid-way through the game, Jack Frost obtains the mini-Demonica armor which transforms it into Demonee-Ho, this gives it additional null-poison resistance and change its attack to gun-type. The player can also obtain optional spells at various points in the map which cost MP to cast. Innate attacks on the other hand do not consume MP.

  • Jack Frost's innate attacks:
    • Horizontal ice projectile with moderate range.
    • During air holding down button and pressing attack button allows downward ice projectile. Mashing the attack button allows Jack Frost to remain in air briefly during the attack execution.
    • Holding the attack button until "charge" bubble appears and then release the button will unleash a larger horizontal projectile which pierces through enemies on its line of fire, has much higher range, and freezes the enemies briefly but does minimal damage.
    • All ice projectiles can freeze water surface permanently until switching area or melted by Jack o' Lantern's fire attack.
  • Jack o' Lantern's innate attacks:
    • Three fire projectiles spread slightly like a sharp cone. It can change to 8 cardinal directions by holding the directional key and pressing attack button. For example, holding left and up buttons and pressing attack button shoots the fire projectile upper-leftward.
    • Holding the attack button until "charge" bubble appears and then release the button will unleash a stronger single projectile which pierces through obstacles and enemies on its line of fire.
      • During charging, its firing direction can be rotated freely with a trajectory line visible for indication.
    • All fire projectiles can melt the frozen water surface.

All player characters and enemies possess elemental resistance affinities: Gun, Fire, Ice, Electric, and Wind. Jack Frost nulls Ice and is weak to fire. Jack o' Lantern nulls fire and is weak to ice. Element skills including ones for Gun, Wind, and Elec can be obtained by exploring each area.

Enemies drop macca on the ground and grant experience for level up upon defeat. Macca must be collected manually and can be spent on Dwarf's shop or his vending machines for recovery items.

Through out the map, there are save points and portals. Save point also recovers HP and MP fully upon saving. Portal allows free teleport to another previously visited portal.


Promotional Images[]




External Links[]


Megami Tensei Megami Tensei (Telenet) - Megami Tensei (Atlus) - II - Kyūyaku
Shin Megami Tensei Shin Megami Tensei - II / Gaiden: Ma To Houkai - if... / Hazama's Chapter - J - NINE -
III: Nocturne / Maniax / Chronicle Edition / HD Remaster / Pachislot - 20XX / Devil's Colosseum - IMAGINE - Tokyo Requiem - Strange Journey (Redux) - Devil Hunter Zero - IV / Apocalypse - Devil Collection - Synchronicity Prologue - Liberation Dx2 - V / Vengeance
Last Bible Last Bible - II - Another Bible - III - Special -
New Testament / II: Hajimari no Fukuin / III: Mugen no Eiyuu
Majin Tensei Majin Tensei - II: Spiral Nemesis - Ronde - Blind Thinker / II
Devil Summoner Devil Summoner / Pinball: Judgment - Soul Hackers / Intruder / Soul Hackers New Generation - Soul Hackers 2
Raidou Kuzunoha vs. The Soulless Army - Raidou Kuzunoha vs. King Abaddon
Persona Megami Ibunroku Persona (PSP Remake) / Ikū no Tō Hen -
2: Innocent Sin / Eternal Punishment / Lost Memories / Infinity Mask -
3 (FES* / Portable* / Reload) / Dancing in Moonlight
4 (Golden*) / Arena / Ultimax / Dancing All Night
5 (Royal*) / Dancing in Starlight / Strikers / Tactica
Q: Shadow of the Labryinth - Q2: New Cinema Labyrinth
Devil Children Black Book / Red Book - White Book - DemiKids Light / Dark - Fire Book / Ice Book -
Messiah Riser - Puzzle de Call! - Appli de Call! - Devil Children Mobile
Digital Devil Saga Avatar Tuner - 2 - A's TEST Server
Devil Survivor Devil Survivor (Overclocked) - 2 (Record Breaker) / The Extra World
Jack Series Jack Bros. - Demonic Help Party
Other games Giten Megami Tensei: Tokyo Mokushiroku - Card Summoner - Tokyo Mirage Sessions ♯FE - Maken X - Catherine / Full Body - Metaphor: ReFantazio
Digital Devil Story (Novels) Digital Devil Story: Megami Tensei - 2: Warrior of the Demon City - 3: Demise of the Reincarnation
New Digital Devil Story New Digital Devil Story: Goddess of Enchainment - 2: Queen of the Ice Fields - 3: Planet of the Devil - 4: Wrath of the Young Emperor - 5: Eternal Goddess - 6: Bonds of Reincarnation
Other Novels Devil Summoner: Kuzunoha Raidou tai Shibito Ekishi - Giten Megami Tensei: Distant Flow ~EXILE~ - Megami Ibunroku Persona: Shadow Maze - Persona 3: Shadow Cry / Owari no Kakera / Alternative Heart / Velvet Blue - Persona x Detective Naoto - Quantum Devil Saga: Avatar Tuner - Devil Survivor 2 The Animation: Cetus's Prequel
Anime Digital Devil Story: Megami Tensei - Tokyo Revelation - Persona -trinity soul- - Persona 3 The Movie - Persona 4 The Animation / -The Factor of Hope- / The Golden Animation - Persona 5 The Animation The Day Breakers - Persona 5 The Animation - DeviChil - D-Children: Light & Dark - Devil Survivor 2 The Animation
Manga Shin Megami Tensei: Tokyo Revelation - if... / Kahn - IV: DEMONIC GENE / -Prayers- - Gaiten: Hato no Senki - EDEN - CG Senki: Dante no Mon - Majin Tensei - Devil Summoner: Raidou Kuzunoha vs. The Lone Marebito - Megami Ibunroku Persona - Persona: Tsumi to Batsu - Persona 3 / Portable Dengeki Comic Anthology / Portable Dear Girls Comic Anthology - Persona 4 / The Magician - Arena / Arena Ultimax / Dancing All Night - PQ: -Roundabout- / Side:P3 / Side:P4 - Tartarus Theater - Persona 5 / Dengeki Comic Anthology / Comic à La Carte / Comic Anthology (DNA Media Comics) / the Animation Dengeki Comic Anthology / Mementos Mission - Q2: Persona Q2: Roundabout Special - Devil Children / Light & Dark - Digital Devil Saga: Avatar Tuner: Shinen no Matou - Devil Survivor - 2: -Show Your Free Will- / The Animation Manga
Mobile Apps The Night Before - QIX - Chaining Soul - Aegis: The First Mission - Em - Illust Puzzle - Escape - Social - Ain Soph - Mobile Online - The Card Battle - Colors - Persona O.A. - Persona 5: The Phantom X - Mobile Phone Demon Collection - Atlus Casino - Devil Summoning Program - Digital Novel
Other The Amala Multiverse - Earth - Expanse - Great Will
Protagonists - Mascots - Navigators - Birthdays
Patches and Updates - In popular culture - Jungian psychology - Arcana