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Kingdom Hearts χ, stylized as Kingdom Hearts χ [chi],[1] is a Kingdom Hearts game that was exclusive to PC browsers. The game was free to play, but included additional purchasable items.[2] Set during the events of the Keyblade War, it hosted simple 2D graphics and allowed all players to become Keyblade wielders.

The closed beta test for Kingdom Hearts χ [chi] was held from March 22 to March 25, 2013. An open beta test started on the 8th of July and concluded with the official launch of the game service on the 18th of July. The game was terminated on September 1st, 2016.

Following the games termination, it was re-released for Android and iOS as Kingdom Hearts Unchained χ, which was later renamed Kingdom Hearts Union χ.

The game's cutscenes were remastered in HD and released as part of Kingdom Hearts HD 2.8 Final Chapter Prologue as Kingdom Hearts χ Back Cover.


Far away there is a World of fairy tales.
It is a World filled with light.
The light gave birth to many lesser worlds, and then embraced them.
The source of light is Kingdom Hearts, and the key that protects it is the χ-blade.
So long as it endured, it was believed that the World's light would shine eternal.

However, bright light casts shadows that beget darkness.
Darkness brings anxiety and fear, awakening desire.
Formerly hidden in the depths of the heart, darkness turns to chaos and begins to spread across the World.
To halt the advancing darkness, those who desire light forge Keyblades in the image of the χ-blade and set out on an adventure across the World.

Message from the KINGDOM[3]

Kingdom Hearts χ opens in pop-up book format, showing Kairi and her grandmother in Radiant Garden. Kairi's grandmother is telling Kairi her favorite story of light and darkness.

In Dive to the Heart, Player is given a choice to choose which of the five Unions to join: Anguis, Leopardos, Unicornis, Ursus, and Vulpes. Once Player has chosen, darkness surrounds them and Player summons forth a Keyblade. After being enveloped in light, Player appears in Daybreak Town and is immediately attacked by a Darkside Heartless. Player is easily overcome by the large Heartless, but is saved by their Foreteller, who forces the Darkside back into the Corridor of Darkness and follows it in order to destroy it.

Player is then introduced to Chirithy, who explains that Player had been chosen to become a Keyblade wielder to fend off the darkness that is quickly covering the worlds and collect Lux, and it has been tasked by Player's Foreteller to act as an aide to the novice Keyblade wielder throughout their training. Chirithy indicates that Player’s Keyblade is incomplete and still requires the power of "Cards". When Player goes to pick up a nearby Card, a Moogle takes it instead. The Moogle tells Player that they have many Cards that they can offer, but for a price before it gives Player the Card as a sample of what they have to offer.

After exploring the area and defeating several Heartless, Player is approached by their Foreteller, who explains that they will need to call upon the help of others to defeat stronger Heartless. When another Darkside appears, numerous Keyblade wielders from Player's Union arrive to help Player take down the powerful Heartless. Following their victory, the Foreteller warns Player that there are others who appear to be collecting light in order to fend off the darkness, but other Unions do not necessarily strive for peace across the worlds and are gathering Lux for their own selfish desires. The Foreteller instructs Player to discern whose darkness is hiding behind a façade of light for themselves. Once the Foreteller leaves, Chirithy sends Player to other worlds to fight the darkness via the Lanes Between.

Player visits Dwarf Woodlands, Wonderland, and Agrabah, where they defeat hordes of Heartless, but they are unable to locate where the Heartless are originating from. Upon returning to Daybreak Town, Chirithy decides to tell Player the story of the Master of Masters and how he bestowed a copy of the Book of Prophecies to each of the five Foretellers, which contains a prophecy of the Keyblade War. In order to save the future from being engulfed in darkness, the five Foretellers began using the hidden power within the prophecies via the Cards. Chirithy reminds Player that even though the five Foretellers have the same goal, their wills differ, which is why Player must not lose sight of who they are. Later, Chirithy discovers that the Darkballs that they found in Agrabah had come from another world and sends Player to Olympus Coliseum to defeat the Heartless.

Afterwards, Player returns to Daybreak Town to help several other Keyblade wielders fight off Heartless and meets another Keyblade wielder named Ephemer, who is from a different Union. Ephemer wishes to explore the Foretellers' Chamber, and despite Chirithy's protests, Player agrees to accompany him, though Ephemer eventually goes ahead without them. When Player arrives at the Foretellers' Chamber, Ava challenges Player to a fight to test their strength. After the duel, Ava notices Player that they have sadness in their heart, which is linked to darkness, and tells the Player to return home. During a mission at Beast's Castle, Player meets another Keyblade wielder named Skuld, who is from the same Union as Ephemer and invites Player to explore the Foretellers' lair. They are suddenly shocked to see two Foretellers fighting each other and encounter strange Heartless as they continue their mission. After the two defeat them, they also encounter a Nightmare Chirithy, who informs them that the Heartless they defeated are Keyblade wielders consumed by darkness.

To further understand the mysteries of the Foretellers and the future, Player, Chirithy, and Skuld re-enter the Foretellers' Chamber, where they are caught by a Foreteller. They are told that Ephemer is a traitor to his Union and that he has disappeared. Player then challenges the Foreteller to a duel, assuming Ephemer has been captured, but is easily defeated. Afterwards, the Foreteller is revealed to be Foreteller Ava, and that Player's quest was a test of their character to see if they are worthy joining the Dandelions and going on to the Realm of Light to avoid the impending Keyblade War. Skuld accepts the offer, but Player remains uncertain if they should join Ephemer, who has gone on to the Realm of Light, or stay and fight to save the future. Later, they overhear two Keyblade warriors accusing each other of stealing Lux from their Unions, and Player is forced to fight Foreteller Aced, who defeats them. When Ira arrives to stop the fighting, Aced claims that he is collecting more Keyblade warriors to prepare for the upcoming war before he departs. Ira tells Player, Skuld, and Chirithy that the war cannot be avoided and tasks the trio to search for Foreteller Gula, who may know of a solution to avert the war.

When Gula is found, he reveals that the only one who stop the Keyblade War is the Master of Masters, who had disappeared along with the sixth apprentice, Luxu. Meanwhile, Ava tracks down Luxu, who had been ordered to watch the future unfold by the Master after discovering the contents of the "Lost Page" in the Book of Prophecies. Once Luxu reveals the truth about the events that have been occurring and the identity of the true traitor, a shocked and furious Ava engages Luxu in a duel, ringing the clock bell that signals the beginning of the war. Meanwhile, Skuld returns to her Union and Player encounters Nightmare Chirithy, who scorns them for avoiding the war. Nightmare Chirithy then summons the corrupted Keyblade wielder Heartless from earlier, forcing the Player to fight them. When Player emerges victorious, Nightmare Chirithy dissolves into darkness, but vows to meet them again.

A few days later, the Keyblade War begins and Player battles four Foretellers before collapsing in exhaustion. The war ends with numerous Keyblades planted in the ground, forming the Keyblade Graveyard. On the brink of death, Player loses consciousness as Chirithy, Skuld, and Ephemer approach them.

Some time later, Player wakes up to Chirithy at a simulation of Enchanted Dominion. Chirithy claims that the events of the Keyblade War have been a dream Player has had ever since turning down Ava's offer to join the Dandelions, and the two decide to rest after confronting a wall of thorns. On the other side of the thorns, Maleficent (who is heavily implied to have found the Book of Prophecies) congratulates herself with what she has accomplished. Confident that Sora and company cannot meddle in this world, she contemplates on conquering the new world that she has entered in.


It is the world of a distant fairy-tale. The world is full of light. Various worlds are born in that light and so the light envelops them. From the source of Kingdom Hearts' light, there is a χ-blade that is protected. To that limit, the worlds believed in the eternal light. However, a strong light creates a dark shadow. From that darkness, anxiety and fear awakened their desire. With the darkness hidden within the depths of their hearts awakened, chaos began to spread across the worlds. In order to stop the spread of darkness, those who seek the light created a copy of the χ-blade, a Keyblade, and an adventure concerning the fate of the worlds began.

Message from the KINGDOM[4]

Connection to Kingdom Hearts III[]

You've really shaped up as a Keyblade Wielder, haven't you. Uh-huh, you're looking really fine, too! I think it's time to tell you, then. Before my master, He who created me, disappeared, He bestowed His six followers with new names, and gave five of them a tome of prophecy. These five followers, who were to become the Foretellers, read the future written in the tome. "The war in that place will lead to the defeat and destruction of the Light. The World will be enveloped in eternal Darkness." In order to save the future World, the five Foretellers thought to use the power hidden in the tome of prophecy. That's the power you are all using now. Through the cards, you are using the power of the future to try and protect the light from the darkness, and avert the future enveloped in darkness. Also, as you know, even though the five Foretellers share the same goal, they by no means share the same will. So, you mustn't lose sight of it yourself.



Players are able to create their own unique characters in the same style and fashion originally present in Kingdom Hearts Mobile and Kingdom Hearts Re:coded's Avatar Menu. Battles consist of a strategic card-battling mechanic with a large emphasis on collecting cards and items. Cards can also be synthesized to level and evolve stronger cards and materials can be synthesized to strengthen the Keyblade's abilities. All controls, including moving around the field and battling, use the mouse. While the game can be experienced in single-player, cooperative multi-player is an emphasized element as cooperative gameplay is required to defeat raid bosses, which appear several times throughout the day. Additionally, players go into five Unions in which players defeat enemies together to collect light known as "Lux". At the end of each week, the total amount of Lux for each team is calculated, and the team that gathered the most takes part in a mission where players can obtain special rewards.

Action Points (AP)[]

This article is about '. You may be looking for Ability Points or Attack Points'.

AP, or Action Points, determine how much actions, such as opening chests, inspecting objects, and battling Heartless, the player can execute, each one consuming a determined amount of AP. Opening a a treasure chest, for example, costs 3 AP. If the player runs out of AP, they will not be able to take certain actions. AP can be replenished by consuming items, such as Potions, that replenishes 10 AP, or Mega-Potions, that replenishes all AP; leveling up; or by allowing time to pass.

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Battle Points (BP)[]

BP, or Battle Points, are used to increase the damage the player deals to Raid Bosses. The first time the player enters in each Raid Boss screen, it can get a x4 multiplier for 0 BP, but after that, it will cost 3 BP, while a x2.5 multiplier will cost 2 BP, and a x1 multiplier will cost only 1 BP. BP can be replenished by consuming Ethers, that replenishes 1 BP, Mega-Ethers, that replenishes all BP, leveling up, and by allowing time to pass.

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