Synthesis

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Synthesis is a recurring gameplay feature in the Kingdom Hearts series that allows new gear to be created from synthesis materials that are collected throughout the various Worlds. Many of the most powerful pieces of equipment in the series, such as the Ultima Weapon, are obtained through synthesis. Moogles are experts in synthesis, so Moogle Shops are the domain of synthesis in many games.

Item synthesis

Item synthesis (アイテム合成, Aitemu gōsei) allows powerful items, weapons, armor and accessories to be created from synthesis materials collected across the worlds. New items are unlocked for synthesis by fulfilling certain criteria that vary from game to game. Each item can be synthesised as many times as desired so long as the required materials are available, except for the Ultima Weapon which can only be made once. Item synthesis can only be carried out at Moogle Shops.

Kingdom Hearts

The Item Workshop in Kingdom Hearts.

Item synthesis can be carried out at the Item Workshop, located in Traverse Town above the Accessory Shop in the First District after using the green Trinity Mark in the Accessory Shop. The word "Mix" appears besides items that have already been synthesised at least once already. After every item has been synthesized at least once, Sora inherits the title of "Master Synthesist" from the moogle in the corner closest to the entrance to the workshop.

Every item informally belongs to a synthesis set, which progress in the power of the items and the rarity of synthesis materials. The first set is available upon accessing the workshop. Subsequent sets must be unlocked by synthesising a certain number of unique items from the previous sets.

In Kingdom Hearts, there are 25 items in total that can be synthesised, which are grouped into five sets. Lists I-IV each contain six items, whereas List V only has Ultima Weapon. In Kingdom Hearts Final Mix, there are 33 items and six sets. Lists I-V each contain six items, whereas List VI is reserved for Ultima Weapon, Fantasista, and Seven Elements. Moreover, the new Encounter Plus ability is rewarded after 15 unique items are synthesised.

Set Items Unlocked List I Cottage, Elixir, Energy Bangle, Power Chain, Guard Earring, Dark Ring Available upon accessing workshop. List II Mega Potion, AP Up, Angel Bangle, Magic Armlet, Golem Chain, Master Earring Create four unique items on List I. List III Mega Ether, Defense Up, Gaia Bangle, Rune Armlet, Heartguard, Three Stars Create ten unique items on Lists I and II. List IV Megalixir, Power Up, Titan Chain, Atlas Armlet, Crystal Crown, Ribbon Create fifteen unique items on Lists I-III List V Ultima Weapon Create all twenty-four unique items on Lists I-IV. Set Items Unlocked List I Mega Potion, Cottage, Energy Bangle, Power Chain, Magic Armlet, EXP Earring Available upon accessing workshop. List II Mega Ether, Guard Earring, Angel Bangle, Golem Chain, Rune Armlet, Moogle Badge Create three unique items on List I. List III AP Up, Dark Ring, Master Earring, Gaia Bangle, Titan Chain, Mythril Create nine unique items on Lists I and II. List IV Elixir, Defense Up, Heartguard, Three Stars, Atlas Armlet, Crystal Crown Create fifteen unique items on Lists I-III List V Megalixir, Power Up, Cosmic Arts, EXP Bracelet, Ribbon, Dark Matter Create all twenty-one unique items on Lists I-IV. List VI Fantasista, Seven Elements, Ultima Weapon Create all thirty unique items on Lists I-IV.

Kingdom Hearts II

Item Synthesis in Kingdom Hearts II.

Item synthesis can be accessed at Moogle Shops where resources and progress carries over across all worlds, despite Moogle Shops selling different items in different worlds. Each visit to the synthesis menu deposits all synthesis materials from Sora's inventory to the Moogle Shop.

Items can either be synthesised for the first time via Free Development or Recipes. Items from the former menu are unlocked by achieving Collector's Goals and upgrading the moogle's level, whereas items from the latter menu are attached to particular recipes that are obtained as rewards from chests and bosses. Items that have already been synthesised at least once appear in the Creations tab.

Kingdom Hearts II introduces special synthesis materials that may be added to recipes of the same rank to achieve certain modifications. Bright materials double the experience awarded to the moogle, Energy materials halve the amount of materials required, and Serenity materials can be used to upgrade some items into more powerful forms. Special materials can only be used upon reaching the appropriate moogle level. At level 4, two kinds of special materials may be used at the same time.

A Rank from C, B, A, or S is assigned to each synthesis material and synthesised item. Higher rank synthesis materials are generally rarer and used to make higher rank items that are more powerful and tend to award more synthesis experience. In order to use a special material in the synthesis of an item, the rank of the special material must match the item's rank.

In addition to receiving the items, item synthesis awards the moogle with experience, which increases the moogle's level. Levelling up grants perks, such as the ability to use special materials, halving the materials required for synthesis, and unlocking new items in Free Development.

• Amateur Moogle (LV1) - Recipe and Free Development items can be created.
• Novice Moogle (LV2) - Brightness or Energy Materials can be used in recipes.
• Junior Moogle (LV3) - Serenity Materials can be used.
• Skilled Moogle (LV4) - Two kinds of special materials (Brightness, Energy, or Serenity) can be selected at a time.
• Senior Moogle (LV5) - Rank C items are at half-cost.
• Artisan Moogle (LV6) - Rank B items are at half-cost.
• Master Moogle (LV7) - Rank A items are at half-cost.
• Superior Moogle (LV8) - The strongest items in Free Development are unlocked.
• Primo Moogle (LV9) - Rank S items are at half-cost.

Unlock criteria Items Obtain five types of materials Firaga Bangle, Firagun Bangle, Blizzaga Armlet, Blizzagun Armlet, Thundaga Trinket, Thundagun Trinket, Midnight Anklet, Chaos Anklet, Garnet Ring, Diamond Ring, Mythril Ring, Orichalcum Ring Obtain twenty types of materials Acrisius, Acrisius+, Power Band, Buster Band, Soldier Earring, Fencer Earring, Mage Earring, Slayer Earring, Expert's Ring, Master's Ring, Mythril Shard, Mythril Stone Superior Moogle (LV8) Mythril Gem, Mythril Crystal, Serenity Crystal[KH II FM], Manifest Illusion[KH II FM] Recipe Items Obtained Guard Recipe (ガードレシピ, Gādo Reshipi) Defense Boost, Power Boost 100 Acre Wood, the Exposition Minigame in the Spooky Cave. King Recipe (キングレシピ, Kingu Reshipi) Save the King, Save the King+ Chest at the Ship Graveyard: Seadrift Row. Mega Recipe (メガレシピ, Mega Reshipi) Mega-Potion, Mega-Ether Chest at The Beast's Room[KH II] Chest at Belle's Room[KH II FM] Moon Recipe (ムーンレシピ, Mūn Reshipi) Moon Amulet, Star Charm Chest at the Restoration Site. Queen Recipe (クイーンレシピ, Kuīn Reshipi) Save the Queen, Save the Queen+ Chest at the Throne Room. Recovery Recipe (リカバーレシピ, Rikabā Reshipi, lit. "Recover Recipe") Drive Recovery, High Drive Recovery Chest at the Mountain Trail. Skill Recipe (スキルレシピ, Sukiru Reshipi) AP Boost, Magic Boost Hollow Bastion, second visit in Ansem's Study. Star Recipe (スターレシピ, Sutā Reshipi) Elixir, Megalixir Disney Castle, in the Courtyard. Style Recipe (スタイルレシピ, Sutairu Reshipi) Petite Ribbon, Ribbon Chest at the Starry Hill. Ultimate Recipe (アルテマレシピ, Arutema Reshipi, lit. "Ultima Recipe") Ultima Weapon Chest at the Mansion: Basement Corridor. Rare Document (レアドキュメント, Rea Dokyumento)[KH II FM] Draw Ring, Lucky Ring Complete the "Duality" Puzzle in Jiminy's Journal. Book of Shadows (影の書物, Kage no Shomotsu)[KH II FM] Shadow Archive, Shadow Archive+ Defeat Zexion's Absent Silhouette. Cloaked Thunder (ひめたる雷, Himetaru Ikazuchi)[KH II FM] Shock Charm, Shock Charm+ Defeat Larxene's Absent Silhouette. Strength Beyond Strength (力をこえる力, Chikara o Koeru Chikara)[KH II FM] Centurion, Centurion+ Defeat Lexaeus's Absent Silhouette. Eternal Blossom (かれない花, Karenai Hana)[KH II FM] Full Bloom, Full Bloom+ Defeat Marluxia's Absent Silhouette. Road to Discovery (究明の導き, Kyūmei no Michibiki)[KH II FM] Frozen Pride, Frozen Pride+ Defeat Vexen's Absent Silhouette.

Kingdom Hearts III

Item synthesis can be accessed through the Workshop at any Moogle Shop. Synthesis materials from the stock are deposited to the Moogle Shop with each visit. All items are synthesised from a single menu with no marker present to distinguish items that have already been synthesised at least once. However, Jiminy's Journal lists every synthesised item under the "Synthesis" section and the "Synth Log" at the Workshop menu specifies the total number of unique items that have been synthesised.

Compared to Kingdom Hearts II, Kingdom Hearts III features a simpler synthesis system that omits recipes, special materials, and moogle levels. Instead, new items are unlocked for synthesis by completing Collector's Goals and Photo Missions.

Criteria Items Obtain 2 different synthesis materials. Fire Bangle, Shadow Anklet, Ability Ring+ Obtain 4 different synthesis materials. Elven Bandana, Thunder Trinket, Blizzard Choker Obtain 6 different synthesis materials. Mythril Shard Obtain 8 different synthesis materials. Wind Fan, AP Boost Obtain 10 different synthesis materials. Fira Bangle, Thundara Trinket, Blizzara Choker Obtain 12 different synthesis materials. Technician's Ring+, Hi-Ether, Mega-Potion Obtain 15 different synthesis materials. Dark Anklet, Mythril Stone Obtain 18 different synthesis materials. Warhammer+, Clockwork Shield+, Skill Ring+ Obtain 20 different synthesis materials. Refocuser, Mega-Ether Obtain 22 different synthesis materials. Strength Boost, Magic Boost, Defense Boost Obtain 25 different synthesis materials. Firaga Bangle, Blizzaga Choker, Thundaga Trinket Obtain 28 different synthesis materials. Divine Bandanna, Storm Fan, Midnight Anklet Obtain 30 different synthesis materials. Pulsing Crystal, Blazing Crystal, Frost Crystal, Lightning Crystal Obtain 32 different synthesis materials. Hi-Refocuser, Mythril Gem, Lucid Crystal, Soothing Crystal Obtain 35 different synthesis materials. Phantom Ring, Sorcerer's Ring, Writhing Crystal Obtain 38 different synthesis materials. Firaza Bangle, Blizzaza Choker, Thundaza Trinket Obtain 40 different synthesis materials. Chaos Anklet, Acrisius Obtain 42 different synthesis materials. Aegis Shield+, Astrolabe+, Elixir, Mythril Crystal Obtain 45 different synthesis materials. Buster Band, Orichalcum Ring, Wisdom Ring Obtain 48 different synthesis materials. Heartless Maul, Nobody Guard Obtain 50 different synthesis materials. Buster Band+, Acrisius+, Megalixir Obtain 52 different synthesis materials. Heartless Maul+, Nobody Guard+ Obtain 55 different synthesis materials. Save the Queen, Save the King, Cosmic Chain Obtain 58 different synthesis materials. Ultima Weapon, Save the Queen+, Save the King+ Target Unlocked Item Flame Core Obtain Gummiphone Firefighter Rosette Water Core Obtain Gummiphone Umbrella Rosette Chief Puff Complete Twilight Town Mask Rosette Statue of Hercules (Thebes) Complete Twilight Town Cosmic Ring Beasts & Bugs wall display (Galaxy Toys) Visit Galaxy Toys Soldier's Earring Rapunzel's tower (The Forest) Look at the Tower Mage's Earring Festival (The Kingdom) Visit The Kingdom Moon Amulet Fire in the secluded forge (Realm of the Gods) Complete Toy Box and Kingdom of Corona Fire Chain Zeus (Realm of the Gods) Complete Toy Box and Kingdom of Corona Thunder Chain Tram (The Neighbourhood) Complete Toy Box and Kingdom of Corona Draw Ring CDA Agent (The Power Plant) See the CDA agents Insulator Rosette Ice palace (The North Mountain) Visit Arendelle Blizzard Chain Olaf (The North Mountain) Meet Olaf Snowman Rosette Big green cactuar (Galaxy Toys) Complete Monstropolis and Arendelle Fencer's Earring Scarecrow (Rabbit's House) Visit 100 Acre Wood Slayer's Earring Evening star (The City) Visit The City Star Charm Fish-shaped wind socks in daylight (The City) Visit The City Aero Armlet Waterfall (Port Royal) Visit Port Royal Aqua Chaplet Demon Tower Complete The Caribbean and San Fransokyo Dark Chain Each teammate Complete The Caribbean and San Fransokyo Petite Ribbon

Panel synthesis

Synthesis is available in Kingdom Hearts 358/2 Days in the form of panel synthesis. This feature is accessed through the Organization XIII-affiliated moogle, who is found in the Grey Area of the Castle that Never Was and, after Roxas leaves the Organisation, Twilight Town.

The synthesis of a panel requires certain ingredients and some munny. In addition to material panels, which replace traditional synthesis materials, ingredients may also include item panels, magic panels, and ring panels. Recipes reappear but they do not unlock new panels for synthesis, rather recipes are a form of material panel that are consumed in the synthesis of some panels.

New panels are unlocked for synthesis by progressing through the game to upgrade Roxas' rank. Each time Roxas is promoted within the Organization, the moogle offers new items for sale and synthesis. In addition to requiring a certain rank, some items are only unlocked once certain materials needed for their synthesis are collected. For example, many Gears become available after the appropriate Gear Component is acquired.

Rank	Criteria	Panels
Novice	Reach Day 26	All synthesizable item panels, magic panels, ability panels, and some ring panels
Rookie	Reach Day 117	All synthesizable weapon panels
Legend	Complete the game	The remaining synthesizable ring panels

Throughout the story, Organization XIII members hanging around the Grey Area occasionally ask Roxas to synthesise particular panels for them, sometimes even providing some necessary ingredients. Completing these optional tasks results in small rewards, typically rare material panels. These tasks can only be completed on the days they are given; they cannot be completed after progressing the story further.

Keyblade upgrades

Kingdom Hearts χ

Each Keyblade begins in their base form, equivalent to level 0, and can be upgraded to a maximum of level 50. The appearance of a Keyblade changes as it evolves and certain level milestones are reached. Raising a Keyblade's level requires synthesis materials, most of which are typically found in the world of the Keychain's origin. The rarest materials, however, are mainly obtained from limited-time events or purchased with premium currency.

In Kingdom Hearts χ, Keyblades are upgraded from the Keyblade menu. Levelling a Keyblade offers better cards and increases its Keyblade Bonus. A Keyblade's appearance can change up to a maximum of five times.

In Kingdom Hearts Union χ, Keyblades are upgraded from the Equipment menu. Levelling a Keyblade increases the medal boosts associated with particular medal slots. New medal slots entirely, including Upright and Reversed slots, are unlocked at specific levels. Additionally, each Keyblade level up increases the Special Attack Gauge and Friend bonus. A Keyblade's appearance can change up to three times in total.

Kingdom Hearts III

Keyblades can be upgraded at The Keyblade Forge, which can be accessed through the Workshop at Moogle Shops. Each Keyblade starts at a level ranging from 0 to 10 when it is obtained; upgrading to higher levels boosts the Keyblade's strength and magic, and unlocks abilities that are active when wielding it. The max level of every Keyblade is 10.

Keyblade(s)	Starting Level
Kingdom Key, Hero's Origin, Shooting Star, Classic Tone, Starlight, Oathkeeper, Oblivion, Midnight Blue, Phantom Green, Dawn Till Dusk, Elemental Encoder	0
Favorite Deputy, Ever After	1
Happy Gear, Crystal Snow, Grand Chef	2
Hunny Spout, Nano Gear, Wheel of Fate	3
Ultima Weapon	10

Raising the level of a Keyblade requires particular synthesis materials, unique to that Keyblade. Rarer materials are needed for higher levels and stronger Keyblades. In order of increasing rarity, Fluorite, Damascus, Adamantite, and Electrum are materials that are strongly tied to Keyblade upgrades as each level upgrade requires one of these materials. The synthesis materials used at the Keyblade Forge are shared with those used in item synthesis.

Other types of synthesis

Room Synthesis

In Kingdom Hearts Chain of Memories, new rooms are created at doorways using map cards, which are obtained from enemies. The type of room created depends on the map card used. A doorway may have certain criteria on which map cards can be used on it, such as a specific colour or high value. Map cards that satisfy certain conditions must also be used for special rooms that are opened with a keycard.

Command Meld

Instead of a traditional synthesis system accessed through moogles, Kingdom Hearts Birth by Sleep features the Command Meld system, where new Deck Commands can be created by combining specific pairs of deck commands. Most deck commands must first be mastered before they can be used as ingredients. Synthesis materials may be added to the mix to attach Abilities to the resulting command.

Although the Command Meld menu lists any pairs of compatible Commands at all times, the resulting Command is not listed until the appropriate Recipe is obtained. Unlike in other games, any command can be melded without its recipe; the recipe simply shows what the resulting command will be before melding occurs. Command Meld can be done anywhere through the field menu and does not need to be carried out at a particular workstation.

Ice Cream mixing

In Kingdom Hearts Birth by Sleep, ice cream commands can be made at the Ice Cream Shop in Disney Town from flavors collected from Prize Pods. Each ice cream is made from different flavors and can only be created after its respective Command Style is unlocked. After an ice cream has been created once, it also becomes available for sale. The Sweetstack Keyblade is obtained after all ice creams are made.

Command Conversion

Kingdom Hearts Re:coded features the Command Conversion system, which can be accessed from the Command Matrix in the field menu. A pair of commands can be converted into a single, new Deck Command, similar to the Command Meld system from Birth by Sleep. The main difference is that the new command is usable as soon as the pair of commands are put together, a feature known as "test-conversion". It is only after the ingredient commands accumulate enough Command Points (CP) that they can be permanently converted into the new command, after which the substituent commands are destroyed. A converted command may receive an Overspec bonus of gaining extra levels and filling the Clock gauge quicker, and/or having a faster reload time.

Spirit creation

In Kingdom Hearts 3D: Dream Drop Distance, synthesis revolves around the creation of new Spirits, since Deck Commands are mainly obtained from chests, shops, and Ability Link boards. Spirits can be created at any point from the field menu.

The creation of a Spirit requires certain Dream Pieces, which act as synthesis materials. Unlike previous games, the amount of materials needed in a particular synthesis is not fixed. Rather, a larger number of Dream Pieces may be used to create a Spirit to raise its rank and starting level. Additionally, a Deck Command may be used as an ingredient when making a Spirit to provide a particular stat boost to the Spirit.

There are many combinations of Dream Pieces that can be used to make Spirits and these combinations can be used at any point in the game, provided the required Dream Pieces are available. Only a silhouette of the resultant Spirit is shown before it is created, unless the appropriate Recipe has been obtained. Some combinations of Dream Pieces give two possible Spirits as outcomes.

Cooking

In Kingdom Hearts III, Sora and Remy can cook food at Le Grand Bistrot, which is in Twilight Town but can also be accessed from Save Points. Each dish is cooked from different ingredients that are obtained from props and Flan throughout the worlds. One of five brief minigames must be completed each time that a dish is cooked, although multiple servings of the same dish may be made in one go. Depending on the performance during the minigame, Sora may obtain nothing, standard versions of the dish, or improved ★★★ versions.

Cooking new dishes awards stars to the Bistrot. Dishes belong to two menus: the "Classic Menu", available from the start, and the "Special Menu", which is unlocked after enough stars are awarded. The Grand Chef Keyblade is obtained after the Bistrot is awarded five stars. Dishes that have been cooked before are listed in the "Recipe Collection" tab of Gummiphone.