Kingdom Hearts

==Connections to the ''Final Fantasy'' series==
Besides the numerous characters from the ''Final Fantasy'' series that appear, several other aspects of the series directly influence the gameplay of ''Kingdom Hearts''. The series uses the same naming patterns as ''Final Fantasy'' for its spells and items, items and spells such as [[Hi-Potion]]s, [[Tent]]s, [[Fire (ability)|Fire]] and [[Stop (ability)|Stop]] appearing, among many others. The series also universally uses the same spell suffix systems as ''Final Fantasy'', "-ra" denoting tier two spells and "-ga" denoting tier three. There are [[Summon (command)|Summon]] spells that can call allies into battle, using mechanics similar to the summon sequences of ''[[Final Fantasy X]]''. Although the summons are all Disney characters (except for a Cloud summon in ''Chain of Memories''), a [[Bahamut]] summon was meant to be in the original game, but was later removed as the development team decided that all the summons in the game were to be of iconic Disney characters instead.

Several weapons are named after ''Final Fantasy'' weapons, including the [[Ultima Weapon (weapon)|Ultima Weapon]], [[Fenrir (Final Fantasy VII)|Fenrir]], and [[Save the Queen]]. The various Gummi ships used to travel between worlds are named after ''Final Fantasy'' ships and concepts, and include ''[[Highwind (Final Fantasy VII)|Highwind]]'', ''[[Falcon (Final Fantasy IV)|Fal]][[Falcon (Final Fantasy VI)|con]]'', and ''[[Invincible (Final Fantasy IX)|Invincible]]''. Ability Points are used to assign various special attacks and support powers to party members. In ''Kingdom Hearts II'', [[Limit Break (ability)|Limit Breaks]] appear as techniques that allow Sora and an ally to unleash a series of powerful attacks at the cost of all Sora's MP. Some of these Limit Breaks, like [[Bushido (command)|Bushido]] and [[Comet (ability)|Comet]], again take their name from ''Final Fantasy'' games. In ''Birth by Sleep'' the player is able to fuse commands together to create stronger ones and can infuse items in the fusion to attach abilities to the new command, identical to [[Materia Fusion]] in ''Crisis Core''.

The Nobody enemy types are based on recurring ''Final Fantasy'' jobs and show some similar behavior—[[Dragoon (job)|Dragoon]] Nobodies fight with lances and use Jump attacks, and [[Gambler (job)|Gamblers]] battle using dice and cards. The Organization members themselves also roughly fit such profiles—for example, Zexion can mimic the attacks of enemies similar to a [[Blue Mage]]. Each member also controls one element, such as [[Water (element)|Water]], [[Holy (element)|Light]], and [[Earth (element)|Earth]]. Besides Nobodies, several Heartless are named for ''Final Fantasy'' enemies, such as the Behemoth and Darkside. Several enemies also masquerade as pots or jars until attacked, or hide in treasure chests and attack when they are opened, a reference to [[Mimic (enemy)|mimics]] and [[Monster-in-a-box]].

When fighting in Olympus Coliseum, Sora uses victory poses based on Squall and Cloud's, while Roxas uses Squall's victory pose in ''358/2 Days''. Riku's growth through the series parallels [[Kain Highwind]], and to a lesser degree [[Cecil Harvey]]. Similar to the two, Riku began the series as an antagonist using the powers of darkness and was manipulated by Xehanort, but reformed and become a heroic character that joined Sora on his adventures, now using the powers of darkness to fight for light. Riku's signature weapon, Soul Eater, is named after Cecil's ability as a Dark Knight, and similar to Kain and Cecil's love triangle with [[Rosa Joanna Farrell|Rosa]], it is strongly hinted Sora and Riku have romantic feelings for their mutual friend Kairi, with Sora being the victor in the competition.

[[File:WoFF Sora.png|180px|right|thumb|Sora in ''World of Final Fantasy''.]]
The ''Kingdom Hearts'' series in turn has retroactively influenced the ''Final Fantasy'' series. ''Kingdom Hearts'' was the first game to feature Sephiroth with a single black wing behind his right shoulder, an element of his appearance that was later included in the ''[[Compilation of Final Fantasy VII]]''. Gameplay elements of ''[[Dissidia Final Fantasy (2008)|Dissidia Final Fantasy]]'' are influenced by ''Kingdom Hearts'', such as chaining attacks in different ways based on the timing of button presses. [[Quickmove]] and [[Chase Sequence]]s are similar to Reaction Commands in ''Kingdom Hearts II'', and [[EX Mode (term)|EX Mode]] is similar to Sora's Drive Forms in the same game, granting an enhanced set of abilities and an altered appearance for a short time while Sora's Drive Gauge depletes over time, reverting form when it empties. In addition, the main antagonist of ''[[Final Fantasy XV]]'', [[Ardyn Izunia]]'s hair color was inspired in part by Keiji Fujiwara's role as Axel from the ''Kingdom Hearts'' series.<ref>{{Refwebsite| page url = https://gematsu.com/2013/06/final-fantasy-xv-the-big-interview-summary| page name = Final Fantasy XV: the big interview summary| site url = https://gematsu.com| site name = Gematsu| access time = 01:57, July 07, 2019 (UTC)}}</ref>

Sora makes his first appearance in a ''Final Fantasy'' game with a guest appearance in ''[[World of Final Fantasy]]''. He is a free DLC character as a Summonable Champion during battle.

In February 2018, a [[collaboration]] was launched between the mobile arms of both ''Kingdom Hearts'' and ''Final Fantasy'', which sparked a month-long series of events. This collab opened with a website featuring a shooter minigame and developed into playable events for both franchise games.