Reaction Command

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The Sky Scraper Reaction Command as it appears in the Xemnas (Dragon) boss battle.

Reaction Commands are a feature introduced in Kingdom Hearts II, intended to extend the level of combat. By pressing in specific contexts, the player avatar will perform a specific action indicated by the title of the command. These reactions are generally combat maneuvers used to gain the upper hand against enemies, though they are also used for more mundane actions such as talking to other characters and opening chests. Occasionally, some Reaction Commands must be completed in order to end a battle. Only a select few Reaction Commands require the player to press the moment it appears; in Kingdom Hearts II, one can press until the command is initiated, suffering no penalty if is not pressed at the right moment. Only three Reaction Commands in the entirety of Kingdom Hearts II penalize such an action. In Kingdom Hearts Re:Chain of Memories, pressing too early during the execution of a Sleight prevents the attack from being completed.

Kingdom Hearts

Note: Reaction commands only appear within the Kingdom Hearts HD 1.5 ReMIX version of Kingdom Hearts Final Mix.

Kingdom Hearts Chain of Memories

Note: Reaction commands only appear within the Kingdom Hearts Re:Chain of Memories version.

Kingdom Hearts II

General reaction commands

Command	Description	Context
Talk (, )	Speak with a non-playable character.	When near a non-playable character. Certain rooms in each world will also lock battle commands and treat party members as non-playable characters.

Kingdom Hearts Birth by Sleep

General reaction commands

Command	Description	Context
Talk (はなす, Hanasu)	Speak with a non-playable character.	When near a non-playable character.
Open (あける, Akeru)	Open a Treasure Chest. Large chests initiate an animation; Terra forcefully taps the chest, Ventus throws his Keyblade in the air before tapping the chest, and Aqua twirls her Keyblade like a baton before tapping the chest.	When near a Treasure Chest.
Examine (しらべる, Shiraberu)	Interact with an object in the field. Sometimes triggers a cutscene.	When near an interactive object.
Save (セーブ, Sēbu)	Open the save menu.	When standing on a Save Point.
Shop (かいもの, Kaimono)	Open the shop menu.	When near a Moogle.
Use Transporter (, )	Teleport between the two platforms in the Hub of the Mirage Arena.	When standing on the circles at the edge of each platform.
Log In (, )	Open the menu to choose a Mirage Arena event.	When near the machine in the Hub.
Start (, )	Begin a Mirage Arena event.	When standing in the centre of the Hub after choosing a Mirage Arena event.
Proceed (先へすすむ, Sakiesusumu)	Continue to the Foyer.	When Terra is near Cinderella after escorting her to the end of the Corridor.
Goal (ゴール!, Gōru!)	End an escort sequence.	When Ventus is near Snow White after escorting her to the small clearing in the Deep Woods or when Aqua is near Jaq after escorting him to the entrance of the mousehole in the Wardrobe Room.