Chaining is a game feature that is only available in Kingdom Hearts 358/2 Days. Chaining increases the amount of heart points collected, but only by a little. The increase becomes higher if the chain continues by defeating more Emblem Heartless. To start a proper chain, an Emblem Heartless must be defeated. It must be done in the limited time before the chaining time runs out. Abilities like Chain Time can increase the time limit. Chaining a boss Emblem Heartless will give a significant increase. However, if you defeat a Pureblood Heartless and then defeating an Emblem Heartless (eg: Shadow>>>Yellow Opera), there will be no increase. However, Purebloods can hold the chain and keep it going (eg: Yellow Opera>>>Shadow>>>Yellow Opera = Increase). Maxing out a chain is also special. If an Emblem Heartless is defeated when the chain is maxed out, the increase will be the equivilent of the number of hearts the Heartless releases.
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In the top left corner is the Chaining counter.
