Theater Mode

Theater Mode is a mode unlocked in Kingdom Hearts Final Mix, Kingdom Hearts II Final Mix, Kingdom Hearts Re: Chain of Memories, and Kingdom Hearts 358/2 Days. It allows the player to rewatch all voiced cutscenes in the game after beating it.

Kingdom Hearts Final Mix

 * Complete the game.

Kingdom Heats II Fnal Mix

 * Complete the game.

Kingdom Hearts Re:Chain of Memories

 * Clear Sora's story, then Riku's to unlock the other cutscenes.

Kingdom Hearts 358/2 Days

 * Clear Story Mode.

Kingdom Hearts 358/2 Days

 * Opening
 * Meet Xion
 * The Dark Margin
 * The Man in Black Reflects
 * Xion's Defeat
 * Naminé and DiZ
 * Why the Sun Sets Red
 * Snarl of Memories
 * Riku Takes Care of Xion
 * Roxas Passes By
 * Xion's Dream
 * Xion's Capture
 * Axel and Saix
 * Xion and Riku
 * Riku's Resolve
 * Mickey and Riku-Ansem
 * Roxas Leaves the Organization
 * Xion and Namine
 * Xion and Axel Face Off
 * Xion Attacks
 * Xion's End
 * WINNER
 * Skyscraper Battle
 * Roxas and Riku
 * Riku Turns Into Ansem
 * After the Battle
 * A New Day
 * The Usual Spot

Trivia

 * While Theater Mode was first introduced in the Final Mix versions of Kingdom Hearts and Kingdom Hearts II, its American debut was not until the release of Re: Chain of Memories.
 * It is currently unknown if Kingdom Hearts coded and Kingdom Hearts Birth by Sleep will contain Theater Mode. It is likely, however, since this feature has carried on through the more recent additions to the series outside from the Final Mixes.