The Fortress acts as the Hub world for Mickey throughout the game, and is the place where the Characters he rescues find shelter.
In The Fortress Mickey can visit the characters he has rescued, and receive a variety of quests from them - some of which may be completed by simply visiting other characters in The Fortress.
Mickey can also buy upgrades for different abilities such as attack power and health and also receive stamps which allow him to draw desired objects or summon characters anytime he wants.
In The Fortress Main Hall, Oswald presides over a Toon Heart Meter which is filled by rescuing characters, and unlocks new areas of the castle when it is full.
