Traveling between each world requires Sora's party to fly through space in a Gummi Ship. The Gummi Ship can be completely customized from speed and armor to weapons and shape out of parts picked up from destroyed Gummi Ships found in worlds or bought from a store. Larger more complex ships can be built as the game progresses and plans can be found from destroyed enemies or from an NPC that will automatically build a Gummi Ship of specific specifications.