The clip, released Monday, features Sora and friends meeting with the Big Hero 6 crime-fighting team including Baymax inside the film's setting of San Fransokyo.
Baymax and Sora and then seen teaming up together to battle the Heartless across the rooftops of San Fransokyo.
The trailer also includes looks at Mickey Mouse, a number of returning Kingdom Hearts characters and world's based on Disney films Tangled, Pirates of the Caribbean and Frozen. One combat sequence features a pirate ship fighting off a giant octopus.
Kingdom Hearts 3 is set for release for the Playstation 4 and Xbox One on Jan. 29. Toy Story and Monsters Inc. will also be featured worlds in the game.
Square Enix also released on Twitter Monday the cover art for Kingdom Hearts 3, featuring artwork done by series director Tetsuya Nomura.
As we draw closer to the launch of #KingdomHearts III we'd like to show you all the cover art for the game!— Kingdom Hearts (@KINGDOMHEARTS) September 18, 2018
This stunning piece, featuring a number of iconic characters, was created by series director Tetsuya Nomura.#KH3sharethemagic
Pre-order now: https://t.co/7KLnoFbgoZ pic.twitter.com/qRwRgg9JBk