Known as "Star Gate" in the past, the nation served as the Star Gate of Planet Cray to visitors from other dimensions. Incorporating the technology of the Planet "Brandt", it maintains its advanced culture and national power in the new era through its high level of technological development. The citizens of Brandt Gate continue to fight threats from other worlds at the borders of this world. Brandt Gate is focused around the use of Set Orders, the nation uses different types of Set Orders for various purposes, while its support cards either search those Set Orders or generate advantage when the player has specific types of Set Orders.

Below are all the playable and buildable decks within the Brandt Gate nation.

The Aurora Battle Princess series focuses on Prison Orders, which allow the player to control the opponent's field by Imprisoning their Units in it, the opponent then must pay costs to get back the imprisoned Units which drains their resources.

The Cardinal series focuses on World Orders, which grant the player benefits based on how many World Orders they have accumulated. The World Orders themselves do an action when they are Set.

The Gravidia series focuses on Meteorite Orders, which are accumulated en masse to then be used to retire opponent rear-guards or gain resources when a certain amount of meteorites are Set.