Before participating in a duel, the deck being used must be registered for legal purposes. Any duels won with unregistered decks are invalid and subject to forfeit. This applies to all duelists.

The first floor that one would see upon entering the academy, the main floor houses many of the academy's facilities. Many new students tend to come here to meet others and learn a bit about the academy.

Sub-boards: Duel Arenas, Infirmary, Cafeteria, Library, Gymnasium

Even though the academy is based around dueling it is still, by technicality, a school and as such is required to hold classes. Located on the second floor of the academy, this is where all classes are to be held unless otherwise stated by the instructors.

Sub-boards: Dueling 101, Duel Tactics, Deck Construction, History of Duel Monsters

Located on the third and final floor of the academy are the professors' offices. Professors come here to do their paperwork or lounge around in peace and quiet, though students are free to come and ask for help or advice from their professors.

The members of Ra are the average duelists of Duel Academy; not the elite, but not the abysmal. They boast yellow as their colors; yellow jackets and yellow duel discs.

Osiris Red houses the students who got below 50% in their grading. They have a long way to go. Their color is red, red jackets and red duel discs.

The only beach on the island, the Academy Beach is a popular place for students and professors alike to relax and enjoy themselves. Although the area is normally populated by a handful of students, there are usually a few areas where one can find some peace and quiet here.

Sub-board: Ocean Caves

Covering a majority of the island, the Duel Academy's forest is rumored to hold many untold mysteries within it's cover. Students are allowed to roam the forest as they will, but are discouraged from doing so after nightfall.

Sub-boards: Abandoned Dorm, Amazon Arena, Pegasus Springs

Sometimes referred to as 'The Green District', Domino's recreational district has many attractions and sights for both tourists and locals to enjoy. The district also includes the local beach due to its close proximity to water.

Sub-boards: Stardust Restaurant, Domino City Park, Noontide Beach

Domino City's residential district is mostly filled with houses and apartment buildings. There is a small park in the center of the district, but its nothing too special. Most citizens of the city live within this area.