Pegasus’ Island also known as Duelist Kingdom Island is a private island owned by Pegasus J. Crawford. It is famous for hosting the Duelist Kingdom tournament and for being a base of operations for Industrial Illusions Research and Design departments. It is a remote island in the Pacific Ocean, approximately 5 km wide.

Notable Events:
- Duelist Kingdom Tournament: Pegasus invited selected duelist from Japan to take part in the first tournament who crowned the “King of Duelists”.
Locations:
- Castle: Pegasus main residence, situated on top of a hill.
- Underground Caverns: the island had some underground caverns and even a maze built within.
Dueling Arenas:
- Dueling Arena n°02: 60% Wasteland, 40% Land.
- Dueling Arena n°10: 40% Mountain, 40% Forest, 20% Meadow. Duels: Mai vs Jonouchi.
- Dueling Arena n°11: 40% Forest, 40% Land, 20% Lake. Duels: Mai vs Panik. Yugi vs Panik.
- Dueling Arena n°12: 60% Land, 40% Sea. Duels: Mai vs Kajiki.
- Dueling Arena n°13: 100% Graveyard. Duels: Kotsuzuka vs Jonouchi, Kotsuzuka vs Mai.
- Dueling Arena n°15: 80% Forest, 20% Wasteland. Duels: Haga vs Yugi, Mai vs Anzu.
- Dueling Arena n°16: 50% Sea, 50% Rugged Coast. Duels: Yugi vs Kajiki.
- Dueling Arena n°33: 60% Forest, 40% Meadow. Duels: Mai vs Tournament Duelist.
- Dueling Arena n°45: 50% Meadow, 50% Wasteland. Duels: Ryuzaki vs Jonouchi.
- Dueling Arena n°146: 60% Land, 40% Forest. Duels: Mokuba vs Yugi, Impersonator of Death vs Yugi, Ryuzaki vs Kajiki.
- Dueling Arena in the Castle: 100% Castle Grounds. Duels: Pegasus vs Kaiba, Mai vs Yugi, Jonouchi vs Keith, Jonouchi vs Yugi, Pegasus vs Yugi.
- Dueling Arena in the Maze: 100% Arena. Duels: Brother Kyu + Brother Mei vs Jonouchi + Yugi, Brother Mei + Brother Kyu vs Mai + Kajiki.