Terra

Terra is the planet.

Ieros
Ieros is the second largest nation in Terra. The Wind Crystal resides there.

Genesia
Genesia is a nation believed to be the birthplace of all nations. These legends arose after the discovery of the Power, Space, and Time Orbs, which are said to have created the world billions of years ago. It is home to Vidar and Mercury.

Polaris
Polaris is a small, northern island covered in snow. It was the birthplace of TBS.

Olympia
Olympia is a technologically advanced militaristic nation. During the events of Ace Adventure II, they are at war with the nation, Desolato. They are in possession of the Lightning Crystal and the Water Crystal.

Desolato
Desolato was once a prosperous nation, but due to ongoing war with its northern nation, Olympia, it was reduced to a war-torn country.

Fortuna
Fortuna is the largest nation in Terra. The Earth Crystal resides there.

Glasera
Glasera is a small, icy island surrounded by smaller islands. The Ice Crystal resides there.

Lost Island
The Lost Island is a small island to the east or Ieros. The Elemental Village and Fenrir Laboratories are located on this small island.

Smoldering Mountains
The Smoldering Mountains are located on a small volcanic island to the east of Olympia.

Castaway Island
Castaway Island is the location where FENRIS returns to Terra.