Prerequisite: Priority: The Citadel II (Mass Effect 3)
Orisoni is composed of four worlds, three of which are terrestrials while one is a gas giant. Egalic has eezo resources coveted by the Elkoss Combine, but negotiations with the asari stalled in light of the Reaper invasion. As only Niacal is habitable, the Reapers focused their attacks on this world.
Egalic[]
Egalic is the fourth planet orbiting the star Orisoni.
- Main article: Egalic
Kralla[]
Kralla is the third planet orbiting the star Orisoni.
- Main article: Kralla
Niacal[]
Niacal is the second planet orbiting the star Orisoni.
- Main article: Niacal
Thissioni[]
Thissioni is the first planet orbiting the star Orisoni.
- Main article: Thissioni