Stellaris Federations

Stellaris Federations is an expansion for Stellaris that adds new ways to shape your empire’s diplomacy and influence events across the galaxy. You can build stronger federations, participate in a galactic senate, choose an Origin that defines your empire’s background and starting conditions, and construct new megastructures and ships.

Federations and the senate

Expanded diplomacy lets you strengthen your Federation’s internal cohesion and unlock rewards for its members. You can join a Trade League, Martial Alliance or Hegemony.

The Galactic Community brings space empires together in a senate that votes on resolutions. These can increase commitments to collective defense or direct profits toward wealthy elites. Members can sanction empires that defy the community and establish a single galactic focus. You can trade favors and maneuver to sway the senate and gain influence among its members.

Empire origins

The Origins system gives each empire a background that shapes its path and changes its starting conditions. Void Dwellers, for example, have left their homeworld to live in perpetual orbit; another Origin centers on a society that worships and protects a powerful Tree of Life.

New constructions

The expansion adds new projects for your empire, including:

• Juggernaut: a massive mobile starbase that provides a movable repair base, even in enemy territory.
• Mega Shipyard: a megastructure that can produce fleets at great speed.