What changed in Sins of a Solar Empire®: Rebellion in 2026

The Harbinger Expansion introduces the Eidolon faction with new gameplay mechanics, ships, and structures.

A new animation system enhances the visual representation of Eidolon and other faction units.

The Eidolon faction introduces new gameplay mechanics centered around corruption, secrecy, and control.

Eidolon units infused with corruption may refuse to die and continue fighting.

Corruption empowers Eidolon units in combat while weakening them, affecting enemy forces as well.

Eidolon weapons can negate shields and spread corruption against enemies.

Eidolon can spread corruption across planets, empowering themselves and shrouding worlds.

Eidolon ships utilize cloaking and detection systems for hit-and-run tactics.

Eidolon can seize control of lesser beings, causing chaos among Vasari ships.