Sins of a Solar Empire®: Rebellion

Real-time space strategy blending empire management with large fleet battles

Ironclad Games Corporation, Stardock Entertainment · Published by Stardock Entertainment · Released Jun 12, 2012

Reviews: Very Positive; 93% of 16K
Recent reviews: Very Positive; 100% of 14 in 30 days
Playing now: 168; right now
Steam Deck: Unsupported
Last update: 1 year ago; Mar 27, 2025

What is Sins of a Solar Empire®: Rebellion?

This real-time 4X strategy game takes place during a galactic war split by rival loyalist and rebel factions. In sandbox matches, you colonize planets, manage resources and diplomacy, research technology, build fleets, and fight for control of space.

For you if...

+you enjoy slow, deliberate 4X strategy played in real time
+you want single-player, co-op, and competitive multiplayer options
+you like choosing factions with different ships and technologies

Not for you if...

−you prefer short, fast-paced strategy matches
−you dislike managing research, economies, and planetary expansion

What players say

93% of 16,351 reviews are positive · 100% of 14 in the last 30 days

Players most often praise the large scale, strategic depth, replayability, and extensive mod scene. Complaints focus on dated graphics and late-game performance, with some players preferring the sequel's technical improvements.

Screenshots and trailer

Sins of a Solar Empire®: Rebellion system requirements

As published by the developer.

Minimum

OS: Windows 10 / 8 / Windows 7 SP1
Processor: 3 GHz Intel Pentium 4 Processor or Equivalent
Graphics: 256 MB Video Card w/Pixel Shader 3.0 Support (Radeon X1650 / GeForce 6800* or Better)
Memory: 2 GB Available System Memory
Storage: 5 GB HD space
Notes: Keyboard and Mouse (w/scroll wheel), Broadband Internet connection for Multiplayer