Command a space-faring empire in Sins of a Solar Empire: Rebellion, the new stand-alone expansion that combines 4X depth with real-time strategy gameplay.
User reviews: Very Positive (4,387 reviews) - 94% of the 4,387 user reviews for this game are positive.
Release Date: Jun 12, 2012

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Buy Sins of a Solar Empire®: Rebellion 4-Pack

includes 3 extra copies for your friends.

Packages that include this game

Buy Sins of a Solar Empire: Rebellion Game and Soundtrack Bundle

Includes 2 items: Sins of a Solar Empire®: Rebellion, Sins of a Solar Empire®: Rebellion Soundtrack

Buy Stardock Bundle 2016

Includes 8 items: Galactic Civilizations® III, Sorcerer King™, Sins of a Solar Empire®: Rebellion, Fallen Enchantress: Legendary Heroes, Dead Man's Draw, Galactic Civilizations® II: Ultimate Edition, Galactic Civilizations® I: Ultimate Edition, Demigod


Recommended By Curators

"A space-based RTS with light 4x elements. Rebellion, added enough content to make it worthwhile. Expect more macro than micro."
Read the full review here.


“Bigger and more stable than ever, Sins of a Solar Empire: Rebellion will happily strip-mine your life of its free time.”
86/100 – PC Gamer
“...this is the ultimate version of Sins of a Solar Empire...”
8.5/10 – Strategy Informer
"...Sins embraces its grand strategy like never before."
5/5 – Quarter to Three
“As a standalone expansion, it does very well at balancing between long time Sins fans and newcomers to the series.”
9/10 – RTS Guru

About This Game

The Next Installment to the Award-Winning RTS.
While many were hopeful that diplomacy would finally end the war, differing opinions on what should be done, along with the depleted power of the controlling factions, has led to a splintering of the groups involved.

The loyalist members of the Trader Emergency Coalition adopt a policy of isolation, focusing on enhanced defenses to ride out the rest of the war. Those who rebel against the coalition take on a purely militant view, coming to the opinion that the only way to bring peace is by ultimately crushing all who oppose them - especially xenos.

For the first time in their history, the war creates a schism in the Advent Unity. The loyalists seek to continue their policy of revenge against the Traders, and to assimilate all others to the Unity’s influence. However, others amongst the Advent suspect that a corrupting influence from within has diverted the Unity from its proper destiny.

The divide created in the Vasari Empire is less pronounced, but just as severe to their people. With the Vasari now practically frantic to move on to new space, the loyalist faction abandons cooperation and decides to take the resources they need by any means necessary. Having accepted the need to work together, the rebel faction feels that their best chance for survival is to work with the other races and bring them along to flee the approaching enemy.

Take the battle for galactic supremacy to its ultimate level in Sins of a Solar Empire: Rebellion – a standalone RT4X game that combines the tactics of real-time strategy with the depth of the 4X genre (eXplore, eXpand, eXploit, eXterminate).

Key features:

  • New Factions: Decide whether to play as a Loyalist or Rebel – each unlocks new technologies, ships and play styles for each race.
  • New Titan Class Warships: Mighty titans enter the fray of the war to tip the scales of power. Each faction may field their own unique titan, drawing upon unique strengths and abilities on the battlefield.
  • New and Updated Capital Ships: A new capital ship joins the fleet for each race to offer even more tactical options. Additionally, all existing capital ships have been upgraded to four levels for their abilities, allowing players to focus their ships along specific strengths.
  • New Corvette Class Ships: Small and maneuverable, each faction has developed a new light attack craft to harass enemy forces.
  • Updated Visuals: Updated graphics, particle effects, lighting and shadows, race specific UI and other enhancements make the Sins’ universe look better than ever.
  • New Victory Conditions: Take multiple paths to victory including – Military, Diplomatic, Research, Last Flagship Standing, Last Capital Standing and Occupation.
  • New Audio: More than 60 minutes of original music, countless new sound effects and dozens of new voice overs help bring the drama of battle to new levels of immersion.
  • Tutorials: New and updated tutorials make it easy for both experienced and new players to quickly start building their own solar empire.
  • Plus, a number of optimizations that provide better performance than ever before!

System Requirements

    • OS: Windows 10 / 8 / Windows 7 SP1 / Windows Vista SP2
    • Processor: 3 GHz Intel Pentium 4 Processor or Equivalent
    • Memory: 2 GB Available System Memory
    • Graphics: 256 MB Video Card w/Pixel Shader 3.0 Support (Radeon X1650 / GeForce
      6800* or Better)

    • DirectX®: 9.0c
    • Hard Drive: 5 GB HD space
    • Sound: DirectX 9.0c Compatible Sound Card
    • Other Requirements: Keyboard and Mouse (w/scroll wheel), Broadband Internet connection for Multiplayer
    • * NVidia video chipsets must use driver version 296.10 or higher and mobile cards be set as the primary video chipset for the game.
    • Processor: Intel Core i5/i7 Processor or Equivalent
    • Memory: 4 GB Available System Memory
    • Graphics: 1 GB Video Card w/Pixel Shader 3.0 Support (Radeon X3000 Series / GeForce 8000* Series or Better)
    • Other Requirements:Broadband Internet connection, also to activate this game you must create a Stardock account while launching the game on Steam.
Helpful customer reviews
186 of 196 people (95%) found this review helpful
1 person found this review funny
1,194.5 hrs on record
Posted: May 23
My favorite RTS of all time, if you miss having an RTS that isn't based on hyper speed clicks or over in 5 minutes (starcraft 2 , C&C, warcraft 3, etc.) or based on super hero units with just a couple side units then this is your game.

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42 of 44 people (95%) found this review helpful
358.9 hrs on record
Posted: June 11
Sins of a Solar Empire: Rebellion is one of the most versatile space based RTS games produced; the vanilla game offers three distinct factions and each of those has a sub faction you can choose; loyalist or rebels, each with different tech and construction options. The research trees are fairly comprehensive and cover everything from civilian, military, diplomatic and defence branches each with 30-40 techs in each branch. Therefore there can be different strategies each playthrough to some extent. But the combat is fairly satisfying as well as visually pleasing but the real beauty of Sins is the vast repository of mods available for it on sites like ModDB - Sins of a Galactic Empire (Star Wars), Star Trek Armada 3 are probably two of the most comprehensive you could check out, but there are many more. Therefore as well as the great base game you also have access to whatever particular science fiction genre you want to simulate with the solid game engine. What I would suggest for those familiar with them are programs like large address aware; but more for the mods as opposed to the base game as they tend to crank up the population capacity of ships compared to vanilla. (Due to engine constraints it only utilises the old school 4gb of ram limitation even if you have 16gb; LAA or similar will remedy this problem and allow for late game battles on a massive scale.)
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42 of 48 people (88%) found this review helpful
1 person found this review funny
104.6 hrs on record
Posted: May 24
An exceptional and unique RTS game, more people should be playing this.
Buy and have some space conquering good times.
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25 of 25 people (100%) found this review helpful
1 person found this review funny
21.9 hrs on record
Posted: May 29
I strongly recommend this game. This defines RTS space games and is unique. Every aspect of the game is great for example, the way the diplomacy works and is so realistically done. It has a great soundtrack and is under rated by much. The way the back story ties in with the gameplay is great. This is much better than Sins of a Solar Empire Trinity so i recommend this version specifically. When i play this game i watch the intro every time and i love this game. The mods for this game are incredible too. Best space RTS out there and there is hardly anything i don't like about it at all. GET THE GAME!
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11 of 11 people (100%) found this review helpful
107.4 hrs on record
Posted: May 8
First Review Ever

The Great
  • Breath Taking Visuals
  • The term from the first game "Unrivaled Scale", they aren't joking, I've had games against the AI with friends last as long as 12 hours. (You can save and come back later)
  • Introduction of Subfactions to each species doubles the faction options from 3 to 6.
  • Includes everything from previous Sins games.
  • As a Former Halo Player, I have high extremely high standards to what a soundtrack should be like. Bought the soundtrack, best decision I've ever made TEC Loyalists - Watching The Borders Absolutely beautiful soundtrack. Unique to each faction, and deviations for each subfaction.
  • Surprising amount of depth, you've got your defense to manage, your own fleet for attacking targets, resource generation to worry about, politics and diplomacy are surprisingly in depth if you do some reading about how the game works. UPGRADES FOR EVERYTHING JUST LISTED TO CONSIDER. Yes, you can upgrade your diplomacy, something our current world could bother doing.
  • If the person hosting has the DLC for the game, everyone gets access to it. Forbidden Worlds adds new types of planets, if the host has it, you'll see these planets in game and you can get the research for them, colonize them etc. Also applies to Stellar Phenomena, if the host has it, you'll get stuff like Coronal Mass Ejections screwing with your planets, but then the'll move on else where (maybe to your enemy). Just like Random Crits in TF2: They Give and Take.

The Good
  • You can change victory conditions and in game speed of progression, this game takes awhile to play.
  • Multiple types of victory conditions like "Capital" means you actually have an objective that isn't going to take 10 hours to complete if you don't set them, else it defaults to "Last Man Standing" which means you have to completely clean out your enemies. I recommend playing Capital Victory first time around.
  • If you want to sit down and conquer a galaxy, you can, but it's gonna take awhile (~4 - 6 hours based on opponent)
  • If you want to conquer Multiple Galaxies you can, but it's gonna take awhile. (8+ hours based on opponent)
  • If you want to fight over a single star system with just a handful of planets, you can! (2 - 4 hours based on opponent)
  • Surprisingly simple interface that noobies can use easily, and vets can master with a bit of poking around.

The Bad
  • As said before, depending on your scenario, this game can take AWHILE to play. Depends on your view, but I've gotta throw this in The Bad section because spending half your day conquering a Galaxy is both kickass and tedious at the same time.
  • Besides capital ships, most of the Frigates and Cruisers don't seem to have much strategy behind them except "Build a bunch of everything". More Experianced players will know how to use these, but it's not immediately clear to noobies the difference between each of the frigates. Cruisers doesn't have this apply as much to them, but it's still worth noting.
  • Frustratingly slow start up to each game. You'll be scraping the bottom of the barrel for resources and unlike other games that don't allow you to manage resources, you simply get continous deposits, you'll find yourself never getting a head.
  • Fighting online you will either run into people that don't have enough time to sit down and enjoy a game, not really the game's fault, but it's worth noting. OR they'll be so damn good you don't even stand a chance. I typically play Free For All with optional alliances, so you can build up with other factions that might be on your door step, and plot against those that'll be gunning for you. Alliances with other factions with their own alliances do not carry over to you, so you can absolutely obliterate your ally's allies.

The Ugly
  • Very difficult for noobie players, or even people that know what their doing but haven't played in awhile, to... hate this word, MICROMANAGE everything. You've got so much you're going to have to put your attention on. Planetary defense is probably the biggest issue under the Micromanagement department. The Vasari have a ship that can be told to "Autoplace" mines. Something similar for planetary defense. I wish part of a planet's income was also stored as "defense" budget so you could place defenses around one planet without drawing out of your own resources. Because you're going to be scraping the bottom of the barrel just playing the game as is. Late game when you have all the money you could possibly imagine, it stops being a resource issue and becomes a management issue. Because you've gotta do it all manually. If it applied individually per planet, and each planet had it's own defense budget that built up over time, pulling out a defense would be a lot more feasible for EVERY planet in your domain. I suppose this is to make it so you don't turtle on every planet, and you need to concentrate your resources to defending the key points, like the planets you own that are next to enemy planets, or defending wormholes, the centre star, etc. It feels like you should be able to defend every planet equally simply because the options are there. But if you're fighting the AI, the AI is WAY better at Microing than any human player, and you WILL find defenses on every planet, and that's why this is so frustrating.

On The Fence
  • You'll control the battles by specifically saying which targets to attack, and with what, when to use abilities so on. But this hinges on whether or not you have something that can counter what the enemy is throwing at you. The only solution to fighting a Titan is either a fleet of capital ships or another Titan. Throwing the lesser ships (Frigates and Cruisers) at the larger ships (Capital Ships and Titans) is basically useless. This is entirely for balance issues. If you could build a bunch of crappy frigates and beat a captial ship, there'd by no point to building capital ships.
  • The biggest thing you'll control in a battle is when to retreat. Not bad, not good, this is stuff that's on the fence. There is depth to the battles, but once again this comes down to that word again... MICROMANAGEMENT. You can just Macro (I.E CTRL + A, and then attack) instead of Micro, but the best results come from Micro... once again, not bad, not good, this stuff is on the fence.


It may look like this game has a lot of "bad" being shipped with it. It's really because there's SO MUCH to do, there is SO MUCH DEPTH to the game that this is really the best system that could go along with it. Note that I never offered points of improvement except to defence, because there isn't much that can be done to improve the series. The series has evolved from just "Sins of a Solar Empire" through multiple expansions like... entrenchment, diplomacy, which has added more (and for the better) to the game. The realty is, you are one person, and you can't run an empire with just one person... and that's the biggest strength and flaw to the game. You are one person that can manage an interstellar empire, the devs have done their absolute best work to make sure you can MANAGE your empire, but there is just SO MUCH to do...

And that's why I love this game. Really, you could call "Sins of a Solar Empire" Galactic Empire Management Simulator, one that is rather serious, but a Simulator regardless. Because you'll be managing every aspect you can imagine.

"Sins of a Solar Empire: Rebellion. Real-Time Strategy, Unrivaled Scale"
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