Sins of a Solar Empire: Rebellion - Forbidden Worlds

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Third party DRM: Steam

This game requires a free Steam account to play.

Customer notes

Requires Sins of a Solar Empire: Rebellion (base game) to use this DLC


The war between the loyalists and the rebels within the TEC, Advent and Vasari continues within the depths of Trader Space. Yet, this sector of the galaxy has far more worlds and far more history than any of the factions are aware. Survival forces each to expand into the unknown, discovering worlds of hazard, wealth, risk, and mystery. Most ominously, the Trader factions have been loathe to expand to these worlds due to the dark myths that surround them.

Key Features:

  • Four new planet types to colonize and exploit (Barren, Ferrus, Greenhouse, Oceanic), each created with beautiful high-res textures.

  • New Planet Specialization System: Dedicate your worlds to either social or industrial output. Devoting your planet to social improvements will increase its population and culture, at the cost of trade income and ship production. Choosing an industrial path will limit your growth and culture, but make your planet a trading and ship building powerhouse.

  • 15 new research subjects allow the races to conquer and expand onto the forbidden worlds. Discover 40 new planet bonuses during your exploration of the galaxy, unlocking the dark past of the Sins’ universe.

  • Unlock five new Steam Achievements and display your mastery of forbidden space!

Customer reviews


Adds some good features

slayer01670 | Oct. 28, 2013 | See all slayer01670's reviews »

This DLC adds a lot more game time to and already fantastic game at a great value.


Good addition to the game

zhack075 | July 22, 2013 | See all zhack075's reviews »

This DLC is great and add many envoyable options to the game. More planets type, the ability to choose between industry or social improvement for each one. Moreover, if you own this DLC, your friend will be able to get those new features as long as you are the game host. This DLC isn't vital yet it remain really good.


A good DLC

Cavalieroscuro | June 24, 2013 | See all Cavalieroscuro's reviews »

Forbidden Worlds brings four new planet types to colonize for Sins of a Solar Empire: Rebellion, with fifteen new research subjects and five new steam achievements. If you want add some new gameplay value to Sins of Solar Empire, give it a try, the price is low and it can be a good addiction for the base game.


Alot more hours!

drafek | June 21, 2013 | See all drafek's reviews »

This dlc does add alot of hours to this game. If you liked the basic game I would recommend picking this one up. You'll get some new features: Four new planets, A new specialization system. 15 new research subjects and for the achievements hunters out there you also will get 5 new achievements to unlock. Worth full price, it's cheap!