Thousands of alien machines are descending on Earth's first interstellar colony in this massive-scale new tower defense game from the publisher of Ashes of the Singularity and Sins of a Solar Empire: Rebellion.
All Reviews:
Mostly Positive (49) - 73% of the 49 user reviews for this game are positive.
Release Date:
Apr 16, 2019

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Early Access Game

Get instant access and start playing; get involved with this game as it develops.

Note: This Early Access game is not complete and may or may not change further. If you are not excited to play this game in its current state, then you should wait to see if the game progresses further in development. Learn more

What the developers have to say:

Why Early Access?

“Feedback and testing are critical for game development. We are constantly iterating and trying out new ideas and we need players to help us through that process in order to deliver the best game possible at release.”

Approximately how long will this game be in Early Access?

“Siege of Centauri is well on its way to completion, but it still needs time for polish and iteration. We want to be able to have the opportunity to weigh player feedback and make changes based on that as well. Our goal is to release the game in the Summer of 2019.”

How is the full version planned to differ from the Early Access version?

“Right now, we only have a select number of missions and maps available. By the time the game releases, we will have full campaigns and a large set of maps, complete with voice acting, graphics, and other additional game polish. We will introduce new mechanics, bug fixes, and further iteration on the game throughout the Early Access period.”

What is the current state of the Early Access version?

“Currently, players have access to the campaign mode, with survival mode coming later. As development continues, we will add more missions into the campaigns, new terrain types, and new enemy types. Leaderboards and rankings are also on the way, along with additional polish through bug fixes and iteration, the addition of voice acting and cinematics, and modding tools.”

Will the game be priced differently during and after Early Access?

“After Early Access, the price may gradually raise as more features and content are added in. We have not finalized the price for release.”

How are you planning on involving the Community in your development process?

“Community is so important to us, which is why we choose to offer Early Access. We need your feedback on balance, wishlists for future content, and bug reports. Most of all, we want you to tell us what parts of the game you’re having fun with - and also, what you’re not. We actively read the forums on Steam.”
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Recent updates View all (7)

May 22

Siege of Centauri: Beta Update 6

Features
  • New Mission: Gaol. Gaol is a huge region with low paths building up to the Colony at the top. And it features a new opponent, the Hooded Turbine, a ship that combines a high speed with strong shields. They will try to rush through your defenses to get at your Colony.
  • Added upgrades to the Scavenger Modules. They are cheap and increased the range of the building.
  • Added a bunch of new music and sfx.



Balance
  • Milton- reduced the cooldown slightly.
  • Reinforcements- increased the cooldown slightly.
  • Hatchlings- Increased hit points (they weren't much of a challenge after the Clutch of eggs was destroyed).
  • Masochists- Slowed them down slightly.
  • Added a new objective to Sord, to generate 500 metal from Scavenger Modules.
  • Fission Reactors can't be upgraded until the Colony is upgraded.
  • Modified the intro camera for Circosta so that it starts focused on the Metal Refinery that the dialog is discussing.


Fixes
  • Fixed an issue with Masochist targeting.
  • Fixed an issue where the Metal Refinery lost its depth when damaged.
  • Fixed the Temporal Shift ability.
  • Fixed overlapping text on the mission launch screen.
  • Fixed an issue where some objectives weren't awarding score correctly.
  • Fixed a UI issue with 4:3 ratio displays.


UI
  • Increased the size of Sparrows slightly.
  • Objective Complete display no longer overlaps with the dialog text.
  • Tower names no longer overflow in the selection window.
  • Added category icons to the archive.
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May 16

Siege of Centauri: Early Access Version 5 Now Available

Thank you all for your feedback. We are listening and have made some significant changes to the game based on it. Most notably we redid the entire game progression to be smoother. That requires redoing all the maps so we couldn't release new missions as they wouldn't fit in with the old system.

The big change is that we will no longer tie unlocks to score. Instead new towers and orbital abilities will be unlocked by completing missions. This offers us a few advantages.



Features

  • New Progression System- Tower/orbital unlocks are no longer tied to score. Instead they are unlocked by completing missions. Because of this unlocked tower/orbital popups will no longer interrupt game play and we can have more score variety (it was difficult to balance people unlocking towers in time if someone got a lot less points than a another player because they were playing on a lower difficulty level).
  • Chronoshift- This replaces the pause mechanic. Pausing now puts the game into "bullet-time" or "matrix" mode where the player can slow down the action to make decisions. But this is a limited resource to keep the pressure on game play. On easier difficult levels we are generous with the time given, but on higher difficulty levels it will be tougher.
  • Outposts- Some maps have Outposts. These are buildings with no military value, but they give a big score bonus if they survive the mission. It's up to you if you want to spend resources defending them or not.
  • New Mission: Dule. A large map with multiple choke points and a defensible colony, and hard to defend outposts.
  • New Mission: Ascent. A mountain with the colony on top and winding paths going higher and higher until they reach the top.

Balance
  • There are now 9 difficulty levels.
    • Trainee- -90% Score, +60% tower damages, +100 metal,/n Infinite Chronoshift
    • Beginner- -75% Score, +50% tower damage, +50 metal,/n Chronoshift depletes 75% slower
    • Novice- -50% Score, +40% tower damage,/n Chronoshift depletes 50% slower
    • Easy- -25% Score, +20% tower damage
    • Normal- No Score Modifier, Normal hit points
    • Challenging- +25% Score, +30% enemy hit points
    • Hard- +50% Score, +60% enemy hit points,/n Chronoshift replenishes 50% slower
    • Unyielding- +75% Score, +100% enemy hit points,/n Chronoshift replenishes 75% slower
    • Nightmare- +100% Score, +150% enemy hit points,/n Chronoshift never replenishes
  • Decoy no longer lasts forever.
  • Increased the cost of drone bays.
  • Rail Gun delay between firing increased slightly.

UI
  • Minimaps give an audio and visual queue whenever a new wave starts, telling you exactly where they are coming from.
  • Buildings with hit points (metal refineries, fission reactors, etc) now show their hit points when selected.
  • Towers and orbitals now have a highlight ring if they are available.
  • UI Animates when a mission starts.
  • New splash screens images, new campaign screen image.
  • Replaced all the unit and tower selection images.
  • New/updated sfx.

Fixes
  • Fixed an issue where a tower can stick to a lower tier unit when there is a better target in range.
  • Fixed an issue where Scarabs couldn't attack.
  • Fixed an issue where Punishers smoked when undamaged instead of when they were damaged.


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About This Game

Siege of Centauri puts you in command of the defense of Earth's first interstellar colony. Thousands of alien machines are descending on the helpless colony and only you, with your arsenal of fast-deployed orbital defense structures (FODS) can stop them.

The enemy comes in all shapes and sizes, challenging you to counter them with the right defense in the right place. Siege of Centauri combines the best elements of classic tower defense games with the strategic depth Stardock has delivered in past titles, including Sins of a Solar Empire: Rebellion and Ashes of the Singularity.

Battle across the surface of an alien world through a series of story-driven campaigns or fight for survival in a doomed region to see how your skills match up against thousands of other players across the world.

System Requirements

    Minimum:
    • Requires a 64-bit processor and operating system
    • OS: 64-bit Windows 10 / 8.1 / 7
    • Processor: Quad-core Intel / AMD Processor
    • Memory: 6 GB RAM
    • Graphics: 2 GB GDDR5 NVidia GeForce 660 / AMD R7 360 or better
    • DirectX: Version 11
    • Storage: 10 GB available space
    • Sound Card: DirectX Compatible Sound Card
    • Additional Notes: 1920x1080 Display Resolution or Higher; additional disk space will be required during Early Access
    Recommended:
    • Requires a 64-bit processor and operating system
    • OS: 64-bit Windows 10 / 8.1 / 7
    • Processor: Intel Core i5 or Equivalent
    • Memory: 8 GB RAM
    • Graphics: 4 GB GDDR5 NVidia GTX 970 / AMD R9 390 or better
    • DirectX: Version 11
    • Storage: 10 GB available space
    • Sound Card: DirectX Compatible Sound Card
    • Additional Notes: 1920x1080 Display Resolution or Higher

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