Sirius Online is a unique, easy to play Space Action Shooter with Multiplayer components and ongoing progression. Join the Ranks of the Terran Reclaim Forces or the Sirius Colonial Council today and fight for your Faction! Explore forgotten battlefields, find Treasures, create an empire with your friends and rule the universe!
User reviews:
Mostly Positive (71 reviews) - 73% of the 71 user reviews for this game are positive.
Release Date: Jun 1, 2015

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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?

“Early Access allows us to spend more time on features and bug fixes while also listening to player feedback and implementing it before the game moved along too far and the product ends up being no fun.”

Approximately how long will this game be in Early Access?

“Our Goal is to have a finished game towards the end of 2017, but we can't promise that it'll be done by that time exactly.”

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

“The Early Access version is currently in Alpha
Sirius Online is currently in Alpha, which means that many bugs are to be expected, core gameplay elements can change, features are missing or might even be removed and so on. Our plan for the full release is:
  • Cross-Platform (Linux, OSX, Windows)
  • Mouse & Keyboard and Full Controller Support
  • Single- and Multiplayer, Dedicated and Listen Servers
  • Modding Support (Ships, Stations, Planets, Sectors, etc)
  • ... (and more)
This list may change during development and is not final or a promise that any of these will make it in.”

What is the current state of the Early Access version?

“Sirius Online is in Alpha, so bugs, glitches and downtime are to be expected.”

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

“This will resemble final Price of the Game”

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

“We actively read reviews, feedback, comments and forum threads and respond to them. If you encounter a bug, have feedback, an idea or a suggestion do tell us and we will happily read and respond to you.”
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Recent updates View all (92)

May 16

Version 1.2 Out Now!

Hey everyone!

Sirius Online version 1.2 is now available! First off, I'd like to introduce myself. I'm Cayne, I'm Irish and I'm new to the Sirius team. I'll be helping with the community and answering questions and opinions you guys might have!

Today is finally the release of version 1.2, a lot of new and exciting things have been added in this update and will hopefully have improved the game immensely. Dex has been working non-stop on trying to make Sirius Online feel fresh and immersive. The community support and input on trello has been an immense help!

Version 1.2 of Sirius Online is now out! Here is a list of everything new and improved in the game, More details on certain additions below:

-The universe has been expanded by 25-fold
-The Crimson Dawn has started to appear
-Mission System
-New Faction and Bounty System
-Texture revamping, eg. asteroids and HSD
-General optimization and performance overhaul
-New mining system
-T.O.A.St has been updated
-UI rework
-Guided character creation and voice over
-Scrap fields have been added to the universe
-Item descriptions
-More trading ships have been added
-New chunk based loading system
-Updated respawn mechanics
-New Music by Brishan Palmer
-Launcher has been added to help with resolution and performance problems

How they work
Missions are a new mechanic in Sirius. You will find missions at space stations around the universe. When you get near to a mission beacon, you will get a prompt on your screen with information on your objective. You will be given the opportunity to accept or decline the mission. Declining the mission will make another available. If you accept you will be given a prompt on where your objective is. New missions will be available at each station.

War. A simple word. Three letters, infinite pain. Ever since the Terrans tried to reclaim us as their "Colony", we've been at war. But something is changing.

Something odd.

After the ACT-Incident we thought they were gone. A sad loss for the Colony Council. A company developing AGI to improve upon our technology. To improve working conditions. To make out lives worth living.

One day, their station exploded. We do not know the cause, we don't even know if there were survivors. All we know is that, from this point on, more and more strange ships appeared from nowhere, killed everything and left.

Only one Message was left.

Prepare for the Crimson Dawn

Sirius Online 1.2 is a culmination of over 6 months of work. I spent countless days and weeks looking at valid criticism and improving the game over that. With "Rise of the Crimson Dawn" I present to you the result of this and hope you will have fun creating a character, playing whatever you like and fending off the Crimson Dawn. Over the course of the next months, Sirius will be expanded on these new Features. More missions, more discoveries, more space. Additionally, with RotCD we decided to go a new path instead of troddling down old ones. Soon you will be able to host your own private servers, play with your friends and enjoy the open world. This is a step that many people mentioned but we didn't feel comfortable about it until we absolutely knew it was possible.

I do hope you are going to enjoy Sirius Online 1.2 as much as I did developing it. Hope to shoot you in space,

8 comments Read more

March 25

Sirius Online 1.2 and its release

Hello everyone!

I'm back from CeBIT 2017, and I've spoken to quite a bunch of people to look where the game is going and make things work. In careful consideration of how far the Patch has come, I decided that I'm not satisfied with the current state of the patch and game.

I will, seeing this, take extra time to work and refine the version 1.2 Update. However, to give you the opportunity to give input to the games progress, there now is a publicly commentable Trello:

I will try to answer as many questions as possible and engage with you to see if you have better Ideas for certain parts of the patch. User Mortakapo from the Community Discord already did major wonders, helping with an all new description system.

Please do understand that I clearly want this build done well and tested beforehand releasing to you, instead of the rushed releases from before.

A new Tutorial and Guided Character Creation is on its way, voiced by RedAngelx3, a video of the new Character Guidance is on YouTube:

While sound still needs proper leveling, and a lot of new sounds are on its way, the character creation is pretty much final.

Another new part I'm working at is ship insurance and a proper killscreen. When you die, you can now choose to respawn in your former ship for 1/3 of its original cost or fold and start in the Jaguar again. This should help combat the loss of motivation when you die in an expensive ship.

Again, you have to thank Mortakapo for the Idea of Adding smaller Variants of the Trading Ships to the game, bumping up the Ship numbers to 10 Traders! He has gained MVP Status on Discord and Ingame after the Patch. Also you might see a scanner carrying his Name running errands.

A new chunk based loading system has been added to the game to keep the engine load light and your game performant. If you had heavy performance issues in the past, hit me up and I'll add you to a special QA version folder to check if it works better!

As a final Note, the Bullpup-Class ship had to be removed from the game. A radon mesh complexion caused it to overuse memory and leak it like mad. Same goes for the engine trails which are replaced soon by static meshes and moving textures to ensure performance. Sure, they might not look as good as those trails, but I can attach those to NPCs as well.

Now here I am, bringing you those News. If you feel you want to do more for the game, join the Trello and help developing or, if you feel really generous, support the Game's development monthly by donating to the monthly patreon:

Every little dollar helps getting more ships, more capacity and more freedom to work on this.

I keep looking forward to 1.2 being completed and enjoy this version myself already way more than the original release. I do hope to see more of you Ingame, on Trello, the Patreon and the community Discord, which you can join here.

3 comments Read more
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“Sirius Online will become memorable for all the right reasons.”

“[...] this is very fun and I cant wait to see where it is going to go.”

“I went into this expecting nothing and I got a great early access Freelancer like MMO.”

About This Game

War. A never ending source of waste. A never ending demand for more lives and resources. The Year is 2436, and humanity, once again, wages war on itself. Nearly a hundred years ago we settled on the Sirius Star System, a rich system with two habitable planets. The first Settlers, now forming the Sirius Colonial Council built this ecology from the ground up. They self-governed and prospered. Five years ago, the Terrans appeared, demanding to return the Control over the System. Failure to do so would result in catastrophic response from the Terran Reclaim Forces.

And so, once again, war erupts.

Take part of the war or live along both sides, trade, fight, think and explore. Be the tip at the iceberg of the upcoming conflict. Control the Economy with your Trading Craft. Find unimaginable riches in the 11 AU wide Sirius Star System. Battle Pirates and even more sinister forces. Create your own Empire among the Stars.

Sirius Online 1.2 - Rise of the Crimson Dawn

It was an accident. Or so they say. One day, the Research Station from the Sociecty of Advanced Technology, a neutral Faction dedicated to research the effects of AGI, vanished. Well... in an explosion. From that day on ships of unknown origin invaded, attacked traders, attacked explorers, abducted people. Always leaving only fragments of data. Fragments that say "...remember the Crimson Dawn". We never gave them much thought. Another Lunatic, fallen to space sickness, painted his ship in odd colors, attempting to kill people until stopped.

It was too late to realize that these were not loners. That these were not unorganized. That these seek to end all human life in this star system. When the first Megacarrier with countless of AI Drones arrived, programmed to speak with the voices of our loved ones, we realized: THEY were the Crimson Dawn. And they have risen. To end us.


  • Explore an 11AU big Star System, with a living economy and hidden riches
  • Take your Side in an Endless war between the SCC and the TRF. Defend your Homeland or take it back for Earth
  • Influence a steadily changing market of supply and demand and work your way up to bigger ships
  • Survive the onslaughts of an unforgiving AI assault destines to kill everything living.
  • Be a part of an ever evolving universe

System Requirements

    • OS: Windows 7 or newer
    • Processor: Intel Dual Core 2.80 Ghz, AMD Dual Core 3.0 Ghz or better
    • Memory: 4 GB RAM
    • Graphics: Direct3D 10 or OpenGL 3 compatible Graphics Card
    • DirectX: Version 10
    • Network: Broadband Internet connection
    • Storage: 2 GB available space
    • Sound Card: Not necessary
    • Additional Notes:
    • OS: Windows 10 release or newer
    • Processor: Intel Dual Core 3.00 Ghz, AMD Quad Core 3.5 Ghz or better
    • Memory: 8 GB RAM
    • Graphics: Direct3D 11 or OpenGL 4 compatible Graphics Card
    • DirectX: Version 11
    • Network: Broadband Internet connection
    • Storage: 4 GB available space
    • Sound Card: HW-Mixing and HW-Buffers supported
    • Additional Notes:
Customer reviews Learn More
Mostly Positive (71 reviews)
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