Explore and discover a spectacular and ever-changing universe! Paradox Development Studio, makers of the Europa Universalis and Crusader Kings series, and publishers of the best-selling Cities: Skylines, presents Stellaris, advancing the genre of grand strategy to the very edges of the universe.
Recent Reviews:
Mostly Positive (653) - 79% of the 653 user reviews in the last 30 days are positive.
All Reviews:
Mostly Positive (33,408) - 77% of the 33,408 user reviews for this game are positive.
Release Date:
May 9, 2016
Publisher:

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May 24

PDXCON Last Chance for Early Bird!



It is the last chance to get 20% off your ticket with the Early Bird bonus! The discount ends on 31st May so if you already know that you're going to be joining us for PDXCON, now is the time to save on your tickets!

Visit https://pdxcon.paradoxplaza.com

See you in Berlin!
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May 23

Technical improvements



Hi everyone, this week we put Moah in the driver's seat of the Dev Diary. If you don't know who he is, he is the Tech Lead on Stellaris and today he will be talking to you about the free 2.3 "Wolfe" update that will release alongside Ancient Relics, and what it brings to the table in terms of tech!

Stellaris is going 64-bit

People have been clamoring for this for a while now, and various factors have led us to finally do this for this patch. I should temper your expectations though: while many have claimed that this would be a miracle cure for all their issues with Stellaris, the reality is somewhat more tame.

What does it mean?
The one solid benefit is that Stellaris is no longer limited to 4gb of memory, and won’t crash anymore in situations where it was reaching that limit. For people who play on huge galaxies, with many empires, many mods or well into 3000s, this will be a boon.

In terms of performance, though, it doesn’t change much. Without drowning you in technical details, let’s just say that some things go faster because you handle more data at once, some things go slower because you have more data to handle. In the end, our measurements have shown no perceptible difference.

Finally, the last effect of switching to 64 bits is that the game will no longer playable on 32 bits computers or OSes. We don’t think this will affect many people, but there you have it.

What about Performance?

I know that’s everyone’s favourite question, so let’s do our best to talk about it. First, let me dispel some notions floating around in various forums: Stellaris does use multithreading, and we’re always on the lookout for new things to thread. In fact between 2.2.0 and 2.2.7, a huge effort was made to thread jobs and pops, and it’s one of the main drivers of performance improvement between these version.

Pops and jobs are indeed what’s consuming most of our CPU time nowadays. We’ve improved on that by reducing the amount of jobs each pop evaluate. We’ve also found other areas where we were doing too much work, and cut on:
  • Ships calculating their daily regeneration when they’re at full health
  • Off-screen icons being updated
  • Uninhabitable planets doing the same evaluations as populated planets
Why do these seemingly pointless things happen? Well, we generally focus on getting gameplay up and working quickly so that our content designers can iterate quickly, and sometimes things fall through the cracks. Some of these systems are also quite complex and the scale of the new code is not so easily apparent. Sometimes, not limiting the number of targets is good enough because you’re not doing much but then, months later, someone adds more calculations or the number of objects explodes for unrelated reasons, and suddenly you’ve got a performance issue.

Modifiers
One thing that sets Stellaris apart from other PDS title is how much we use (or abuse) modifiers. Everything is a modifier. Modifiers are modified by other modifiers themselves modified by other modifiers, and sometimes by themselves. It’s quite hard to follow, and leads to every value being able to change at any time without your noticing.

“Why don’t you just compute jobs when a new one appears?” has often been asked around these parts. Well, a short answer to that is it’s really hard to know when a new job appears. You can get jobs from any modifier to: country, planet, pops. Each of these can get modifiers from ethics, traditions, perks, events, buildings, jobs, country, planets, pop, technology, etc.

Until now we were trying to calculate modifiers manually, forced to follow the chain in its entirety: when you recompute a country modifier, you then calculate their planets modifiers, and then each planet would recalculate their pops modifiers. Some of our freezes were just that tangled ball of yarn trying to sort itself out.



This is our modifier flow charts. It’s not quite up to date, but gives you an idea of the complexity of the system (Unpolished because it’s a dev tool, and not made for the article).

No More!
For 2.3 “Wolfe” we have switched to a system of modifier nodes, where each node register what node they follow, and is recalculated when used, following the chain itself. We have modifiers that are more up to date, and calculated only when needed. This also reduces the number of pointless recalculations.

This system has shown remarkable promise, and cut the number of “big freezes” happening around the game (notably after loading, for example). It has some issues, but as we continue working with it, it’ll get better and help both with performance and our programmers’ sanity.

So, what’s the verdict?
In our tests, 2.3 “Wolfe” is between 10% and 30% faster than 2.2.7 right now. Hopefully it’ll stay that way until release, but the nature of the beast is that some of these optimizations break things and fixing the issues negate them, so we can’t promise anything.



Measurements provided by sabrenity, using detailed info from the beta build. It’s worth noting the “SHIPS_SERIAL” purple line has since been eliminated.

AI
Another forum favorite, we have done some improvements to the AI. First, with @Glavius ’s permission, we’ve used his job weights to improve general AI job distribution. We’ve also done the usual pass of polish and improvements, and of course taught the AI how to use all our new features.

What else is new?
We’re also getting a new crash reporter that will send your crash report as soon as they happen rather than next time you start the game. We’ve improved our non-steam network stack for connectivity issues, etc.

All right, enough of my yammering. This has turned into a GRRM length novel, and even though there are many more areas we could cover, we’ll just turn this for your perusal.
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Reviews

“Calling Stellaris Europa Universalis in space is probably reductive, but it was the first thing I did in this review not because they are almost exactly alike, but because, when I put away my empires and get on with my day, the stories that have played out in these digital worlds embed themselves in my brain, and I so desperately want to tell people about them. Both games tickle the part of my brain that wants every battle to have some greater context, every move I make to be part of a larger narrative. Stellaris manages to do this without history to lean on, though, and does so with aplomb.”
9/10 – PCGamesN

“Stellaris is easy to comprehend and exciting to execute, which is a perfect combination for a genre notoriously difficult to break into.”
9/10 – Destructoid

“Right now, Stellaris is a very good space-based strategy game, but a few months down the road, it could evolve into a fantastic one”
8.2/10 – Hooked Gamers

Ascension Pack



Your species has mastered the seemingly impossible. Faster than light travel means a new era for your civilization. Brave pioneers set forth from our ancient homeworld into the unknown, while scientists unlock more and more of the vast mysteries of the cosmos... But you are neither the first nor the only, species to climb to the heavens. You must test your military and diplomatic prowess against rival galactic empires.

The Stellaris Ascension Pack includes:


  • Apocalypse: This expansion redefines stellar warfare for all players with a host of new offensive and defensive options. Destroy entire worlds with terrifying new planet-killer weapons, fight against (or alongside) ruthless space pirates, and maybe discover a few non-violent game features as well.
  • Utopia: This expansion adds megastructures and new options for the ultimate advancement of your species.
  • Leviathans Story Pack: A story pack that includes monstrous new creatures and encounters
  • Synthetic Dawn Story Pack: Provides an all-new way for players to establish their empire across the stars, starting the game as a Machine Empire -- a society made up entirely of robots. Unique game features and event chains will allow the machines to expand as a robotic consciousness and create an AI-led network that grows to galactic dominance.
  • Plantoids Species Pack: A species pack that includes fifteen new species portraits, new templates for plantoid civilian and military ships and a cityscape art.
  • Humanoids Species Pack: A species pack that includes ten new Humanoids portraits, new ship models, three new voiceovers sets for VIR and three remixed music tracks.

Galaxy Edition



Stellaris Galaxy Edition includes:

DIGITAL ORIGINAL SOUNDTRACK

The Stellaris soundtrack delivers two and a half hours of original music, including bonus tracks and alternate versions not included in the game. Composed by Andreas Waldetoft with appearances by the Brandenburg State Orchestra and Mia Stegmar, listeners will hear themes meant to evoke discovery and far-reaching exploration through the vast expanse of space through the fusion of orchestral and electronic music. MP3 and lossless FLAC are included.

EXCLUSIVE ALIEN RACE (COSMETIC DLC)

Colonize the unknown and build a glorious spider empire! An exclusive alien race will be added to your game with a unique arachnid design. When your friends ask how you obtained these new spacefaring spiders, be sure to tell them you found the deal on the web.

DIGITAL COLLECTOR'S BOOK

Join the creative team behind Stellaris to learn how the game's aesthetic was designed and realized for Paradox's most visually unique game to date. From concept art all the way through full illustrations and 3D renderings, this exclusive 130-page book includes a collection of game art unavailable anywhere else -- along with insight into the thoughts and research that drove these designs, the problems the team faced along the way, and the ways they finally brought these visuals to life.

STELLARIS INFINITE FRONTIER NOVEL BY STEVEN SAVILE (ebook)

From best-selling author, Steven Savile comes an original novel based on the science-fiction setting of Paradox's Stellaris. When the Commonwealth of Man receives proof that they are not alone in the universe, humanity is divided: should our species seek salvation in potential friends among the stars, or prepare for an inevitable war? What discoveries await the colony ship as they journey into the unknown to find the source of a mysterious alien signal? Download and read on epub, mobi (Kindle) and PDF.

EXCLUSIVE AVATAR AND GALAXY FORUM ICON

Show your love for Stellaris on the Paradox Forums and other social networks.

SIGNED WALLPAPER

Pay your respects to the pioneers who ventured forth into the unknown with this desktop wallpaper signed by the Stellaris development team.

About This Game

Get ready to explore, discover and interact with a multitude of species as you journey among the stars. Forge a galactic empire by sending out science ships to survey and explore, while construction ships build stations around newly discovered planets. Discover buried treasures and galactic wonders as you spin a direction for your society, creating limitations and evolutions for your explorers. Alliances will form and wars will be declared.

Like all our Grand Strategy games, the adventure evolves with time. Because free updates are a part of any active Paradox game, you can continue to grow and expand your empire with new technologies and capabilities. What will you find beyond the stars? Only you can answer that.

DEEP AND VARIED EXPLORATION

Every game begins with a civilization that has just discovered the means to travel between stars and is ready to explore the galaxy. Have your science ships survey and explore anomalies, leading you into a myriad of quests, introducing strange worlds with even stranger stories and discoveries that may completely change your outcome.

STUNNING SPACE VISUALS

With characteristically complex unique planets and celestial bodies, you will enter a whirlwind of spectacles in a highly detailed universe.

INFINITE VARIATION OF SPECIES AND ADVANCED DIPLOMACY

Through customization and procedural generation, you will encounter infinitely varied races. Choose positive or negative traits, specific ideologies, limitations, evolutions or anything you can imagine. Interact with others through the advanced diplomacy system. Diplomacy is key in a proper grand strategy adventure. Adjust your strategy to your situation through negotiation and skill.

INTERSTELLAR WARFARE

An eternal cycle of war, diplomacy, suspicions and alliances await you. Defend or attack with fully customizable war fleets, where adaptation is the key to victory. Choose from an array of complex technologies when designing and customizing your ships with the complex ship designer. You have a multitude of capabilities to choose from to meet the unknown quests that await.

ENORMOUS PROCEDURAL GALAXIES

Grow and expand your empire with thousands of randomly generated planet types, galaxies, quests and monsters lurking in space.

PLAY THE WAY YOU WANT

Customize your Empire! The characters you choose, be it a murderous mushroom society or an engineering reptile race, can be customized with traits like ethics, type of technology, form of preferred space travel, type of habitat, philosophies and more. The direction of the game is based on your choices.

System Requirements

Windows
Mac OS X
SteamOS + Linux
    Minimum:
    • OS: Windows® 7 SP1 64 Bit
    • Processor: Intel® iCore™ i3-530 or AMD® FX-6350
    • Memory: 4 GB RAM
    • Graphics: Nvidia® GeForce™ GTX 460 or AMD® ATI Radeon™ HD 5870 (1GB VRAM), or AMD® Radeon™ RX Vega 11 or Intel® HD Graphics 4600
    • DirectX: Version 9.0c
    • Network: Broadband Internet connection
    • Storage: 10 GB available space
    • Sound Card: Direct X 9.0c- compatible sound card
    • Additional Notes: Controller support: 3-button mouse, keyboard and speakers. Special multiplayer requirements: Internet Connection
    Recommended:
    • OS: Windows® 10 Home 64 Bit
    • Processor: Intel® iCore™ i5-3570K or AMD® Ryzen™ 5 2400G
    • Memory: 4 GB RAM
    • Graphics: Nvidia® GeForce™ GTX 560 Ti (1GB VRAM)
    • DirectX: Version 12
    • Network: Broadband Internet connection
    • Storage: 10 GB available space
    • Sound Card: DirectX 9.0c-compatible sound card
    • Additional Notes: Controller support: 3-button mouse, keyboard and speakers. Special multiplayer requirements: Internet Connection
    Minimum:
    • OS: 10.11 (El Capitan)
    • Processor: Intel® iCore™ i5-4570S
    • Memory: 8 GB RAM
    • Graphics: Nvidia® GeForce™ GT 750M or equivalent AMD® card with 1GB Vram
    • Network: Broadband Internet connection
    • Storage: 10 GB available space
    • Additional Notes: Controller support: 3-button mouse, keyboard and speakers. Special multiplayer requirements: Internet Connection
    Recommended:
    • OS: 10.13 (High Sierra)
    • Processor: Intel® iCore™ i5-4670
    • Memory: 8 GB RAM
    • Graphics: Nvidia® GeForce™ GTX 780M with 4GB Vram
    • Network: Broadband Internet connection
    • Storage: 10 GB available space
    • Additional Notes: Controller support: 3-button mouse, keyboard and speakers. Special multiplayer requirements: Internet Connection
    Minimum:
    • OS: Ubuntu 16.04 x86
    • Processor: Intel® iCore™ i3-530 or AMD® FX-6350
    • Memory: 4 GB RAM
    • Graphics: Nvidia® GeForce™ GTX 460 or AMD® ATI Radeon™ HD 5870 (1GB VRAM), or AMD® Radeon™ RX Vega 11 or Intel® HD Graphics 4600
    • Network: Broadband Internet connection
    • Storage: 12 GB available space
    • Sound Card: Direct X 9.0c- compatible sound card
    • Additional Notes: Controller support: 3-button mouse, keyboard and speakers. Special multiplayer requirements: Internet Connection
    Recommended:
    • OS: Ubuntu 16.04 x64
    • Processor: Intel® iCore™ i5-3570K or AMD® Ryzen™ 5 2400G
    • Memory: 4 GB RAM
    • Graphics: Nvidia® GeForce™ GTX 560 Ti (1GB VRAM)
    • Network: Broadband Internet connection
    • Storage: 12 GB available space
    • Sound Card: Direct X 9.0c- compatible sound card
    • Additional Notes: Controller support: 3-button mouse, keyboard and speakers. Special multiplayer requirements: Internet Connection

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