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Stellaris dev says the galactic 4X game's enemy AI needs to be more challenging

A little over two weeks on from the launch of Stellaris 4.0 and the Biogenesis DLC, things are starting to stabilize. Developer Paradox has just launched Stellaris patch 4.0.13, the latest in a long string of updates delivering more performance improvements, balance tweaks, and bug fixes for the space 4X game. As the studio looks ahead to the Shadows of the Shroud expansion, game director Stephen 'Eladrin' Muray ponders how success is measured in Stellaris, and ways that its enemy AI can provide a more rewarding challenge.


Read the rest of the story...


RELATED LINKS:

The best origin in Stellaris Biogenesis has inspired Paradox to get weird

Stellaris 4.0 "needs to get better," but its director is happy with the launch

Before Europa Universalis 5, get Paradox's finest grand strategy games cheap

Stellaris Dev Diary #385 - AI Benchmarks

written by Eladrin

Hi everyone!

The 4.0.13 update released today with the following changes:

[expand]
[h2]Stellaris 4.0.13 Patch[/h2]
Improvements
  • Behemoth Fury is now available to Wilderness Empires.
  • Improved tooltips for the following civics:
  • Functional Architecture/Constructobot
  • Environmentalist
  • Astro-mining Drones
  • Maintenance Protocols
  • Ascensionists
  • Augmentation Bazaars
  • Brand Loyalty
  • Death Cults
  • Dimensional Worship
  • Balance
  • Mutagenic Habitability now counts all planet types as ideal for upgrading Gaiaseeders
  • Dramatically increased the draw chance for the Mineral Purification, Global Energy Management and Food Processing technologies
  • Rebalanced the Pleasure Seeker civics to transform Civilians into Hedonists
  • Logistic Drones are now Complex Drones not Menial Drones


Bugfix
  • Fixed invaded pre-ftls not becoming biotrophies
  • People once more die when they are put in the Lathe
  • Bio-Swarmer missiles can now be used by all biological ships with medium weapon slots (including defensive platforms)
  • Pops that are being pampered will now be forcibly switched to the correct living standard
  • Replacing a district specialisation no longer destroys CyberCreed buildings that should be kept
  • Corrected a tooltip bug where a planet would display itself as a possible migration target.
  • Fixed capitalisation for resources in trade policies
  • Updated assorted modifiers that still referred to Clerks
  • A Trade deficit now causes Job Efficiency and Empire Size issues
  • Fixed the tooltip for the Polymelic trait
  • Armies now protect 200 pops from raiding, not 2
  • Blocked the Federation Code technology for some empires, for example homicidals. To draw the tech, the empire is also required to be in contact with someone they can form a federation with.
  • Blocked the Development focus task Form a Federation for some empires, for example homicidals
  • Added swaps for some empires, for example homicidals, for the Development focus rewards Federation Code, Xeno Diplomacy, and Xeno Relations
  • Updated the Colony view tab mentioned in the hint of the focus task Enact a Planetary Decision to say Management
  • CyberCreed pops with Ritualistic Implants can now colonise planets
  • Fixed Recycled and Luxurious traits not applying to Roboticists
  • Catalytic Processing Civic now lists correct information regarding job swap
  • Cost for repairing orbital rings when you use bioships is now correctly calculated
  • Gale Speed trait gained from Defeat no longer causes errors
  • Fixed scope for LeaderShipSurvivalReason
  • Fixed scope bug for ruler in leader_election_weight
  • Fixed Worker Coop gaining Elite strata jobs in too many places and tidied up the civic tooltip
  • Updated tooltip for Warrior Culture civic
  • Added a pre-list colon to the Feudal Society civic's tooltip
  • The everychanging stone can no longer cause artisans to have negative mineral upkeep
  • Gave the Neural Chorus advanced authority the pop growth speed modifier that had accidentally been assigned to Memory Aggregator
  • The Planetary Supercomputer no longer has an empire cap of 1
  • The Research Institute/Planetary Supercomputer no longer give scientist capacity
  • Added dashes to Traits tooltips and list items
  • Fixed trigger logic for criminal syndicates and federations
  • Fixed Offspring Bioships not being visible in game
  • Fixed Offspring Bioships not being labelled as non-offspring ships in the ship designer
  • The Machine Uprising will no longer spawn 100 machine pops for every 1 missing housing. However the pop-rework seems to have handled 6 million machine pops okay.
  • Stopped removing occupation armies for bombarded and invaded planets on savegame load
  • Repairing ruined buildings in zones is now always possible.


Performance
  • Flattened pop job modifier node into planet one
  • Made clearing modifiers a fire and forget job


Stability
  • Fixed a possible OOS when a player leaves the game.
  • Fix CTD when generating a Cosmic Storm mesh.
  • Fixed a random freeze when loading save with stations containing multiple defence platforms.

[/expand]
We expect the 4.0.14 release will be next week (probably on Tuesday), and is expected to include some fixes to a few infinite loops and some select balance changes (like splitting up Enforcers and Telepaths again). It will be a short work week here in Sweden, so it’s likely to be the only update of the week.

As I mentioned last week, with multiplayer stability largely handled, AI is one of our next focuses. Today I want to talk about AI benchmarks, and have a discussion with you about how we should measure “success”.

[h2]What Makes a Good AI?[/h2]

The AI in Stellaris has always been designed as very reactive, and AI personality has a massive impact on their behavior. Our goal is for our AI empires to feel like actors in the galactic play - acting in a manner consistent with their Origins, Authorities, Civics, and Ethics rather than always picking the “meta” play.

They do still need to put up a bit of a challenge though, especially at higher difficulties.

The first economic goal we make for our AI is “please don’t collapse in an economic death spiral”, and it’s actually far better at that in 4.0 than it was in 3.x. The current AI does NOT meet the second “provide an adequate challenge” goal though.

One of the fundamental tools we have for our AIs are resource targets in their economic plans. They’ll strive to reach those targets, and many of these are set as “scaling” - if they meet the target, they’ll raise the target the next month. This attempts to ensure that they’ll keep thirsting for ever larger research and alloy numbers (or food if they use bioships!) as is appropriate. This is one of the tools we also use to make them exhibit their ethics - Materialists scale their Research targets faster than other empires, so they’ll inherently be more likely to build more Research specializations, while Spiritualists are more likely to have a lot of Unity specializations.

Ironically, improving AI tends to consume any benefits we carved out through performance improvements. The stronger the AI, the more stuff they have - fleets, colonies, and so on.

[h2]Benchmarking[/h2]

One way to decide whether or not the AI is performing up to expectations is through benchmarking - what kind of fleet power, alloy generation, and research generation should they have by 2230, 2250, 2300, and so on? Around what year should they hit 10k fleet power?

Then there come questions around whether the benchmarks should differ based on personality type. Should it be different if they’re Democratic Crusaders vs. Peaceful Traders? Or does differentiating them there make the friendlier empires too weak?

I’ve got my own set of benchmarks that come from running 3.14 and from the multiplayer community, and in general, I’m okay with Grand Admiral being significantly harder than it was in 3.14. but I’m interested to hear what you all strive for.

How much research and alloy production do you try to have 10 years, 30 years, 100 years, and when the end-game crisis comes calling? (Include your preferred difficulty settings and galaxy sizes as well if you could, as well as if you change any other important settings like tech costs.)

[h2]What’s Next?[/h2]

We’re going to continue with 4.0 post release support.

Since the next two weeks are both short weeks in Sweden, our next Stellaris Dev Diary will be June 12th. (You’ll be hearing from me in patch notes in the meantime though.)

4.0.11 Patch Released (checksum 3f89)

by PDX-Loke

Hello everyone,

Our latest and greatest patch for Stellaris has now been deployed. 4.0.11 is available for download via Steam.

This patch contains plenty of bugfixes, balancing tweaks, performance optimizations, as well as resolutions to the most common out of sync issues. There are a few more of those still under investigation but this patch should let you have a more stable multiplayer experience.

Please find the patch notes below.
[expand]
[h3]Stellaris 4.0.11 Patch[/h3]

Bugfix
  • Fix Faction resource output being exponential
  • Evosymbionts now have a description
  • Fixed that eating a baby didn't give you any DNA or genetic insights
  • Fixed the first tier of the physics lab requiring access to volatile motes to research
  • A stray K should no longer haunt players that foolishly opened a certain window
  • Explore a Wormhole' Focus Card is now 'Traverse a Wormhole', clarifying that you have to travel through it
  • Fixed typo in "Colony View" Databank entry
  • Added localization string for +3 Unity planetary feature
  • Federation Cohesion tooltip now mentions Officials instead of Envoys
  • Death Priests now correctly get +3 base unity output while a sacrifice edict is in effect
  • Hard Reset event "Our [empire] Legacy" event now works as intended
  • Observers can open the build queue of the empire they're observing.
  • Fixed a case in which virtual ascended empires could get unworkable fallen empire jobs on habitats
  • Fixed adSul not having any resource districts after terraforming it
  • Species with Mutagenic Habitability now shouldn’t lose it when they bloom from Gaia-Seeders
  • Xenophobic Pharma State Empires will no longer start with 2 Medical Centers leading to both being destroyed at game start.
  • Broken Shackle Angler Empires will no longer spawn with a farming district in their city slot.
  • Amoeboid Pacification Empire modifier now displays effects
  • Enslaves species located in Synaptic Lathe will no longer switch back and forward between neural chips jobs and slave repurposing job.
  • Fixed the Auto-Curating Vault (and equivalents) not having an additional bonus on ringworlds
  • The Organic Paradise building can no longer be built directly
  • Nexus districts no longer mention Logistic Drones when they shouldn't
  • Fixed machine empires starting with the wrong number of pops
  • Neglected Bio-Trophies now show as unemployed
  • Fixed tooltips for Angler civics
  • Fixed tooltips for all Astrometeorology civics
  • Fixed issues with the Astrometeology building for gestalts
  • Fixed the Beastmaster civic tooltip
  • Updated nested tooltips for Civil Education
  • Fixed stability from Byzantine Bureaucracy not applying
  • Fixed Wild Swarm mentioning ships when combined with Cordyceptic Drones
  • Streamlined the tooltip for Catalytic Processing
  • Improved the Dark Consortium tooltip
  • Fix starting leaders often missing a background job.
  • Fixed translation error in Korean text about lack of modifier.
  • Added missing concept tooltip for District Specializations
  • Fix the ship designer autogenerate checkbox sometimes not working correctly
  • Weather Forecasting Mode is now listed correctly in Storm Chasers description
  • Added Augmentor job description in english
  • Fix the amount of pops affected by the voidworms bombardment
  • Fix incorrect Megastructures build conditions tooltip
  • The Synaptic Lathe should once again purge pops. (This will not retroactively affect existing saves.)
  • Fixed a bug that prevented upgrading building that have planet limit set on them.
  • Balance
  • Increased the number of Bio-Trophy jobs provided by most sources
  • Added the Creativity Exhibition Vault as an equivalent for the Auto-Curating Vault for Rogue Servitors
  • Machine Intelligences no longer give a growth penalty to organic pops
  • District specialisations that add unity jobs no longer give coordinator jobs for Rogue Servitors instead they give Bio-Trophy jobs
  • Bio-Trophies now increase the Job Efficiency for Complex Drones instead of their resource output
  • Rogue Servitors no longer start with an additional 2000 drones
  • Rogue Servitors now start with 2000 Bio-Trophies instead of 500
  • Rogue Servitors now have access to the Sanctuary Enclave district specialisation, granting a large number of bio-trophy jobs
UI
  • Notification Icons shan't be blurry no more
  • Added more visible habitability information in the planet view.
Performance
  • Reduced a number of unnecessary re-calculations of ship designs
  • Sub-species with identical traits and rights will periodically merge together to reduce the total number of species and pop groups.
Stability
  • OOS RANDOM_COUNT fix (caused by dependency between planet and galactic object ftl inhibitors)
  • Fix common OOS related to ship behavior resulting in RANDOM_COUNT and NUM_MISSILE as well as many other OOS codes
  • Fixed RANDOM_COUNT OOS caused by pop group assembly tooltip.
  • Fix CTD when calculating Branch office income
Modding
  • Added new effect: set_planet_purge_type. Using it on synthetic lathe to have pops purge
  • Replaced base_cap_amount with planet_limit for buildings

[/expand]

Thank you for your continued feedback! The team is still going strong so please keep reporting any and all encountered issues.

See you again soon.

The best origin in Stellaris Biogenesis has inspired Paradox to get weird

Stellaris Biogenesis has largely been a success, even if Steam ratings tell a different story. The new expansion for Paradox's space strategy game has been marked down because of its rocky launch and the game's troubled 4.0 update, yet the reviews are almost all filled with praise for the DLC itself. Creative, flavorful, and offering some of the most unique ways to chart your journey through the 4X game, it's an undeniably promising new chapter. Speaking exclusively to PCGamesN, game director Stephen 'Eladrin' Muray reveals his personal favorite addition, and talks about the team's plans for future expansions.


Read the rest of the story...


RELATED LINKS:

Stellaris 4.0 "needs to get better," but its director is happy with the launch

Before Europa Universalis 5, get Paradox's finest grand strategy games cheap

Paradox apologizes for "disappointing" Stellaris 4.0 update, commits to fixes

4.0.10 Patch Released (checksum 10cb)



Greetings everyone,

Today we bring you a fresh patch, fixing various issues in BioGenesis and 4.0.
4.0.10 should now be available for download via Steam, with GOG and MS Store to follow.

Please find the patch notes below.

[h3]Stellaris 4.0.10 Patch[/h3]​
Improvements
  • Bloomed Biomass is now prioritized if unqueueing a Building that costs Biomass on Gaia worlds.
  • Cleaned up Terraforming options for Wilderness empires if they did not start with that planet type to avoid the painful game loop of colonizing a terrible world so that you could then pay in energy to improve it.
  • Candidates that are not the primary species of an empire now have a reduced chance of being elected in Non-Xenophilic, and under the proper circumstances, non-Selective Kinship Empires.
Bugfix
  • Augmentation Bazaars civic no longer claims to increase trade per cybernetic trait
  • Wilderness Empires will no longer be offered Gene Seed Purification
  • The final tier of the Gaia Seeder building will no longer be destroyed in Wilderness Empires
  • Wilderness Biomass is now more likely to gain the Bloomed trait
  • Democratic Transference will no longer be granting hundred times more efficiency than expected.
  • Biological Ship empires should now be able to grow Fledgling Dragons when playing the Here Be Dragons origin.
  • Fixed the Expand Planet Decision for Wilderness refunding the Biomass spent
  • Updated the "Weak" trait tooltip
  • Fixed outdated Overtuned Traits tooltips
  • Restored icons to the "Win a War" Focus Card
  • Total War Empires can now complete the "Win a War" Focus Card
  • Terravores will no longer be give the "Terraform 3 Worlds" Focus Task
  • Delicious and Felsic species traits now give +100% job efficiency to livestock jobs
  • Secrets of Inetian Traders' vanilla modifier now reduces trade fees.
  • Fixed the Mutagenic Spas descriptions because they weren't displaying the correct job swap.
  • Fixed Clear Design for space fauna duplicating components and not clearing anything.
  • Fix some incorrect text in civics tooltips during empire creation
  • Slaves and purged pop groups no longer listed as being demoted
  • Bio-trophies and some other jobs cannot be automated anymore, as funny as it was for the Rogue Servitors to be so sad at the empty domes and make animatronic trophies to care for.
  • Fix some modifiers missing from job production tooltips.
  • Fix to Tiyanki Graveyard animation
  • Xenophobes are once again prevented from giving Full Citizenship and Military Service to Xenos
  • Adjustments to Xeno Mediator to be correct for 4.0
  • You can no longer build rural support district specialisations in urban districts if the planet type does not have the district type it would support
  • AI will stop losing colonies due to resettlement
  • AI will stop resettling from and into planets being colonized
Balance
  • Augmentation Bazaars grant access to Augmentation Merchants which combine the benefits of Merchants and Executives in one
  • Hyperlane Breach Points and Hyperspace Slipstreams technologies now also increase the number of pops that can move each month due to Automatic Resettlement by +25%
  • Doubled the effect Transit Hubs have on Automatic Resettlement to +200%.
UI
  • Significantly improved Pop Job's production tooltip and details panel
  • Buildings in the Planet UI do not escape their frames anymore.
  • Updated the size of the Districts backgrounds, so their sizes and their padding are evenly distributed.
  • Updated the District Cap Background size and also the district slots padding.
  • Added more padding and even margins for the Planet UI.
  • Updated the look of Planet Production and Planet Deficit section of the Planet UI.
  • When opening the leaders view, the Available Positions window will now always start closed.
Performance
  • Reduced the amount of pop groups by adding a mechanic for merging smaller similar ones.
  • Calculate the planet upkeep/produce/profit during the monthly tick and use the cached amount for all the calculations
  • Prevented monthly job assignment from triggering again the next day
  • Reduced memory allocations between monthly job distributions
  • Tweaked the grain size for planetary threaded updates
Stability
  • Fix common OOS related to wrongly recalculated planet profit (again, for real this time)
  • Some changes that are an attempt to fix a RANDOM_COUNT OOS that we cannot reliably reproduce internally.
  • Fixed crash when opening leader level up message if there is no trait to pick.
  • Fix CTDs related to Behemoth
  • Fixed OOS due to ship designer using synchronized random
Modding
  • Add can_be_automated token for jobs that cannot be automated


We shall carry on and will be back with more at a later date. Until then!