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Stellaris Dev Diary #100 - Titans and Planet Destroyers

Hello everyone and welcome to this very special triple digit Stellaris development diary! Today's dev diary marks the start of talking about the Apocalypse Expansion that will be accompanying the 2.0 'Cherryh' update. We still can't give you an ETA on the release of either, and there's a fair bit to cover in the expansion before then, but we're getting closer. As this is the start of talking about paid features, I just want to take a moment to reiterate that everything talked about in dev diaries 91-99 (with the exception of Dev Diary #95 which was about Humanoids) were about the Cherryh update and all features and changes mentioned in these previous dev diaries are part of the free update, NOT the expansion. Everything mentioned in this dev diary will be part of the paid Apocalypse expansion, however. Please note that some of the screenshots in this dev diary feature placeholder art and icons.


Planet Destroyers (Apocalypse Feature)
As mentioned all the way back in Dev Diary #50 and again in Dev Diary #69, Planet Destroyers have been on our wish list for quite some time, but wasn't something we could make work with restrictive nature of the old warscore system. Now that this is no longer a concern thanks to the new war system we talked about in Dev Diary #93, we finally have our chance to implement this beloved sci-fi staple.

Planet Destroyers come in the form of a new ship class called a Colossus. Though nominally a military ship, the Colossus has no actual fleet combat capability, but is instead a single massive weapon solely dedicated to the purpose of laying waste to enemy planets. To build a Colossus, you must first already know how to build Titans (more on those below) and then take the Colossus Project Ascension Perk, which unlocks a special project to research and design your first Colossus. Each Colossus mounts a single World Devastator-class weapon, and during the course of the project you will be given the option to choose which such weapon you want to focus on, with five potential options to choose from:
  • World Cracker: Shatters a planet, leaving behind a broken debris field that can be mined for resources. Available to non-Pacifists.
  • Global Pacifier: Encases the planet in an impenetrable shield, permanently cutting it off from the rest of the galaxy. A research station can be built to study the planet afterwards.
  • Neutron Sweep: Destroys most higher forms of life on the planet but leaves the infrastructure intact for colonization. Available to non-Spiritualist, non-Pacifist empires.
  • God Ray: Converts all organic Pops on the planet to spiritualist and destroys all machine/synthetic pops, as well as massively increasing spiritualist ethics attraction on the planet for a time. Available to Spiritualist empires.
  • Nanobot Dispersal: Assimilates all Pops on the planet, causing it to defect to your empire with its newly cyborgized population. Only available to Driven Assimilators (and thus requires Synthetic Dawn as well).
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(Weapon icons are placeholders)

Additional types of World Devastator weapons that are potentially available to your empire can be researched as rare technologies after finishing the Colossus project. Once the project is complete, you will be able to build a Colossus at any Starbase with a shipyard where you have the Colossus Assembly Yards building built. Once built, the Colossus functions similar to a civilian ship, in that it is own fleet, and cannot be merged with other fleets. Each empire can only have a single Colossus active at the same time, but can build a new one if their active one is destroyed.

Colossi have no conventional armaments (though we are discussing a few medium/PD turrets to them), and their real purpose is to target enemy planets. When a Colossus is ordered to target a planet, it will travel straight towards it, ignoring enemy ships entirely even if they fire on it. The Colossus will travel to the planet, take up position and begin charging its weapon. The weapon takes quite some time to charge, giving enemy fleets a chance to try and destroy the Colossus to stop it from firing (though Colossi naturally can take a great deal of punishment, they are not invincible). Once the weapons is fully charged, it will fire, executing its effects (as described above) on the hapless planet. The Colossus is then free to continue on to the next planet if you so wish. Most Colossi weapons can only target planets owned by empires you are at war with, though some of them can target primitive worlds and the World Cracker can be used on uncolonized rock-type worlds (but will not always generate a mineral deposit in that case).
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(Animations & interface are partly WIP)

The system for creating World Devastator weapons is fully scriptable, and modders will be able to create their own planet-destroying/changing effects.

Titans (Apocalypse Feature)
Titans are another new ship class available in the Apocalypse expansion, but unlike the Colossus they are much more like conventional warships. Titans are researched through a regular tier 5 technology, and can be built in any Starbase with a shipyard and the Titan Assembly Yards building. Titans are massive flagships that come equipped with an array of heavy long-ranged weaponry and layer upon layer of shields and armor. Their front section has a single Titanic-size slot that can fit weapons even stronger than XL weapons, such as the immensely powerful Perdition Beam that can fire across a whole system and potentially destroy a battleship in a single shot. Titans also have an aura slot that can fit a single offensive or defensive aura that can buff friendly ships in the same fleet or debuff nearby enemy ships. Titans are intended to be the flagships of your fleets, and as such are limited in number: You can always field at least one Titan, plus an additional amount dependent on your overall naval capacity.
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Ion Cannons (Apocalypse Feature)
Finally, there is one last Apocalype feature to talk about for today: Ion Cannons. Ion Cannons are stations that can be built as part of the defense platform fleet of a Starbase. Each Ion Cannon is essentially a single massive gun emplacement that mounts a single Titanic weapon, allowing the Starbase to engage enemy fleets at massive ranges and greatly improving the Starbase's ability to deal with enemy Battleships and Titans.
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That's all for today! Next week we'll continue talking about Cherryh and Apocalypse expansion, on the topic of Marauders, Pirates and the Great Khan.
 
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my concern with planet destroyers are only 3.

1-> Effect of a destroyed planet on any living planets on that system, specially if the planet destroyed was a big ones.

if people want to kill the whole galaxy its fine, but i rather have consequences for people that start to break broken planets. At least something to fear.

Otherwise it will become too automatic, and the consequence for that is the tech will become unfun.


2-> Option to disable that feature. (Not everyone wants to worry about that during its game).



3-> Time. Balancing the time will be quite tricky. If on doubt add more time, i rather complain the colossus is taking too long instead of complaining its killing my planets before i can react.



Outside of that. Nice touch with multiple world destroyers, and looking foward to test the feature.
 
Not every type of empire gets its own planet destroyer, though we may very well add more later. What weapon would you suggest for Hive Minds (besides the basic ones they already have access to)?

Perhaps a Seedship? By spreading a spore-based virus through the entire population it causes drones of your own civilization to grow at a rapid rate, consuming the native population as they do so (and, when species-appropriate, using them as hosts). When finished, every pop on the planet has been replaced with one of your own.

Similar to assimilation, except instead of assimilated aliens you just have your own population on the planet. (So, basically, xenomorphs instead of Borg.)
 
Not every type of empire gets its own planet destroyer, though we may very well add more later. What weapon would you suggest for Hive Minds (besides the basic ones they already have access to)?

A sort of massive neural desinhibitor ? Convert all pop to hive-minded drones... Or a neural nerve-stapling gun that convert every pop to livestock and let the planet produce enormous amount of food ?
 
We should have the ability to send a world back to primitive age, a weapon that ruins the planet and turn it into a wasteland so we could study worlds like the Fallout's world.
 
While I salute your decision to finally introduce titans into the game, there is one more thing to be done. There must be a ship that would fit "between" battleships and titans, - dreadnought (or a mothership, as a fighter/bomber alternative). The reason why the game needs it is because late in the game there are too many battleships (~ 100-150) and it feels like quantity does not transform into quality at this stage. If we had a ship that could replace 5-6 battleships alone, it would be good for the late game in particular because it would lessen the lag and make late game battles look great, since watching massive dreadnoughts/motherships tearing each other apart is somewhat more satisfying than observing # 42 bs dying and being instantly replaced.
 
Fantastic work @Wiz ! I for one think that the shielded planet variant should have the possibility of being released from it's shield as a bargaining tool during (or maybe even after) war.

"Oh, you do want your capital planet back. By all means, just sign this peace deal and I'll release them".
Or
"Release your ships from our space at once or the inhabitants of planet x will be forever locked out"

It probably would be the most pacific one, as releasing a planet should limit the malus opinion of neighbors compared with the other weapons.
 
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Not every type of empire gets its own planet destroyer, though we may very well add more later. What weapon would you suggest for Hive Minds (besides the basic ones they already have access to)?
I think perhaps a colony collosus that 'floods' the planet with trillions of hive spawn destroying and replacing all pops with the hives own pops and maybe a one year resource bonus due to the planet having been 'prepared' by the hivespawn.
 
I have another 2 questions:

1) Does colossus remain a kinda rare thing posseded only by a few empire or will every empire have one converting the wars into a planet blowing mess?

2) For the empire who will have colossus tech will colossus firing weapon be determined by the empire ethos? Like evangelist zealots having a god firing laser, assimilator the assimilator one and more war focused empire using a world cracker?