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Stellaris Dev Diary #293 - Introducing Coop

Hello everyone!

One of the major Custodian features planned for the 3.8 ‘Gemini’ update is the addition of two cooperative gameplay modes. Up to five players will be able to control the same empire and work together to play the game as a team.

Two Modes of Play​

Surveys suggested that there are two distinctly different reasons people want to play together.

  • I want to play a PvE game of Stellaris with my friends, either to teach them how to play the game or to have a more relaxed game where we can share the duties of empire management.

Stellaris is a complex game, and learning to play can be difficult without a guiding hand. While some people learn well by watching informative videos created by the community, others might do better playing alongside a friend.

  • I want to play a multiplayer PvP game of Stellaris where teams of players go up against each other.

The cognitive load when playing competitive multiplayer can be at times overwhelming, especially during wars. Being able to split duties with other players on the same team could provide an enjoyable experience.

We’ve tried to support both goals through two different modes of play, with slightly different game rules.

Cooperative PvE​

A new main menu entry exists for starting a Cooperative PvE game where all human players control the same empire.

Main Menu Bar now includes Cooperative mode

This will bring them to the Game Browser screen, where one of them can choose to Host a New Game, just like the regular Multiplayer flow.

The hosting player will go directly to Empire Selection, where they can create a new empire or select one they’ve already created as normal, select the Galaxy Settings for the game, and then begin the session.

Unlike regular Multiplayer, the Cooperative PvE flow bypasses the Game Lobby, and the coop players will not need to select an empire. These players hotjoin directly into the hosting player’s empire once the game has begun.

For most purposes, Cooperative PvE is treated the same way as single player PvE is.

Competitive PvP​

The flow for creating a competitive multiplayer coop game is similar to the normal multiplayer flow. One player will host the server, ticking the “Allow Coop” checkbox.

Host Server window with Allow Coop toggle

Other players can join the Game Lobby and open their empires up for additional players.

Game Lobby with slots open for Coop

pdx_eladrin has opened his empire up for cooperative play.

Example of someone joining a coop empire

After Loner has joined the empire.

Empires that have been opened for cooperative play add an “inspect” icon to the portrait so prospective players can see the details on the empire before deciding to join.

Inspecting the Roccan Resistance

Inspect a coop empire.

For more competitive players, the primary player of the empire will be able to lock their empire, which will add a password requirement to joining or inspection.

New Coop Features​

It’s often useful to know what your teammates are up to. To make it a little easier to understand what’s going on, we’ve added Presence Markers to the UI to show which tabs your teammates are currently using.

Presence Markers and the Goto buttons

pdx_eladrin is currently taking care of our research issues, so Loner can worry about something else.

We're currently exploring the addition of Goto buttons in the top right corner that will allow you to bring your camera to your teammate’s location, but this isn't fully functional yet. (And is unlikely to be during the Open Beta.)

Events will be shown to all members of a coop team, and any of the players can select a response. The window will remain in place with the selected option marked with the icon of the player that made a choice.

Event with an already selected response

Only one option for this one, but it’s nice to know it’s already been selected.

What’s Next?​

Next week we’ll be talking about the 3.8 ‘Gemini’ Open Beta.

As the Coop game modes touch a lot of moving parts, we’d like to gain feedback on your thoughts of how it plays as well as find where desyncs and other bugs crop up before the actual release.
 
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Honestly? The fact that things such as Internal Politics, Espionage Rebalance or Trade/Piracy rework are being postponed once again it's really... sad. Nothing against the custodians. They have done a great work with the last patches but, to be honest, there are already many ways to cooperate during multiplayer games (Federations, Overlord/vassals contracts, diplomacy in general, istantaneous and logistic-free Trade Deals, Galcom lobbying but also settings like Clustered Players and so on) while:

- Internal Politics is basically non-existent (and 1/3 of discussion and suggestion threads are on how to rework it)

- Espionage, after 2 years and many rightful complaints, aside from intel gathering is still basically waste of resources (even worse than beforse because of influence instead of ECs)

I really hope to be wrong and that there will be something else for this patch.
Its only the first dev diary, there is always more than 1 thing.
 
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Will there be any potential for co-op players to splinter off from the main empire via the Rebellion situation or AI-uprising? I can't be the only one who sees how much fun that'd be, breaking away from your "oppressive" friend former-master, having a whole proper back-story...
 
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What will the interactions be around DLC be for players that don't own them?
I'd assume it's like multiplayer. Everyone plays with all the DLC the host has enabled - whether they own them themselves or not. (That's at least my understanding of it)
 
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i might prefer the option to vote on event actions since it might be useful if the players coop running an empire are experienced with the game but if ur doing this to teach someone u wanna just.

i probably worded this badly but u get the idea
I get what you mean. We did consider this early on but events turned out to be quite more complicated to handle in coop than we anticipated, both in tech and interaction design (and there are still some tricky cases left to handle), so we've opted to keep it simple in favor of quality and stability for now.
 
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The game synchronizes using deterministic lockstep, which means that all machines makes all the calculations in a synchronized manner (Hence why "Out of Sync" errors are so destructive). The only exception is the AI which runs on the host and this works the same way in coop as in any other MP session, so this won't affect performance in any meaningful way one way or the other.
I'm sorry, but maybe I didn't express myself clearly enough :)
I'm actually more concerned about the lack of work on performance in single player than co-op. And so I wanted to present wishful thinking. Suddenly a miracle will happen and time will be devoted to the performance problem in the next patch, but it's good that you opened my eyes to the truth. Thank you <3
 
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This sounds pretty rad.

As a middle-aged parent, all my friends have given up gaming due to time-constraints.

Any chance you guys will be releasing a "Friends" DLC?
 
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Will there be any potential for co-op players to splinter off from the main empire via the Rebellion situation or AI-uprising? I can't be the only one who sees how much fun that'd be, breaking away from your "oppressive" friend former-master, having a whole proper back-story...

Now, THIS would really be the cherry on top. Also worth considering:

What if another player empire 'integrates' your empire - can it now become a co-op empire?

The ability to split and join with forces during a game would be *chefs kiss*
 
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Hello everyone!

One of the major Custodian features planned for the 3.8 ‘Gemini’ update is the addition of two cooperative gameplay modes. Up to five players will be able to control the same empire and work together to play the game as a team.

Two Modes of Play​

Surveys suggested that there are two distinctly different reasons people want to play together.

  • I want to play a PvE game of Stellaris with my friends, either to teach them how to play the game or to have a more relaxed game where we can share the duties of empire management.

Stellaris is a complex game, and learning to play can be difficult without a guiding hand. While some people learn well by watching informative videos created by the community, others might do better playing alongside a friend.

  • I want to play a multiplayer PvP game of Stellaris where teams of players go up against each other.

The cognitive load when playing competitive multiplayer can be at times overwhelming, especially during wars. Being able to split duties with other players on the same team could provide an enjoyable experience.

We’ve tried to support both goals through two different modes of play, with slightly different game rules.

Cooperative PvE​

A new main menu entry exists for starting a Cooperative PvE game where all human players control the same empire.


This will bring them to the Game Browser screen, where one of them can choose to Host a New Game, just like the regular Multiplayer flow.

The hosting player will go directly to Empire Selection, where they can create a new empire or select one they’ve already created as normal, select the Galaxy Settings for the game, and then begin the session.

Unlike regular Multiplayer, the Cooperative PvE flow bypasses the Game Lobby, and the coop players will not need to select an empire. These players hotjoin directly into the hosting player’s empire once the game has begun.

For most purposes, Cooperative PvE is treated the same way as single player PvE is.

Competitive PvP​

The flow for creating a competitive multiplayer coop game is similar to the normal multiplayer flow. One player will host the server, ticking the “Allow Coop” checkbox.


Other players can join the Game Lobby and open their empires up for additional players.

View attachment 964356
pdx_eladrin has opened his empire up for cooperative play.

View attachment 964357
After Loner has joined the empire.

Empires that have been opened for cooperative play add an “inspect” icon to the portrait so prospective players can see the details on the empire before deciding to join.

View attachment 964358
Inspect a coop empire.

For more competitive players, the primary player of the empire will be able to lock their empire, which will add a password requirement to joining or inspection.

New Coop Features​

It’s often useful to know what your teammates are up to. To make it a little easier to understand what’s going on, we’ve added Presence Markers to the UI to show which tabs your teammates are currently using.

View attachment 964360
pdx_eladrin is currently taking care of our research issues, so Loner can worry about something else.

We're currently exploring the addition of Goto buttons in the top right corner that will allow you to bring your camera to your teammate’s location, but this isn't fully functional yet. (And is unlikely to be during the Open Beta.)

Events will be shown to all members of a coop team, and any of the players can select a response. The window will remain in place with the selected option marked with the icon of the player that made a choice.

View attachment 964361
Only one option for this one, but it’s nice to know it’s already been selected.

What’s Next?​

Next week we’ll be talking about the 3.8 ‘Gemini’ Open Beta.

As the Coop game modes touch a lot of moving parts, we’d like to gain feedback on your thoughts of how it plays as well as find where desyncs and other bugs crop up before the actual release.
This is amazing! I love Stellaris so much and now I can get my 10 yr old into it also. Will this work the same as regular multiplayer where only 1 person has to have all the DLCs?, is it crossplay capable? Thanks!
 
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Will there be improvements to hosting save games? The way it works with no pregame lobby is awful for trying to resume a game session in an orderly way, and there's also not a good way to share the game ID with other players.
 
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The idea is quite nice, but I really Wonder how all of this is supposed to work without massives bugs and crashs, because Stellaris isn't the most stable game in existence.

Nothing against this, but I would personnaly prefered to have a more stable and polished before adding this kind of features.
 
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Maybe one day we will get the feature to create templates for starbases and planets so that we can set and forget.

Given we can now auto research and sector ai is getting a lot better I don't think it is to far fetched to wish for this to become a thing as after setting up countless starbases over the years I genuinely am tired of doing it yet again and again and again and again, maybe with this coop update I can get a "friend" to do it for me in the mean time?
 
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Maybe one day we will get the feature to create templates for starbases and planets so that we can set and forget.

Given we can now auto research and sector ai is getting a lot better I don't think it is to far fetched to wish for this to become a thing as after setting up countless starbases over the years I genuinely am tired of doing it yet again and again and again and again, maybe with this coop update I can get a "friend" to do it for me in the mean time?
Next joke:
The developers thought and decided: "we are tired of improving your gaming experience by removing micromanagement, so here's the co-op for you. Invite your friends to do micromanagement for you (and for us)" :)
 
Maybe one day we will get the feature to create templates for starbases and planets so that we can set and forget.

Personally I'm not too fussed on starbase templates but the auto-design for them desperately needs some attention. Sometimes they have empty slots for no reason (presumably energy but still, it's a starbase so should have plenty) and lately they can get full of archeotech components even after you've unlocked better tech. Example from reddit where a starbase is still using archeotechs even though dragon armor and dark matter shields have been unlocked:

Capture3.PNG
 
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Hello everyone!

One of the major Custodian features planned for the 3.8 ‘Gemini’ update is the addition of two cooperative gameplay modes. Up to five players will be able to control the same empire and work together to play the game as a team.

Two Modes of Play​

Surveys suggested that there are two distinctly different reasons people want to play together.

  • I want to play a PvE game of Stellaris with my friends, either to teach them how to play the game or to have a more relaxed game where we can share the duties of empire management.

Stellaris is a complex game, and learning to play can be difficult without a guiding hand. While some people learn well by watching informative videos created by the community, others might do better playing alongside a friend.

  • I want to play a multiplayer PvP game of Stellaris where teams of players go up against each other.

The cognitive load when playing competitive multiplayer can be at times overwhelming, especially during wars. Being able to split duties with other players on the same team could provide an enjoyable experience.

We’ve tried to support both goals through two different modes of play, with slightly different game rules.

Cooperative PvE​

A new main menu entry exists for starting a Cooperative PvE game where all human players control the same empire.


This will bring them to the Game Browser screen, where one of them can choose to Host a New Game, just like the regular Multiplayer flow.

The hosting player will go directly to Empire Selection, where they can create a new empire or select one they’ve already created as normal, select the Galaxy Settings for the game, and then begin the session.

Unlike regular Multiplayer, the Cooperative PvE flow bypasses the Game Lobby, and the coop players will not need to select an empire. These players hotjoin directly into the hosting player’s empire once the game has begun.

For most purposes, Cooperative PvE is treated the same way as single player PvE is.

Competitive PvP​

The flow for creating a competitive multiplayer coop game is similar to the normal multiplayer flow. One player will host the server, ticking the “Allow Coop” checkbox.


Other players can join the Game Lobby and open their empires up for additional players.

View attachment 964356
pdx_eladrin has opened his empire up for cooperative play.

View attachment 964357
After Loner has joined the empire.

Empires that have been opened for cooperative play add an “inspect” icon to the portrait so prospective players can see the details on the empire before deciding to join.

View attachment 964358
Inspect a coop empire.

For more competitive players, the primary player of the empire will be able to lock their empire, which will add a password requirement to joining or inspection.

New Coop Features​

It’s often useful to know what your teammates are up to. To make it a little easier to understand what’s going on, we’ve added Presence Markers to the UI to show which tabs your teammates are currently using.

View attachment 964360
pdx_eladrin is currently taking care of our research issues, so Loner can worry about something else.

We're currently exploring the addition of Goto buttons in the top right corner that will allow you to bring your camera to your teammate’s location, but this isn't fully functional yet. (And is unlikely to be during the Open Beta.)

Events will be shown to all members of a coop team, and any of the players can select a response. The window will remain in place with the selected option marked with the icon of the player that made a choice.

View attachment 964361
Only one option for this one, but it’s nice to know it’s already been selected.

What’s Next?​

Next week we’ll be talking about the 3.8 ‘Gemini’ Open Beta.

As the Coop game modes touch a lot of moving parts, we’d like to gain feedback on your thoughts of how it plays as well as find where desyncs and other bugs crop up before the actual release.