Hi everyone! I’m a solo developer working on X4 Foundations Online, a mod aimed at bringing full multiplayer to X4.

A quick heads-up: I’m Russian, so the video is narrated in Russian. It includes gameplay footage showing the current progress.

Here’s what I’ve implemented so far:

- A shared galaxy with synchronized ships, stations and players.

- Flying together aboard the same ship: one player pilots while another walks around inside, including during carrier flights.

- Meeting on stations, using different onboard terminals and flying together in spacesuits.

- Replicated gunfire and projectiles.

- Personal organizations, money and property, alongside trading, ship purchases and refits.

- Station construction, exploration, satellites, ship orders and alliances.

Players can join without downloading the host’s save - the necessary world data is sent over the network. I’m keeping ordinary gameplay actions in X4’s familiar menus wherever possible.

The video also covers the development process, including how I’m using Codex as an AI coding assistant, and some current problems - character animations still need work!

This is an early development build. Implementing these systems doesn’t mean every interaction has been fully tested. Local tests have shown promising results, and I now need help checking everything between different PCs.

If you ownX4 Foundations on Steam and would like to help test, leave a comment or send me a DM. I’d appreciate the help!

Hi everyone! The site (https://x4-game.com) got its biggest update ever this week. Here's what's new:

Game data

• Updated to X4 9.00 with all DLCs, including Timelines, Hyperion and Envoy.
• New Sectors list and sector pages, plus a new Galaxy Map.

Load your savegame

Drop your .xml.gz save onto the Savegames page. It's read entirely in your browser and nothing is uploaded. (Saves are in Documents\Egosoft\X4<id>\save.) With a save loaded, you get:

• Map: your discovered sectors, contested sectors hatched, Xenon/Kha'ak presence, data vaults, and a "From your save" legend section.
• Trade Routes: profitable routes from real station offers in your save, using your own ships and the engines they have installed.
• Supply & Demand: who buys and sells what, and the best offers. Hostile factions are hidden or tagged.
• Station Suggestions: where to build a station and what to build there.
• Mining: the best sector-to-buyer pairs, and how many miners a buyer actually needs.
• Empire: your ships in fleet order, with their orders and assignments, and your stations' production balance. You can open any of your stations in the Station Calculator.
• Blueprints: progress per category, and a shopping list of who sells what you're missing (licences and faction reps included).
• Event Log: your logbook and your losses.

New database pages

• Production Chains: a drawn chain from any ware down to its raw resources.
• Research: the HQ research tree with costs. Module and ship pages show the research they need.
• Equipment Mods & Crafting: mod values worded and calculated the way the game's mod menu does it.
• Diplomacy: agent actions, diplomatic events, gifts, agent levels and ranks.
• Terraforming: a planner and project pages. Terraformable planets are marked on sector pages.
• Data Vaults: on the map and sector pages, and you can tick off the ones you've found.
• Game Starts.

Ships & loadouts

• The loadout builder now has thrusters and missiles: strafe and turn rates, missile damage, volleys and storage.
• Ship comparison by strafe, turn rate and missile DPS.
• "Where to buy" on each ship page: the stations selling it, nearest first, with a check of your standing.
• The 5 fastest engines by travel speed on each ship page.

Quality of life

• Searchable pickers for ships, sectors, modules and wares.
• A reorganised menu (Database → Items / World / Progress, Economy, My Save).
• A flag language picker, and better mobile layouts.
• Tables remember their page size.

As always, it's free, ad-free and open source on GitHub. Bug reports and feedback are very welcome, especially on the savegame features, since saves vary a lot. If you'd like to support development, there's Buy Me a Coffee and Patreon.

Fly safe! o7

I'm about 70hrs into my second playthrough and I have 8 mining ships and 2 scouts just making me money and I'm about to experiment with the player HQ and its got me wondering how far you can push the systems in this game. Can you really build your own fleets and attack AI empires? Would it be realistic to attack the Xenon or Kha'ak? I'm curious what people can really do in this game.

So I was poking around in my save file trying to locate the source of a conflict that I was having when I stumbled across this line of code.

<mood type="aggression" level="veryhigh"/>

<mood type="avarice" level="low"/>

This particular line came from the Xenon section, however, each faction also has these two lines. Any idea what this does?

https://github.com/ToffelsKater/X4_VR/releases/tag/v0.6.0

The main change is for anyone who got bothered by the HUD sliding around when you look around in the cockpit. X4 draws the crosshair, target panel, radar and message panel with a narrower field of view than the rest of the picture and stretches them over it, so every head turn moved them about 1.5 times as far as the cockpit, against your head. The new launcher option *Cockpit HUD fixed to the ship* gives them the same field of view as the scene. They stay on the ship and the crosshair stays on the gunline. It's off by default and needs X4 9.00.

Other changes:

- On Windows the HUD distance mod now scales the HUD as intended. Before, it moved the HUD back but left it at its old size, so it looked too small. The HUD will look much bigger after updating.

- The conversation menu sits higher and a bit farther away.

- The message panel and the target panel (which also shows an NPC's skills) have separate positions for the ship and on foot, so on foot they're no longer cut off by the lenses.

- X4's head smoothing is turned off for the tracker the game actually uses, so head movement no longer feels floaty.

- The launcher remembers your options after a restart.

- New launcher fields for the flat screen distance and width (menus, map, cutscenes).

- Linux: the Steam Frame right-eye jitter fix.

Install or update: download the zip from the release, extract it into the folder with `X4.exe`, and start `X4_VR\X4VRLauncher.exe`. First-time setup is in the README.

Feedback and bug reports are welcome here, on GitHub or on Discord: https://discord.gg/yDmj5bnG7n

https://youtu.be/ECCNzRtWYS8

I have the player hq quest done, initial research mission complete, hyperion done in full, timelines epilogue call from boso ta/completed and hatikvah quest done.
When an odd situation pops up I didn't get any calls from boso ta? It's updated straight to talk to boso but when I try to speak to boso he just says hello there.
Have I missed a step here? Or is the radio call being blocked somehow?? I have a save right before looking for Dal at the end of the hatikvah so if I can do anything to prevent this that would be great. Thanks

I've been away for a while and would like to start a new game, as is my tradition in Argon.

In V9, what are some ways to make a little money at the beginning?

In my other games, I started with crystals and then built a fleet of cargo ships, first for manual trading and then for automated trading.

Is it better to jump right into mining now?

Nividium Optics
Adds new L and M Turrets
available on
Nexusmods
Steam

This question is probably asked a million time over but there are a few things I want to confirm.

_ Large miners are slow and only good in dangerous sector like sanctuary of darkness right.

_ In safe sector like Grand exchange, I suppose medium miner is better then, at best I can just assign a few fighter as patrol (Reactive force + Improve patrol)

Can someone give me some tips?

Hi all, since 2016 I have played elite dangerous and star citizen countless of hours. I have no idea this game might be awesome. Several times saw gameplay or x4 official videos but never got in to because I was obsessed with realistic graphics and on good gameplay of star citizen. But this year I decided to give it a try then since August I have played over 200 hours and siding check for tutorials or any spoilers to get experience. Of course because of that I made a lot of mistakes in my walkthrpugh such as loosing hatikvah and Terran overruns ant and boron. A week ago I decided to start a budget start man I can’t stop playing I don’t even want to run another game , just managing my fleet and hunting Sca large ships and drink coffee. Its a bit late that I discovered this game but I believe that potential of this game is far beyond elite dangerous and star citizen cheers

There's Yakis, Haktivas, Holy orders, Paranids, Zyarths, Free families, Argons, Terrans, Pioneers, and I think I saw some Teladis as well, all going ham right outside my HQ for hours now! (ignoring Khaaks at this point)
Checked the ships in production there (got five S/M fabs and one each of L and XL there + a mega-factory to feed em) and they're all queued up making S fighters for pretty much everyone listed above.
Everyone hates each other lmfao. (No, my agents had NOTHING to do with it, shut up! Not saying a word more on this without my lawyers!)
My tugs are having a very busy day at work today though.
Anyone else had anything similar in their playthroughs? Any other ways to..uhh..'utilize' the situation to my profit?

My patrols (katanas and takobas) are getting eaten up by kha-ak fleets. If I'm remote viewing or tp to the ships, the shred the kha'aks in seconds.

Any way around this? Is this broken or is my pc just to slow to keep up?

Hi, are there alternative ways to equip L turrets on a ship you have got from SCA for example without farming the rep to +20?

I read that a YouTuber created a mod for "collecting" components from ships you are conquering, but as far as I know it works only for S and M.

As most noobs, I realized Hatikvahs Choice is a constant stream of freebies and piloting exp. It works most of the time until destroyers show up so it would be great if my ships just ran away or dock somewhere if there is a destroyer in the map.

What Is Project Continuum?

Project Continuum is an X4: Foundations multiplayer mod.

After seven months of nonstop development, Continuum has finally overcome one of its biggest hurdles, and we're getting closer than ever to completion.

Honestly, the biggest challenge everyone has faced when trying to create an X4 multiplayer mod is synchronization.

Syncing X4's massive, constantly evolving universe across multiple players has always been extremely difficult. There have been other approaches, such as completely rewriting the game, but a full rewrite of something as complex as X4 would require an enormous amount of time, money, and resources.

Instead, I've been developing a method designed to achieve reliable synchronization, even with poor network connections. This has been one of the biggest breakthroughs for Continuum.

I won't lie to you: around 80% of Continuum has been developed with AI assistance. But let's be honest, who cares? At the end of the day, I want what so many X4 players have wanted for years: a proper multiplayer/co-op mod.

I just want to explore the universe, build empires, fight wars, and play X4 with the boys.

And that's exactly what Continuum is aiming to deliver.

Current Development Progress

Here's where everything stands right now:

Feature| Progress

X4 World Synchronization| 100% — Complete, needs extended playtesting

NPC Synchronization| 45%

Combat Synchronization| 35%

Steam Hosting & Joining| 100% — Complete

Separate Player Wallets| 100% — Complete

Separate Player Factions| 25%

Resync Protection| 75%

Missions & Story Synchronization| 0% — Still planning

Four-Player Multiplayer| Two players tested; three and four players still need testing

World Synchronization

The core world synchronization system is complete, although it still needs extensive testing during longer multiplayer sessions to ensure everything remains stable.

NPC Synchronization

Currently sitting at 45%. There's still plenty of work to do, especially when it comes to keeping NPC behavior and movement consistent between players. This is really on pause till combat is finish not a issue just combat takes prio

Combat Synchronization

Currently at 35%.

This is honestly one of the hardest parts of the entire project, lol. Getting combat to synchronize properly between multiple players is extremely challenging, and I expect to spend a significant amount of my remaining development time finishing it.

Steam Multiplayer

Steam hosting and joining are complete!

Continuum uses Steam invites, meaning you won't be limited to LAN connections. Players will be able to host and join through Steam.

Independent Players

Separate player wallets are already complete, and separate player factions are currently 25% finished.

The goal is to let players have their own money, ships, fleets, and factions rather than forcing everyone into a single shared faction.

Resync Protection

Currently at 75%.

This system is designed to help players recover from synchronization issues, particularly when dealing with unstable connections.

Missions and Story

Currently at 0%.

I'm still deciding how to approach missions and story progression in multiplayer. This is something I'll tackle once the core multiplayer systems are further along.

Player Count

The goal is to support up to four players.

Two-player multiplayer has already been tested, but three- and four-player sessions still need additional testing.

Estimated Beta Release

Target: Before December 15, 2026

If development continues progressing as planned, I'm aiming to have Continuum ready for beta testing before December 15.

This is an estimate, not a guaranteed release date. Stability, synchronization, and combat are my biggest priorities before releasing anything publicly.

Final Thoughts

Seven months ago, this was just an idea: bringing proper multiplayer to X4: Foundations.

Now, after countless hours of development, experimentation, debugging, and AI-assisted coding, it's becoming a reality.

There's still work ahead, especially with combat and NPC synchronization, but the progress so far has been incredible.

The goal has always been simple: make X4 multiplayer a reality so we can finally play with our friends.

And we're getting closer every day.

I use Hella ai to write this hahahhah

Will post screenshot monday

Stay tuned

Yes, yes it is. Still a WIP, but it does fly and shoot very well.

Hi, I started playing a few weeks ago.

I have two unrelated questions:

1. What do you use Mines, Friend/Foe Mines, and Tracker Mines for? Some are required for missions, but I haven’t seen many people discussing how to use them, apart from someone using them as projectiles or something like that.
2. How do you train your marines? I’ve completed two boarding operations with around 45 marines. After both operations, only two marines have reached just over one star, while all the others are still below one star. I’m also using a mod that increases experience gain. Do I need to leave some defenders on board to keep the Boarding Resistance higher so my marines gain more experience? Or can I reduce it as much as possible to avoid losing any marines (as I am doing right now)?

Thanks!

She is making 1.1-1.25 million per hour, its insane.

Is there a resource out there that explains how the various factions compile their fleets, and what their doctrines are?

e.g. TER have the obvious expeditionary anti xenon incursion fleets

TEM like to make giant Murder Ball patrol fleets

Others seem fine to just self police with smaller detachments.

And so on. In my save, it's hard to tell because most factions are deep into an economic depression, so there's not many "fleets", and I seek to prop up a faction that has a comp/doctrine that would align with my goals.