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Follow the game's development :
Antimatter is a strategy game in a simulated galaxy where you create and incarnate a character.
In command of your spaceship, trade, fight, explore or lead an interstellar empire.
You will dive into a complex universe where you, a mere player, is the insignificant cog of a cruel simulation.

Features

  • Thousands of systems and planets to explore in a gigantic instantiated galaxy.
  • A dynamic universe where dozens of factions struggle for power or survival.
  • Take command of a spaceship, trade, mine, harvest, scavenge, produce and participate in the simulated economy.
  • Manage an existing city or found a new colony on any planet.
  • Climb the political ladder of a commercial corporation or a sovereign organisation, or found a new one from scratch.
  • Interact with AI characters who are living independant and simulated life in the Antimatter universe.
  • Terraform entire planets by altering their atmospheric compositions.
  • Fulfil missions for corporations, factions or individuals, or unravel the secrets of this galaxy.
  • Get involved in the Antimatter Crisis and try to change yourself the course of history.

    How To play ?

    Antimatter is a RPG that plays as a grand strategy game, you have neither omniscience or omnipotence, most of your responsibility can be delegated to spaceship captains and governors if you control any territory.
    No micromanagement is required, you have the freedom to deal with the businesses that interests you the most.
    Antimatter plays in the intersideral space, on the planet's surface or in the mysterious undergrounds, you can play all the way from a space journeyman to a galactic emperor.

    Create and customise your galaxy with all available options, such as the stellar systems count and types or the historical events that will impact the simulation of civilisations through the ages.
    • An universe generated and simulated across billions of years with a realistic accretion model of gas and dust.
    • A simulation of civilisations through thousands of years, filled with historical events.
    • Asteroids, comets, nebulae, planets and many other astral objects to explore.

    • A wide range of planets, entirely simulated and procedurally generated.
    • A procedurally generated geology.
    • A realistic and dynamic atmospheric simulation.
    • Terraform entire planets by altering their atmospheric composition.


    All civilisations are procedurally generated and simulated through thousands of years. Ruins, monuments, POIs and ancient artefacts exist thanks to this detailed simulation.
    • Manage your crew and the specialty of your crewmembers.
    • Customise your spaceship with many modules and choose from dozens of different spaceships.
    • A radar simulation with passive and active detection, which rewards stealth and reconnaissance.
    • A varied range of weapons, such as missiles capable of crossing millions of kilometres.
    • Manage your fleet and hosted ships.
    • Land on any planet or asteroid in the galaxy.
    • Study and harvest exoctic flora.
    • Meet and profit from ancient civilisations.
      • Create and incarnate a character, define his physical and psychological traits, his education, characteristic and skills and his appearance.
      • NPCs have their life simulated from birth, each trait and characteristics come from an experience in their lives.
      • NPCs have their own artificial intelligence, they act by themselves with the same liberty as the player. You are not the only actor in this universe. NPCs also contribute to the political system of organisations.


      Create, or be part of a commercial corporation, a sovereign state or a criminal organisation, fulfil missions and climb the ladder of the organisation.
      • Trade goods.
      • Mine and harvest ressources and objects.
      • Manage and build space stations, and produce new spaceships.
      • Embrace a pirate's life with extorsions and deceiving actions.
      • Administrate cities and territories, or lead an entire empire.
      • Participate in the organisation's political intrigues.
      • Lead and organise a fleet by using your influence.


      THe terrain of each planetary region (tile) can be explored and can even be the location of a colony. Each region has its own geology, a simulated biosphere and can host ancient ruins generated during the historical simulation.
      • Manage the city's industry, trade, demography and its political aspects.
      • Plan the city's defences against orbital threats.
      • Develop and extend the city's frontier across the planet.
      • Explore deep and mysterious subterranean regions.
      • A destructible environment and a liquid simulation.
      • A dynamic weather system.
      • A monstruous fauna (only giant worms for now).


      Change the climate of an entire planet by slowly modifying its atmospheric composition, observe the chain reactions on its geology, hydrosphere and its biosphere thanks to a detailed and realistic atmospheric simulation.
      The flora is entirely simulated where each species' reign depends on local conditions and the other competing species.
Antimatter
Geoffroy PirardDeveloper
Geoffroy PirardPublisher
1970-01-01Release
🎹🖱️ Keyboard + Mouse
No user reviews (0 reviews)
Private Alpha - B0006 (The Giant Update)

The Giant Update

Build 0006 is ready for the private alpha. If you\'re part of it, please read the important information at the bottom of this page.

This is a massive update, I\'ve estimated that writing a full patch note would take me about two full days of work, which just isnt worth it.

Instead, I\'ll highlight a few key changes:\n

  • Complete rework of the economy/production line simulation and lot of AI (build order, investment behaviour) work plus a complete overhaul of the UI.

    [/*]

[img src=\"https://cdn.cloudflare.steamstatic.com/steamcommunity/public/images/clans/38944940/2cc434bb8e313aa659e349de3ec4771dba8c2c7d.png\"][/img]

  • Overhauled the trade node simulation.

    [/*]

[img src=\"https://cdn.cloudflare.steamstatic.com/steamcommunity/public/images/clans/38944940/6fbb1cf91dcf44eaf9bb21d1bd2769c2e69c1dd1.png\"][/img]

  • Full scenario system (with a new playable scenario)

    [/*]

[img src=\"https://cdn.cloudflare.steamstatic.com/steamcommunity/public/images/clans/38944940/7b413438639419da9809c7e15591e338b0b1d740.png\"][/img]

  • Doctrine/RoE system for spaceship/AI

    [/*]

[img src=\"https://cdn.cloudflare.steamstatic.com/steamcommunity/public/images/clans/38944940/fe0f418e91612a45752264cc7190cebeaa40708a.png\"][/img]

  • UI/UX rework: numerous tweaks including ship navigation, camera controls, keybindings, RTS-style selection, Time-on-Target orders, queued orders, improved interactions, new interface windows, and much much more.

    [/*]

[img src=\"https://cdn.cloudflare.steamstatic.com/steamcommunity/public/images/clans/38944940/28092aeea54a39c9b018ad40fa5c03bbe8d95a9f.png\"][/img]

  • Space combat rework: expanded weapons, reworked all ships, modules, and weapon stats; added many special behaviours; implemented sensor-based missile detection; improved the complex damage model; overhauled planetary bombardment mechanics; added nuclear blast effects (both in space and on the ground), and more.

    [/*]

[img src=\"https://cdn.cloudflare.steamstatic.com/steamcommunity/public/images/clans/38944940/3abd09ca346dd420b3eae93ebb86611b51e353f7.png\"][/img]

  • Some graphical enhancements: improved gas and dust clouds, orbital bombardment effects, and more.

    [/*]

[img src=\"https://cdn.cloudflare.steamstatic.com/steamcommunity/public/images/clans/38944940/22d424ce2c5c965311020f5c32d9ff5980d1cb02.png\"][/img]

  • Reworked historical simulation

    [/*]
  • Reworked colonization mechanics

    [/*]
  • Improved atmospheric simulation and accretion model of planetary bodies

    [/*]
  • Massive improvements to AI and overall performance

    [/*]
  • Better performance, improved code maintainability, and reduced code volume

    [/*]
  • Production-level Lua support, expanded moddability, and broader localization

    [/*]
  • Countless bug fixes

    [/*]
  • Numerous tweaks and small feature additions

    [/*]

\n\nWhen starting the prologue : read your in-game mail.

\nThere is a small performance drop (game hangs for 250-500ms) every day passing -> sorry about that, it Will be easily fixed: it is the lua (daily) script methods being recompiled each time instead of being cached virtually during call.

[hr][/hr]

WARNING : SAVE/LOAD IS DISABLED FOR THIS BUILD

Save/load is currently transitioning to a fully native, serializable data structure (currently 90% of game entities follow this strict structure). Once complete, this will ensure long-term stability and allow future expansions without introducing bugs or extra development overhead.

[hr][/hr]

WARNING : MAIN SCENARIO IS DISABLED

The main game mode is currently disabled to focus development on smaller scenarios, which are used to iterate and test focused gameplay slices more efficiently.

[hr][/hr]

\n

[ 2025-08-04 14:48:47 CET ] [Original Post]

Minimum Setup

  • OS: Linux
  • Processor: Pentium 4 @1.5 GHz
  • Graphics: AMD or Nvidia Graphics card with 512MB RAM
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