About the Game
ZeroSpace is a hybrid sci-fi RTS / RPG game that allows you to play as the commander of The Protectorate, a galactic force dedicated to securing humanity’s place in the galaxy. The Orion sector is locked in a vicious power struggle between many alien factions, all armed to the teeth and ready to fight to the death to achieve space dominance. Harness the latest warfare technology and recruit seasoned shock troopers and specialist crew members. Navigate through political turmoil as you make the hard choices needed to guarantee humanity’s place among the stars. But really the choice is yours. Don’t like the Protectorate? Pick a different faction, and wipe your opposition off the face of the galaxy.
Wage Intense, massive scale conflict
Deploy infantry, artillery and air weaponry to dominate the battlefield. Engage in strategic buildcraft and troop deployment either solo, with a friend or against everyone. Orbital weapons, nuclear strikes, mechs are just some of the ingredients you get to play with. Pick your favorite arsenal and allegiance and lay waste to your enemies, scattering their burning carcasses among the Orion Sector.
You are the last line of defense
Jump into an epic, cinematic saga of brotherhood in arms that spans the galaxy. Take on the mantle of Aster, Commander of the Protectorate, tasked with saving humanity from losing access to interstellar travel and receding into an age of darkness and ignorance. Engage in a cinematic RPG experience where your choices shape the future of the galaxy, then drop into the battlefields to execute on your strategies.
Choose your allegiance & arsenal
With 4 warring factions (3 active in pre-launch period), 7 mercenary factions and 14 distinct commanders all vying for power and dominance, you will have to use all your wit and strategic thinking to come out on top. Ally yourself with the right parties, build out your force, and protect the Orion sector.
PROTECTORATE
A Caelo Ad Terram.
For centuries the Protectorate have been the stalwart defenders of humanity’s ventures through the Orion Arm, guarding against enemies foreign and domestic of the United Earth Spheres. As humanity’s galactic infrastructure teeters on the brink of collapse over a deficit of the resource “flux,” the Protectorate brings honed tactics and heavy firepower to bear. Field veteran commandos to deep strike enemy positions, or bring the heavy firepower of your mech divisions to break enemy lines.
GRELL
Grow. Expand. Exterminate.
The Grell are a tide of highly evolved plant-like creatures that spawn sites of raw flux crystals through the galaxy, and humanity’s first contact with alien life. As external powers dive deeper into exploiting flux for faster than light travel, the once passive Grell have begun to flood across worlds, wiping out those who would threaten their biosphere. Expand your blooms by spreading the roots of your biomass across the battlefield, and rip apart your enemies with twisted evolutions from the acidic Harbinger to the rampaging Reaver.
LEGION
Across a Million Worlds, We March.
The Legion of Truth are a fanatical empire from beyond the reaches of known space, devoted to their Emperor and a pantheon of god-like beings. Their armies crusade across the cosmos, bringing all in their path under the Idals, and purging those unwilling or unable to accept the voice. Drown your enemies with waves of expendable Thralls and Fanatics, and break your enemy under the treads of the titanic Terror Tank, a mobile fortress that can reconfigure with the tide of battle.
XOL
For Purpose. For Survival.
The Xol are civilization of autonomous robotic consciousness, brought to the brink of extinction by the dark crusade of the Legion. Though fiercely individualistic, they are united by one imperative: survival. As the tide of annihilation turns against them, the Xol will bring the most advanced robotics technology in the galaxy to bear, wield the accumulated genius of their society, and wipe out all who threaten their future.
Join a persistent, shared galactic war
Rank to become the dominant battle group in the sector as you take part in a living, breathing galaxy shared by thousands of real players. Defend your territory and conquer neighboring planets by leading a vast armada of troops, aliens, creatures, vehicles, and heavy weaponry- all for the glory of your alliance.
Enjoy Classic RTS combat, evolved
Building on decades of RTS mechanics, enjoy a unit management and control system that is both streamlined and deep, allowing for smooth control at all levels of play. Are you a fan of micromanaging every unit type or do you just love the big ball of death? Zerospace makes it easy for you to manage your armies and conflict. Play your way with several gameplay modes: Solo, Co-op, Co-op /w AI, PVP, etc.
Feature & content breakdown:
A singleplayer campaign with 15 main story missions, 10 hero loyalty missions, and 15 side story arc missions. With choices and dialog trees similar to Mass Effect and Baldur's Gate.
Hours of cinematic cutscenes and interactive dialogs where your choices dictate the game’s outcome.
10 specialist heroes from various factions in campaign mode to build relationships with, or select from over 14 to lead your multiplayer games.
A separate, persistent Galaxy map with multiple game modes that contribute towards shared conquest. (Co-op, Single-player, PvE, 2vAI, 2v2, Scenarios and 1v1)
4 main factions - From a plant species to organic robots.
7 mercenary factions - Delivering even more specialized battle groups
Wishlist & Follow today!
Screenshots
14 imagesVersion Information
Steam Patch Notes
Official update history
Galactic War
General
Shop prices now display the correct currency
Arsenal now updates immediately after purchasing from the shop
Fixed topbar energy and building health mastery bonuses not stacking
Aster
Factory now unlocks 3rd and 4th mercenary units
Campaign
General
Fixed a bug where starting resources in a mission didn’t properly display in the UI
Small UI updates on Ship
Celestari (mission) no longer unlocks too early
Versus/Skirmish/Survival
Ascension
Updated materials on rocks
Grell
Building health regen decreased from 4 health/second to 1 health/second
Harvester
Health decreased from 275 to 250
Base health regen removed
No longer spawns Biomass when stationary
Spawn Cultivator now starts on cooldown
Spawn Cultivator can now be placed off of Biomass
Legion
Galavax Fireball speed is now consistent when cast range changes (Previously increased cast range would increase speed)
Protectorate
Aster can now place his turret within the radius of Control Towers
Hauler Medbays Upgrade healing and radius increased by 25%
Juggernaut
Irradiating Panels upgrade removed
Heavy Plating upgrade added - Increases Juggernaut armor 3
Xol
Defiant
Collision size increased by 12%
Armor type changed from Heavy to Medium
Rumbler Molten weapon damage changed from 50 (+100% vs Medium) to 70 (+100% vs Buildings)
Spectron Molten splash radius increased from 1.5 to 3
Marran
Pulse Barrage damage per shot decreased from 50 to 45
Bulwark health reduced from 1,200 to 1,000
Badger cost increased from 200/150 to 200/175
Misc/Bug Fixes
Fixed Hauler sound issue when landed
Added attenuation to Hauler liftoff and land sounds
Updated Hauler land sfx
Fixed a bug where multiple Endari Shadow Leeches could attach to the same target if attacking at the same time
Fixed issue with Gravitrons Siege ability
Fixed sorting of Legion and Endari units
Misc Smaller Changes
Updated logic for where beam weapon visuals end
Fixed turrets visually staying behind when their owner has been loaded into a bunker or transport
Fixed an issue related to turrets visuals for clients when an effect was applied to the turrets owner while offscreen
General
Fixed regression and some bugs with building queue
Fixed more issues related to merge menu closing early (unmerge and some units dying)
Fixed Xol powerfield patchiness
UI fixes for faction, unit, and power displays
An error is now displayed when you go to build without having any seedlings as Grell
Updated faction display in lobby
Hid map that is still under development
Misc localization updates
Galactic War
Fixed Aster Sentinel upgrades
Fixed Aster Predator shield upgrade
Fixed Galavax cheaper infantry upgrade not reducing flux cost
Increased Aster and Galavax harvester speed to 500
Updated resource icons
Fixed double commander exploit
Misc UI tweaks
Versus/Skirmish/Survival
General
Heroes now grant XP based on owning player level rather than owning player XP (70 + 0.05 * player XP -> 70 + 70 * player level)
T7 talents changed from flat bonus every time XP gained to bonus based on XP gained
Resource Talent +7 hex/flux -> 0.25 hex/flux gained per XP
Power Talent +1 power -> +0.1 power gained per XP
Legion
War Experience no longer grants XP after reaching max level
Galavax
Weapon damage point reduced from 0.5s -> 0.4s
Attack leash range increased from 1.1 -> 2.25 (attack less likely to be cancelled vs running targets)
Mammoth
Stomp damage per second reduced from 60 -> 45
Removed line damage on unit kill
Dark Disciple / Stormbringer mounted move speed bonus reduced from 125 -> 50
Arandi
Phoenix Guard cost reduced from 250/50 -> 225/50
Free Corsairs
Deadeye cost changed from 75/200 -> 100/175
Raider range increased from 8 -> 9
Rover heath increased from 320 -> 340
Marran
Sharpshooter
Health and Shields reduced from 100 -> 80
Damage reduced from 15 -> 14
Valkaru
Hound damage decreased from 18 -> 17
Misc/Bug Fixes
Fixed various units not being pushable by other units
Fixed units being able to walk next to the bottom side rocks on Starsand
Predator shield upgrade fixed
Juggernaut Heat Discharge now ends when hidden (Eg. by Erandi Devourer Devour)
Mammoth stomp no longer works while hidden (Eg. Erandi Devourer Devour ability)
Endari Wyrm Scorch the Land ability now no longer deals damage after Wyrm dies
Endari Wyrm Scorch the Land ability fixed issues with casting in direction away from current facing angle
General
Grell starting base now begins with full biomass
Topbar power buttons now show cooldown duration
Fixed drag select occasionally not ending when letting go of mouse button
Fixed score screen not always displaying when you surrender
Resolved an issue with not getting the correct faction in Survival
Ability casts are no longer interrupted by auto attacks when walking towards the selected target
Fixed buildings being able to be queued for a short duration after their prerequisite buildings were cancelled
Fixed Badgers not always doing damage
Galactic War
Difficulty scales all rewards now
XP gain from level 12 -> 30 has been corrected, no xp/levels are lost
Galaxy fuel cost is temporarily cut in half to help navigate around pirates
Galactic War matchmaking waits for better matches instead of forcing matches quickly
Fixed loading screen closing before the galaxy was ready to be shown
Alliance icons now properly display instead of showing a white square
Fixed match history bug for galactic war players with over 700 games
Versus/Skirmish/Survival
General
Replays now have match stats button
Chat pane now closes when the replay browser is opened
Grell
Deep Nest
Power cost increased from 15 -> 18
Boomers spawned reduced from 4 -> 3
Rapid Germination faster building construction reduced from +40% -> +30%
Boomer health reduced from 250 -> 150
Legion
Efficient Upgrades
Research Speed increase increased from 35% -> 40%
Research Cost reduction increased from 35% -> 40%
Deadnought bombardment damage per bomb increased from 60 -> 70
Steelsworn armor increased from 0 -> 1
Protectorate
Commando Eagle Tactics now requires Mechanical Research Lab instead of War Foundry
Hauler health increased from 400 -> 500
Predator
Reinforced Matrix shield decreased from 75 -> 50
Reinforced Matrix cost decreased from 150 -> 125
Titan Antimatter Boosters range decreased from +4 -> +3
Misc/Bug Fixes
Fixed Thralls giving health/energy to nearby heroes on death
Fixed Disruptor not doing damage on dedicated servers
Fixed Xol buildings not being able to be prequeued without requirements being met
Boomer explosion no longer damages air units
General Gameplay
AI surrender can now be declined
Xol and Grell can now build on each other's Power Fields/Biomass
Fixed jump on Aster and Commandos distance capping at 10 instead of displayed distance of 12
Ground attack range now correctly follows weapon range - Units able to attack the ground, like the Thresher (Attack move + Right Click) were previously able to exceed their intended range.
Added secondary Harvester Rally point for bases
Galactic War
Fixed Xol having more heroes on Iron Shield than intended
Fixed pirate matches switching from Brutal to Casual
Improvements to reconnect feature
UI and Profile
Fixed an issue with picking enemy AI faction in lobby
Added a tab in profile to link twitch account (This will allow players to activate their Twitch Drops)
Non-default portraits no longer initially show as a yellow square
Updated Steam name rendering in some areas
Text
Large Turkish, Vietnamese, Japanese, and Korean localization updates
Fixed some areas that weren’t using localized text
General
Fixed cases where matchmaking could fail after a match was found.
AI mission damage can now scale by mission setup and selected difficulty. (Used on grey horizons)
Double-click unit selection is more reliable
Ctrl-click and select-all now better match the intended unit type, including molten variants.
Updated translations and UI text across supported languages.
Galactic War
Match rewards now spotlight item drops for Galactic War
Improved reward icons and hover details on the post-match rewards strip.
Bug Fixes
Fixed a loading screen crash related to text initialization.
Fixed a replay-only movement animation stutter for She Who Stalks.
Improved Grey Horizons mission setup and related issues.
Minimap interactions and move commands no longer interfere with double-click selection.
Current Release
Build 25471793
Uploaded Sep 25, 2026
System Requirements
How to Install
RTS.exe to play
Troubleshooting tips
• Run Redist/_CommonRedist installers if game won't start
• Add folder to Windows Defender exclusions
• Run as administrator
Download
Direct link available
Needed when extracting (WinRAR / 7-Zip) — not a site login.
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View AllDownload ZeroSpace for PC with a direct link or via torrent. Get the full version of ZeroSpace for free. ZeroSpace is a Action released by Starlance Studios.