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Commander wanted!


Drive giant robots, build an army of a thousand Fleas, move mountains if needed, bury the enemy at all cost!

  • Real time strategy.
  • Physically simulated units and projectiles.
  • Terrain manipulation.
  • 100+ varied units with unique abilities.
  • Singleplayer campaign.
  • Challenging, non-cheating AI.
  • Multiplayer 1v1 - 16v16, FFA, coop.
  • Multiplayer online campaign.
  • Really free, no in-game currency, no unfair multiplayer.

Fully Utilized Physics

Simulated unit and projectile physics is used to a level rarely found in a strategy game.


  • Use small nimble units to dodge slow moving projectiles.
  • Hide behind hills that block weapon fire, line of sight and radar.
  • Toss units across the map with gravity guns.
  • Transport a battleship to a hilltop - for greater views and gun range.

Manipulate the Terrain

The terrain itself is an ever-changing part of the battlefield.

  • Wreck the battlefield with craters that bog down enemy tanks.
  • Dig canals to bring your navy inland for a submarine-in-a-desert strike.
  • Build ramps, bridges, entire fortress if you wish.
  • Burn your portrait into continental crust using the planetary energy chisel.

Singleplayer Campaign and Challenging AI

Enjoy many hours of single player and coop fun with our campaign, wide selection of non-cheating AIs and a survival mode against an alien horde.


  • Explore the galaxy and discover technologies in our singleplayer campaign.
  • Face a challenging AI that is neither brain-dead nor a clairvoyant cheater.
  • Have some coop fun with friends, surviving waves of chicken-monsters.
  • Cloaking? Resurrection? Tough choices customizing your commander.

Casual and Competitive Multiplayer

Zero-K was built for multiplayer from the start, this is where you can end up being hooked for a decade.

  • Enjoying epic scale combat? Join our 16v16 team battles!
  • Looking for a common goal? Fight AIs or waves of chicken-monsters.
  • Prefer dancing on a razor's edge? Play 1v1 in ladder and tournaments.
  • Comebacks, betrayals, emotions always running high in FFA.
  • Want to fight for a bigger cause? Form a clan and join PlanetWars, competitive online campaign with web-game strategic elements, diplomacy and backstabbing.

Power to the People

We are RTS players at heart, we work for nobody. We gave ourselves the tools we always wanted to have in a game.


  • Do what you want. No limits to camera, queue or level of control.
  • Paint a shape, any shape, and units will move to assume your formation.
  • Want to spend more time on tactics? Use construction priorities.
  • Want to focus on economy? Order units to kite, strafe or zig zag bullets.

Plenty of Stuff to Explode Explore

Zero-K is a long term project and it shows, millions hours of proper multiplayer testing and dozens of people contributing ever expanding content.


  • Learn to use all of our 100+ units and play on hundreds of maps.
  • Invent the next mad team-tactics to shock enemies and make allies laugh.
  • Combine cloaking, teleports, shields, jumpjets, EMP, napalm, gravity guns, black hole launchers, mind control and self-replication.
  • Tiny flea swarm that clings to walls?
    Jumping "cans" with steam-spike?
    Buoys that hide under water to ambush ships?
    Mechs that spew fire and enjoy being tossed from air transports?
    Carrier with cute helicopters?
    Jumping Jugglenaut with dual wielding gravity guns?
    Meet them in Zero-K!

or just view the media

Engine Testing - Beta Branch Edition

The issues with the AI from the last engine update attempt have been resolved. This time, instead of applying the latest update, we're asking players to test the beta branch. Be sure to report any issues and post if you test so we can judge the effectiveness of the beta branch approach.

In other news, USrank_Shaman is coordinating players to nominate Zero-K for the “Most Fun with a Machine” Steam award and nominations close in two days. See this thread for more information: http://zero-k.info/Forum/Thread/27434
Posted by AUrankAdminGoogleFrog 14 days ago - comment

Engine Update

An update from Spring 104.0.1-287-gf7b0fcc to Spring 104.0.1-901-g89b4773 is now live. Benchmarks sent in by users indicate that the framerate of the new engine is slightly more stable, and that performance is overall quite similar. The main advantages of the updated are the new features and fixes, with the possibility of more fixes to come.

The engine and AI devs have put in quite a bit of work into fixing the bugs found in local and multiplayer testing. However, we don't have the testing volume to find all the issues so please be patient and report any issues.
Posted by AUrankAdminGoogleFrog 18 days ago - comment

Zero-K v1.6.11.3

The bulk of this update consists of technical changes required to make Zero-K compatible with the latest engine version. We aim to update the engine version shortly, if everything goes to plan.

The benchmarking from last week successfully found an effect and we'd like to thank everyone (around 100 people) who submitted a benchmark. The one-click benchmark has been changed to compare the old and new engine versions.

Balance and Behaviour


  • Lobster now adjusts its trajectory against particularly high or low targets for more consistent lobbing.
  • Commander heatray no longer fails to gain damage with range modules.
  • Bandit unit AI now skirmishes against more targets.
  • Artemis missiles now cost 80 metal each (up from being free).
  • Widow no longer fires at radar dots by default.

Fixes


  • Fixed small hovercraft sometimes failing to leave their factory automatically.
  • Blocked gunship direct control exploit.
  • Fixed dive bomber performance impact when diving many shields.
  • Fixed Mearth.
  • Fixed occasional random reordering of matchmaker queues.
Posted by AUrankAdminGoogleFrog 24 days ago - comment

Benchmarking Required

It is nearing time to update the engine that runs Zero-K (the Spring Engine), but first we need to pin down the performance issues that affected many users when such an update was last attempted. To facilitate this we have created an easy to use automatic benchmarker. It currently contains benchmarks for our most pressing issue, but more are likely to be added in the future.

If you are the kind of person who does not use their computer while sleeping then consider running a benchmark and submitting the results to help us out.
Posted by AUrankAdminGoogleFrog 35 days ago - comment

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