This game is now available on Steam!

Thanks for your help in getting this game selected for distribution via Steam. More information including a link to the Steam store page can be found below.

Greenlight is being retired. For more information on how to submit games to steam, refer to this blog post.
Apr 9, 2014 @ 2:30am
Apr 27 @ 12:57am

View Zero-K in the store

Store page
Recent Announcements View All (6)
Steam release on the 27th of April
  • A 71 mission campaign that can be played singleplayer or coop with Steam friends.
  • Revival of Planetwars, our multiplayer online faction-based FFA/campaign.
  • Tutorials and user-friendliness.
With these changes we aim to attract and keep as many players as possible, regardless of what game mode they most enjoy. To further this goal, we'd be very grateful if those who voted for us here give the steam version a shot when it is released (and leave a review). Steam isn't the end and I think 10+ years of development shows that we don't know how to stop.

Our steam page is here:

Development Update - April 2017
  • Added Circuit AI to our install and update system. Our AI community has made a few good AIs and we've selected Circuit AI to include by default. Circuit has difficulty levels and replaces the fairly stupid inbuilt AI written several years ago.
  • Produced two good, basic, tutorials. There are plans for a third.
  • Added a streamlined skirmish menu. Make a few selections and instantly start a game without the daunting task of full game customization.
  • Implemented a campaign framework:

On the multiplayer front we've added party support to matchmaking (for 2v2 to 4v4), added coop, and given it all a thorough testing. We have also run a few small planetwars rounds since people love multiplayer metagames so it would be a great feature for release. We found a few bugs and balance issues in the last round but we're confident that they are fixable for release. It was still a lot of fun.

As always, we've spent a lot of time tweaking and polishing the game itself. A notable milestone is that we finally made a proper skin for the UI elements and polished their layout.

Release date: 2010
Zero-K is a free, multiplatform, open-source RTS game where opposing Commanders wage war with increasingly large robotic armies. With design and balance refined over many years of development Zero-K offers many interesting strategies and ways to play.
  • Start with a single commander, build large armies and test your strategies.
  • Enjoy endless variety of tactics and strategies with over 100 units and 3000 hand-crafted maps.
  • Let the powerful interface and unit intelligence help you control large armies while leaving room for smart micromanagement.
  • Change the shape of the battlefield with deformable terrain and terraforming.
  • Join our community of smart, friendly players with ladders, campaigns and tournaments.

Zero-K boasts over 100 diverse units including Vehicles, Tanks, Hovercraft, Planes, Gunships, Ships, Spiders and giant Striders. The amount of unit diversity really is extreme; from the well armored Jack beating your units to death with a spear to glass cannon saturation artillery. Add this to special abilities such as cloaking, terraforming, jetpacks and EMP warfare and there is plenty of room for innovative strategies.

We are dead set against tedious micromanagement. A lot of work has been dedicated to make implementing a plan about as complicated as the plan itself. Other games may limit your ability to implement simple plans such as "move to stand in an arc" or "engage the enemy and stay at your maximum range" but Zero-K has smarter units than that. That is not to say that Zero-K plays itself, far from it, you just won't have to click frantically to make your armies understand simple concepts. Fight your opponent, not the interface!

Units are balanced intuitively using physics. Your robots are armed with many weapon types; Lasers, Missiles, Lightning, Plasma to name a few. These weapons have different characteristics, some are slow and inaccurate while others travel as fast as light. These physical characteristics are used to give units a readily understandable role, for example the small speedy Glaive excels at dodging slow missiles. There are no armor tables to memorize here.

This game has been designed with 1v1, Teamgames and Free For All in mind as well as skirmish AI and cooperative Chicken Defense (alien invasion). So whether you are looking for intense competitive play or more laid back epic battles there is something for you. For competitive players Zero-K offers 15-20 minute long intense battles with very little messing about at the start. Other players may prefer a small tactical teamgame or a larger slugfest where economies can ramp up to produce battles of epic scale. Free for all gameplay actually works quite well with many ridiculously expensive superweapons to create tension and break stalemates. Development of a singleplayer campaign is underway and there are currently some stand alone missions to play.

Some superbly cast 1v1 games can be seen here:
Popular Discussions View All (6)
Apr 11 @ 3:55am
Steam release
Jun 26, 2014 @ 6:45am
Improve Linux Support
Nov 23, 2017 @ 1:49pm
Zero-K is now released on
< >
GoogleFrog  [author] Apr 11 @ 3:57am 
Release is set for the 27th of April. Thanks everyone for your patience. A bit more detail is in this post .
TheMooseIsLoose Nov 20, 2017 @ 11:11am 
Game just released on if you don't want to wait for steam release:
GoogleFrog  [author] Oct 24, 2017 @ 8:24am 
I still think we are on track for a release this year. We've put a lot of work into the campaign recently and parts of it are currently in open testing. I've been tackling polish tasks that are best fixed before new players come in and the list of issues is shortening. We should have a new and improved trailer within a month.

In short, probably December. Although given that its December people may be busy with other things so, to improve bug response time, we may push to early Janurary.
sh4dow Oct 18, 2017 @ 6:35am 
when will this be on steam?
Kiwi Manchot Sep 22, 2017 @ 3:44am 
I tried it today : very good work. I used to play to TA with some friends before, and your game is a successful descendant, and it's nicely started to be more than a descendant.
Keep up the good work :)
diddlydarnman Jul 19, 2017 @ 7:34pm 
Fantastic game! Never had so much fun playing an RTS that's free and I hope it gets released on Steam very soon!:steamhappy:
MasterTBC Jul 9, 2017 @ 6:34am 
Oh wow didn't see this
GoogleFrog  [author] Jun 20, 2017 @ 6:43am 
Thanks, we expect a release this year.
Lynx Jun 20, 2017 @ 12:40am 
For RTS enthusiasts, this game is phenomenal! One of the best RTS games in existence right now.

Check out youtube videos of actual games here:

And click here to download and play the game:
INDIWE Mar 8, 2017 @ 5:50am 
Wow awesome!! cant wait to play!