Be the bad guy in this modification for Half-Life 2 : Episode 2 and step into the boots of a stranded Metrocop, left for dead in the abandoned City 10.

Experience a time before the fall of City 17 - 11 months before the deployment of Gordon Freeman. Bring the brutality and chaos of the Combine regime to the hidden rebel sanctuary of City 10. Endure the bitter cold as you fight your way through rebel shanties, infested tunnels and subway systems. Survive the Combine plague, and reclaim the Combine stronghold known as ‘Pillar 10’.


  • Tear a pathway through four chapters of violent chaos.
  • Employ a deadly Combine arsenal including a Stunstick, Manhacks and a prototype AR2.
  • Experience combat without a HEV suit. Think fast and shoot first... or succumb to bullets and claw.
  • Lore rich environment - unravel the story behind the sanctuary of City 10.
  • Face the music with a custom soundtrack from the likes of Morch Kovalski (AKA Yackson) and Spencer Baggett.
  • Full closed-caption support.


  • Half-Life 2 + Episode 1 & Episode 2.
  • Source SDK 2013 (Beta)

Get it now!

Steam Store


Development and lore Q&A thread

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az bg night0000

Entropy : Zero Patch 1 is now live. Your client should update soon.

You can find the official list of changes fixes and inclusions here.

Several game breaking bugs have been resolved, such as the invisible barnacle tongue bug, a level change bug, and I'm pleased to say the final boss has his shield back - something that should have gone out with the initial release, but didn't for some reason. Sorry about that!

az c4 30000 1


Thanks for the support.

EZ Patch update

EZ Patch update

News 2 comments

Quick update on the status of the patch.

Entropy : Zero released!

Entropy : Zero released!

News 8 comments

Entropy : Zero has been released !

Prepare for release

Prepare for release

News 10 comments

Entropy : Zero will be released tomorrow (October 10th)

Entropy : Zero Lore - Combine Data Tome - Part 1

Entropy : Zero Lore - Combine Data Tome - Part 1

News 1 comment

Entropy : Zero Lore - Combine Data Tome - Part 1

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Patch 7 comments

Copy files outo archive in custon-folder in the EP2.(etc */STEAM\steamapps\common\Entropy Zero\Entropy Zero\ep2\custom\)

Comments  (0 - 10 of 78)

This one is an interesting fella, which I can basically summarize in a few words : PROSPEKT for free.
(but better than Prospekt, in fact).

with the old "one man army" development flaws we see here and there (the Gate 1/2, Focalpoint, ...), where beta testing seems unrealized and unforgivable bugs, uncorrected.

Despite all of these, I'll give this one a PIN because the overall quality, be it maps, story, or gameplay, is really above average and we can clearly see the dev' put a lot of work and time into this.

First of all, it's the better of all the "Play As Combine/the bad guy" mod, even better than Human Error (because this one was also "unfinished" in the end), where you're put in the shoes of a Metrocop, killing Citizens and Headcrab, in another City, not City17, but the snowy and deserted City10 touched by a "plague".

What's interesting is that each chapter is a different story/gameplay where you have to use different tactics to win, be it "stealth" when faced against numerous reprogrammed turrets, or to follow your only source of light : a feeble Stalker in dangerous corridors.

So, yes, the difficulty : who is meant to play ENTROPY ZERO? Is that those casual gamers nowadays? Or veteran 30/40 years old players who followed HL1 and/or HL2 since one or two decades?
As I've played more than one hundred mod's, I've seen so much worse in difficulty.

In fact, there are two kind of difficulties : one that is based on "skills", in the likes of the low armor/health, numerous waves of enemies, sometimes in infinite respawn...
These one can be tough... Not the worse, again, I've seen. It's not Black Death, the Gate, or else.
It's "fair" but you've to be "skilled".

The other one is "unfair" difficulty : it takes the form of that now infamous Stalker section where the Barnacle tongues sometimes disappear, and the Stalker dies for apparently "no reason", or some bugs here and there like in the final battle,
or some fights where you absolutly don't know what to do and you die because... ignorance.

But, in the end, it has so many "wow" moments, such as the ride to the Citadel, the Citizens dumping the characted (thought to be dead) in a hole with other dead Cmb, and the final part with the "bad" Vort threatening to destroy everything, corrupting a Hunter to his side, and numerous light and SFX effects such as those "liquid" effects during the final battle, it was great, really...

Too bad many players will give up because the "unfair" difficulty parts... The "skilled" parts are more a problem of a generation...

But, overall, don't give up on this mod, or maybe wait for the next update, which will probably correct the flaws of this version...

It's worth, really, worth, the time.


Reply Good karma Bad karma+7 votes

So, just wanted to ask: Can this mod support additional modding ? By that i mean reskins, sound replacements, texture mods etc. ? Like the original HL2, is there a way to make the "custom" folder for the mod ? So far i could only add/replace content by putting modded stuff in hl2, episodic and ep2 folders within the mod, the EntropyZero folder doesn't seem to recognise anything added to it.

Reply Good karma Bad karma+1 vote

я дико извиняюсь за свой предыдущий комментарий но этот сталкер реально выбесил меня а так мод мне очень понравился
мне всё таки удалось провести его от одной точки до точки( но спустя 2-3 дня после начала прохождения) а потом полностью прошёл мод и жду новых проектов

Reply Good karma Bad karma0 votes

Are there plans for a sequel?

Reply Good karma Bad karma+2 votes
Breadman_at_Hartley Creator

There may be some extended play down the line, but nothing of a sequel at the moment.

Reply Good karma+2 votes


кусок ёбаного говна!! Заебался проходить место со сталкером !!! Он тупо умирает без причины!! Автор ты идиот ,делать такое?!!!

Reply Good karma Bad karma-10 votes

hard to play and lot of bugs, liked the maps & story.

Reply Good karma Bad karma+1 vote

I hope people will stop hating your mod! It definitely difficult, but it not bad. As GF we've killed tons of the metrocops and that was ok. Now we playing as one of them, all is logical! Keep your job in this level and be well!

Reply Good karma Bad karma+4 votes

where i can get the Source SDK 2013 (Beta) i only see the single player and multiplayer one

Reply Good karma Bad karma+1 vote
Breadman_at_Hartley Creator

Hi !

If you download the Singleplayer 2013 version, you can right click on it, go to Betas and in there you will be able to change the version.

Reply Good karma+3 votes

Thanks! and i can't get past level az_c3_z2 where you must protect the combine stalker, i arrive at one point where even to him happens nothing it still appears that if he dies ?¿ and reverts to another save it's very frustating.

Reply Good karma Bad karma+1 vote
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