Lambda Wars is a free standalone multiplayer Source Engine modification set in the Half-Life 2 universe that brings the war between mankind and their brutal Combine overlords to a traditional real-time strategy (RTS) setting.
Recent Reviews:
Very Positive (58) - 84% of the 58 user reviews in the last 30 days are positive.
All Reviews:
Very Positive (2,845) - 94% of the 2,845 user reviews for this game are positive.
Release Date:
Dec 5, 2014

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Community-Made Mod

This is a free community-made modification for Alien Swarm set in the Half-Life 2 universe.

Click here to learn more about mods on Steam.

Install Lambda Wars Beta

Free Alien Swarm Mod


Recent updates View all (176)

July 14

"Bro" - A concerned reviewer

Well, guess what. 83% of the poll that I posted on the last news (actual news) post supported memes.

So here we go boys and girls!

14 comments Read more

July 9

VK Fest update & a small poll

As you may have heard, I talked about an event in St. Petersburg that will be hosted on July 28-29th where I wanted to take part in with Lambda Wars.
This was mentioned in the news post following this link:

Lambda Wars was accpeted but I do come with sad news, however, as there are several issues related to the idea of taking part in it.

Last year

Last year was great, as the organization of the event was timed properly, we were given time to fill out the necessary documents and we were even given the equipment for the showcase. Discussing and planning together with the event manager, who was in charge of it all, was smooth, and in case you couldn't bring some of your hardware - the event managers could provide their own equipment just in that matter. All this was deiscussed months before the actual event.

This is where I came to be with my issue. My equipment broke & I didn't have an alternative at that time. Thankfully, the event manager had two laptops with him, one of which he gave to me for showcasing Lambda Wars, and another laptop was brought by a collegue for a similar reason. This allowed me to host a small tournament for two people to play.

This year

Now, what has changed this year is the people who organize the event in general. That is, the managers.
This year, the organization didn't go smooth, and even though I did receive an approval, the approval was so late, I only had less than 24 hours left to fill out the necessary documents + figure out what hardware I would be bringing with me at the same time. The worst part about it is the fact that I don't have a laptop that I could use and was hoping that the managers would provide the necessary equipment for that cause. This is where they denied my request.

I'm sad to say this, but we will have to pass on this year at least.

But there is still hope tho! Another event hosted in either St. Petersburg or Moscow in August this year will take place. This event wont be as big as VK Fest, definitely, but will be made only for the gaming community.
So yeah, all's not lost!

Now moving to the next topic...

I decided to make&post memes genuinely for the community to enjoy the content, in case I can't or don't want to work on the game at some point. So I thought it would be good to maintain the activity and probably share some laughs here, which would seem totally fine to me. This doesn't ping anyone, and you only see news pop up. If they were to flood someone's news feed, sure, that would be an issue but, thankfully, this doesn't happen on Steam News. Some people still disagree, however. This is why I decided to make the following:

A small poll

I saw some comments under some of the memes that I post here sometimes, and decided to see what the community thinks about it. I opened a poll (because you can't do that on Steam, you see).

That's all.
6 comments Read more

About This Game

Lambda Wars is a free multiplayer Source Engine modification for Alien Swarm set in the Half-Life 2 universe that brings the war between mankind and their brutal Combine overlords to a traditional real-time strategy (RTS) setting. Lead the uprising as a commander of the Resistance or crush the rebellion as an overlord of the Combine, with both factions featuring a full host of units, abilities, buildings, research and defenses. Lambda Wars features full-fledged RTS gameplay and a robust RTS interface and is focused on multiplayer but strategic AI opponents and dedicated singleplayer missions are also included.


  • Classic real-time strategy (RTS) gameplay in the Half-Life 2 world
  • Multiplayer support and game lobby including spectator mode
  • Wide variety of maps for up to 8 human or AI players
  • Play as either Combine or Resistance (and also Antlions in Sandbox mode)
  • Full unit tech tree that allows you to command everything from Manhacks to Striders
  • Full-fledged RTS interface and HUD with everything from minimap and fog of war to unit and production building groups
  • Build production and research facilities to requisition better units and unlock abilities and upgrades
  • Defensive structures, turrets and mines help defend your headquarters and vital resource points
  • Multiple game modes
  • Singleplayer missions, tutorial map and offline AI skirmish mode

System Requirements

    • OS: Windows 7
    • Processor: Dual core from Intel or AMD at 2.8 GHz / Quad-Core Intel at 1.33 GHz
    • Memory: 1 GB RAM
    • Graphics: Intel HD Graphics, nVidia Geforce 8600GT, AMD Radeon HD2600 or better
    • DirectX: Version 9.0c
    • Storage: 4 GB available space
    • Sound Card: DirectX 9.0c compatible sound card
    • Additional Notes: These are the minimum requirements to be able to run on lowest settings
    • Memory: 3 GB RAM
    • Additional Notes: Being able to go easy on us devs for all the bugs and glitches :(
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