Current Lambda Wars release version: Beta 2.3.6 (June 2014)

Lambda Wars (formerly called Half-Life 2: Wars) brings the struggle between the human resistance and their Combine overlords to a multiplayer real-time strategy setting.  The Lambda Wars beta only requires Alien Swarm installed to play.  It features 3 multiplayer game modes: Sandbox, Annihilation and Overrun, showcasing the Rebels and Combine playable factions and a full-fledged RTS interface and HUD. There is also a singleplayer tutorial and a handful of singleplayer missions.

The Lambda Wars requires Alien Swarm to play (free).

For questions, comments, suggestions, and support for any of our past or upcoming betas, visit our forums.

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Blog RSS Feed Report abuse Latest News: Lambda Wars Beta 2.3.6 Released

1 comment by Ennui on Jun 15th, 2014


Hi folks! We're back with the latest update for Lambda Wars: Beta 2.3.6. This is a pretty minor release that mostly focuses on bug fixing, updating the internal version of Python and some other small improvements to game balance, sound and visuals. You can read the full changelog at the end of this post. This release does not have an incremental patch, so you'll have to download the full EXE or zip file below (approximately 1gb) to install.

Stay tuned though, because as you remember we were Greenlit early this year and we're still moving steadily towards our inaugural release on Steam later this year. More details on that soon!

Recruiting a Gameplay UI Designer!

We're still looking for a gameplay UI designer to help us rebuild the interface (menus/lobby first and eventually the ingame interface) in HTML5 via Chromium Embedded Framework. If you're a visual designer adept with CSS and JS and have a knack for UI/UX get in touch via our recruitment forum.

Lambda Wars 2.3.6 Changelog
Improvements and Balance:
* Reduced Strider's Dark energy cannon damage radius from 200 to 100
* Reduced Strider's Dark energy cannon cooldown from 30 to 20 seconds
* Reduced black and regular headcrabs HP to 80
* Reduced fast headcrabs HP to 60
* Unit selection interface: control + left click unit type in hud unit selection will filter selection on that type, while control + right will do the inverse.

* Add combine victory and defeat effects

* UPDATED: hlw_base4 (flora)
* UPDATED: hlw_meltdown (flora, various)
* UPDATED: hlw_slums (flora)
* UPDATED: hlw_synth (various)
* UPDATED: hlw_village (flora, various)
* UPDATED: hlw_waste (flora, various)
* UPDATED: or_base4 (flora)
* UPDATED: or_hill (flora)
* UPDATED: or_washedaway (flora)

CPU Player:
* Rebel CPU Player now collects scrap

* Improve cleanup of stuck enemies
* Headcrab cannisters are no longer launched between waves
* Scaled down bounding box of Headcrab Poison boss to prevent navigation issues on or_trapped

* Potentially broken buildings when the client requested a full game update due packet loss
* Combine Elite AR2 alt fire ability firing at wrong target due faulty aim code
* CPU player placing too many barracks, while not producing any units
* CPU player is now always ready in overrun
* Incorrect unit navigation when jumping off cliffs/edges (e.g. getting stuck)
* Headcrabs flying up to an unreachable location after being spawned from a killed zombie (in particular or_base4)
* Overrun game mode endless wave type not working
* Overrun game mode waves not progressing
* Strider's Dark energy cannon ability not taking resources
* Fix fog of war incorrectly revealed around control points in some cases due mismatch between server and client parameters
* Tooltips of units and abilities not disappearing on machines with a low framerate
* Upgrade energy fields of medic being shared with saboteur and scout, due which they can stay invisible forever
* Fortification of control point not removed after becoming neutral due a player being defeated
* When a zombie dies "chopped", it would potentially not be removed and become invisible and not solid

* Add name and description for "Ungarrison All" Ability
* Updated Python from 2.7.6 to Python 3.4.1
* Updated spanish translation, thanks to JLMCYT

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Lambda Wars 2.3.6 FULL EXE

Lambda Wars 2.3.6 FULL EXE

Jun 9, 2014 Full Version 13 comments

Install Instructions: 1. Run the Installer and follow the instructions. 2. Restart steam. 3. "Lambda Wars" should now appear in your games list. If you...

Lambda Wars 2.3.6 FULL 7z

Lambda Wars 2.3.6 FULL 7z

Jun 9, 2014 Full Version 2 comments

Install Instructions: 1. Extract contents into your sourcemods folder (default location: C:\Program Files (x86)\steam\steamapps\sourcemods). 2. Restart...

Lambda Wars 2.3.5 7z PATCH

Lambda Wars 2.3.5 7z PATCH

May 10, 2014 Patch 4 comments

Install Instructions: 1. Extract contents into your sourcemods folder (default location: C:\Program Files (x86)\steam\steamapps\sourcemods) and overwrite...

Lambda Wars 2.3.5 FULL EXE

Lambda Wars 2.3.5 FULL EXE

May 10, 2014 Full Version 7 comments

Install Instructions: 1. Run the Installer and follow the instructions. 2. Restart steam. 3. "Lambda Wars" should now appear in your games list. If you...

Lambda Wars 2.3.5 FULL 7z

Lambda Wars 2.3.5 FULL 7z

May 10, 2014 Full Version 0 comments

Install Instructions: 1. Extract contents into your sourcemods folder (default location: C:\Program Files (x86)\steam\steamapps\sourcemods). 2. Restart...

Lambda Wars 2.3.4 FULL 7z

Lambda Wars 2.3.4 FULL 7z

Feb 23, 2014 Full Version 1 comment

Install Instructions: 1. Extract contents into your sourcemods folder (default location: C:\Program Files (x86)\steam\steamapps\sourcemods). 2. Restart...

Post comment Comments  (0 - 10 of 1,938)
kal_ell Sep 17 2014, 9:41pm says:

How to close the gate on the map hlw_antarctica?

+1 vote     reply to comment
Demotana Sep 15 2014, 4:30am says:

Love it

+1 vote     reply to comment
tezaar Sep 13 2014, 8:46pm says:

Do I only need ALien Swarm to get 2.3.6 running?

+1 vote     reply to comment
Sander Sep 14 2014, 2:26pm replied:


+1 vote     reply to comment
Guest Aug 18 2014, 7:44pm says:

If you release a spanish version, im going to love this game

+1 vote     reply to comment
GecoGaming Aug 12 2014, 3:28pm says:

Its nice to see a more active community for Alien Swarm. Good Luck on developing!

+1 vote     reply to comment
Alphadios Aug 2 2014, 3:35am says:

Still a better RTS than the ****** StarCraft II

-4 votes     reply to comment
D.E.G Aug 8 2014, 4:09am replied:

Atleast better than starcraft but not better games than c&c games(westwood).

+1 vote     reply to comment
JjForcebreaker Jul 5 2014, 3:20pm says:

Awesome mod. Keep up the good work.

+4 votes     reply to comment
ToXiCTeRaN Jul 4 2014, 2:29pm says:

I cant seem to get the menu to show, any one know of a fix for that?

0 votes     reply to comment
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Release Date
Released Sep 25, 2012
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1165 votes submitted.

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Highest Rated (14 agree) 10/10

Very original, very fun, and i see a LOT of great potential for this mod in the long run.

Nov 27 2010, 2:33pm by Heroman117

Real Time Strategy
Single & Multiplayer

Latest tweets from @lambdawars

The Lambda Wars facebook page is pretty sad... care to give us a like?

Feb 6 2014, 9:56pm

Lambda Wars Beta 2.3.2 released! Details and download links here:

Feb 6 2014, 5:41pm

Interested in helping us beta test the development build? Download the build and sign up on our forums at

Jan 23 2014, 4:28pm

LAMBDA WARS: Web: Facebook: @ModDB: Greenlight:

Jan 13 2014, 4:52pm

@klerg_denver <3

Jan 13 2014, 4:50pm

Give us your suggestions! What needs to change to make Lambda Wars better?

Jan 10 2014, 10:46pm

We finally made a Facebook page and we'd love it if you helped us get it off the ground and give us a Like!

Jan 9 2014, 4:21pm

In case you missed it yesterday, Lambda Wars has been successfully Greenlit and we're coming to Steam for FREE!

Jan 8 2014, 11:24am

@rockpapershot alec meer did a couple articles on our mod (then called HL2 Wars) back in 07-08. we made greenlight!

Jan 7 2014, 3:40pm

RT @brostoevsky: WOW my HL2 mod @lambdawars just got Greenlit with over 30,000 yes votes and we'll be available on Steam soon!

Jan 7 2014, 3:39pm

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