Lambda Wars is now a free standalone mod on Steam: Steam Store (December 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.

As of December 2014, we have released the game on Steam as a free, standalone mod. This means you DO NOT require Half-Life 2, Alien Swarm or any other Source game to download and play Lambda Wars on Steam.

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

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Blog RSS Feed Report abuse Latest News: Lambda Wars Beta HL2 RTS Mod Released For Free on Steam

8 comments by Ennui on Dec 9th, 2014

We are proud to announce that Lambda Wars is now officially available for FREE to download on Steam! For those of you unfamiliar with us, we are a completely free Half-Life 2 real-time strategy (RTS) mod formerly known as HL2: Wars and have been in development for over six years with public releases throughout that time. This is our first official Steam release after successfully passing through Greenlight in January 2014.

Our Steam beta release brings with several major changes from our last version, most notably a complete overhaul of the in-game menu UI systems and revising our multiplayer matchmaking system to take full advantage of everything Steamworks offers. On top of that we have also spent a lot of time as usual on improving the mechanics and gameplay balancing and fixing a litany of bugs large and small. Below you can see some of the major UI work that has gone into this release:

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You can go ahead and download it free on Steam right now by visiting our Steam Store page - thanks to Valve's fantastic support of free mods we are happy to announce that you do not need to own HL2 or any other Source games to play this for free! If you have any problems please post in the support section of our forum community.

Why still beta, you ask? Before we release Lambda Wars 1.0 we want to hear YOUR feedback. What works? What doesn't? What could be improved or added or removed? We want to hear from YOU, whether it's on our Steam Community Hub, our discussion forum, Facebook, Twitter or ModDB profiles. If you like what you see, do us a huge favor and spread the word!

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We want to take this moment to thank all of the loyal players who have provided us with feedback over the years, as well as everyone who supported and voted for us in our Greenlight bid and got us into the top ten mods of the year in 2008 and 2010 for ModDB's MOTY vote. Most of all, thanks to Valve Software for being supportive and permissive and allowing us to use their IP and materials to build and distribute a RTS mod of the Half-Life universe we all love so dearly.

Download Lambda Wars for free now on the Steam Store. If you like it, show it by supporting us on Steam Community, our discussion forum, Facebook, Twitter and ModDB and by providing your valuable feedback, bug reports or support requests on our official community forum.

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Lambda Wars 2.3.6 FULL EXE

Lambda Wars 2.3.6 FULL EXE

Jun 9, 2014 Full Version 16 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  (60 - 70 of 1,969)
ceu160193
ceu160193 Jun 18 2014, 1:50pm says:

Performance issue: if Strider gets many Antlions on his leg, there are horrible lags.

+1 vote     reply to comment
Dark1Isaac
Dark1Isaac Jun 18 2014, 12:20pm says:

single player? :S

+1 vote     reply to comment
yakovlev999
yakovlev999 Jun 18 2014, 11:32am says:

i got "paged memory out" error when i start the game.. can someone help me?

+1 vote     reply to comment
Sander Creator
Sander Jun 18 2014, 1:17pm replied:

Can you give the exact error? Seems unlikely that's the message. Please also verify you can actually start Alien Swarm.

+1 vote   reply to comment
yakovlev999
yakovlev999 Jun 18 2014, 2:16pm replied:

Here is my error Massage.

I1257.photobucket.com

i followed the instructions on the site but the lines what i must delete its not even there.

Alien Swarm start and work perfectly

my config:
Intel Pentium 4 HT 2,8 Ghz
2GB Ram
ATI X1650 Pro

+1 vote     reply to comment
Sander Creator
Sander Jun 18 2014, 2:55pm replied:

There's an article about it on Steam Support KB: Support.steampowered.com

Note however your system is below the minimum requirements for Alien Swarm (and the requirements for Lambda Wars will be a bit higher too).

+2 votes   reply to comment
yakovlev999
yakovlev999 Jun 18 2014, 3:08pm replied:

yeah i followed the instructions but the lines what i need to delete aren't there so i got stuck. (win xp)

but if the sys req is a little bit low the game must load at least the main menu. i can run cs:go with stable 20-23 fps on med graph (alien swarm too) :)

do you know any other solution for the problem? I would very grateful for that :)

+2 votes     reply to comment
Sander Creator
Sander Jun 18 2014, 3:26pm replied:

Try adding one of the following commands to your launch parameters:
-disabledeferred
-disablecef (the main menu won't be shown in this case, but it's interesting to see if it loads without error)

0 votes   reply to comment
yakovlev999
yakovlev999 Jun 18 2014, 4:13pm replied:

its not worked i got the same... :( the game is even dont try to load. After couple of moments of the start and i got the crash.

+2 votes     reply to comment
ceu160193
ceu160193 Jun 15 2014, 5:18am says:

Some suggestions:
- Combine should lose if Citadel(s) destroyed and no alive stalkers left.
- Rebels should be defeated if all Billets and HQ destroyed, with no alive engineers left.
- Stalkers and engineers can capture enemy building (except defensive ones), if no enemy units nearby.
- Transport units: APC and Dropship for Combine, Buggy and Airboat for Rebels. For balance reasons Dropship won't pick up Strider.
- Weapon upgrades (AR2 and Shotgun) should unlock production of soldiers with those weapons in Garrison/Barracks.
- Rebel Medic should require Triage Center to unlock.
- Rebel Engineer should drop scrap at any building, not only HQ.
- Combine Bunker: like Aid Station, but without healing. Healing can be done with Regeneration Post next to bunker.
- Rebel Medic inside Aid Station can heal units near Aid Station without leaving one.
- Barricades should be walls, with ability to select start and end points for construction.
- Units inside buildings (even those with rooms) should be hidden from scan or observers.
- Penetrating shots for both Combine Sniper and Veteran.
- Slightly higher shooting range for Veteran, so he can shoot units without being seen by them.

+2 votes     reply to comment
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Lambdawars.com
Release Date
Released Sep 25, 2012
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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

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Real Time Strategy
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War
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