Complex is a free advanced game modification based on Relic Entertainment's Homeworld 2 game engine, free of any business directive, developed with passion and hard work, for experienced RTS players only.
In a world of simplified games often under pressure to do well commercially, our challenge has been to create this ambitious project, for those who want more from a modern videogame.
Complex series, actually counts more then 5.000.000 downloads and up to 3000 contacts per days.


Image RSS Feed Latest Screens
Proven: It is possible to make Campaign work CONCEPT ART Concept: AT Field
Blog RSS Feed Post news Report abuse Latest News: Complex 9.1

5 comments by Beghins on Dec 22nd, 2013

Many additions to the game, new units, new features and better graphical aspect, but the more important improvements have been done on stability, gameplay and performance.
Every duplicate ship/subsystem have been removed, redundant functions cleaned, lagging scripts revisited, a lot of bugs fixed.

The game has been balanced to reach the better space battle experience.
I hope you enjoy all this work!

Complex 9.1
Complex 9.0.1
Full LOG here.

About the future of Complex, considering that Gearbox is working on the new Homeworld, this release is the last one for Homeworld 2, not the last one for Complex.
If the new engine will be great the new Complex will be on the way.

Thanks to everyone who's following Complex for so long time, Beghins.

Media RSS Feed Latest Video
Downloads RSS Feed Latest Downloads
Complex 9.1

Complex 9.1

Nov 14, 2013 Full Version 51 comments

This is the first update of the 9 series, and the decade for the Complex Mod.

Complex 8.4.3

Complex 8.4.3

Mar 25, 2013 Full Version 36 comments

Complex 8.4.3 released, a new massive update for the project Complex, a lot of new features and improvements in this release.

Homeworld 2 Complex 7.4.4

Homeworld 2 Complex 7.4.4

Dec 20, 2009 Full Version 17 comments

Complex is a free advanced game modification based on Relic Entertainment's Homeworld 2 game engine, free of any business directive, developed with passion...

Post comment Comments  (40 - 50 of 590)
DocDI99 Mar 5 2014, 1:30pm says:

If you have voices for units like in Advance mod you will upgrade your mod to A+
(personally i still dont like the fighter default units variations and i know all of that can be changed to a more SF look)

+1 vote     reply to comment
danielcastro22 Feb 28 2014, 10:22am says:

Ion Cannon from the heavy battle ships is to strong.
I think to lowdown power of this ion guns

+2 votes     reply to comment
Guest Feb 8 2014, 2:34pm says:

This comment is currently awaiting admin approval, join now to view.

Guest Jan 16 2014, 12:05am says:

This comment is currently awaiting admin approval, join now to view.

deathwish36 Jan 8 2014, 7:39pm says:

Can someone message me on how to install and run the mod. I try to lanch the game from Desura and it just crachers I had it running and working two year age but i think it was Complex 5

+1 vote     reply to comment
Beghins Creator
Beghins Jan 9 2014, 12:01pm replied:

Don't use desure, download the file from here. Complex doesn't need desura to be installed.

+1 vote   reply to comment
lordlandraid Jan 2 2014, 5:08am says:

Will be donating once I get paid. Been playing this mod since it was in version 5. Long live Complex!!!

+2 votes     reply to comment
Guest Dec 28 2013, 4:03pm says:

This comment is currently awaiting admin approval, join now to view.

ZXZX10000 Jan 1 2014, 2:14pm replied:

Also, should desura be updating to the latest version as my copy is running 7.1.4 instead of 9.1 that is being advertised

+3 votes     reply to comment
OneTime5O Jan 2 2014, 6:09am replied:

Windows 7 said it installed incorrectly, so tried running before Windows reinstalled it and afterwards, but the Desktop Icon only starts the vanilla HW2.

Target properties match the .big file in

C:\Program Files\Sierra\Homeworld2\Data

Target properties are

"C:\ Program Files\ Sierra\ Homeworld2\ Bin\ Release\ Homeworld2.exe" -mod Complex91.big -hardwarecursor -overridebigfile"

Tried removing 'overridebigfile' but nothing. Removed the other mod files, didn't change the screen resolution when prompted.

Any help would be appreciated team!

+1 vote     reply to comment
OneTime5O Jan 2 2014, 6:20am replied:

Ignore that. Apparently the game is installing it to the wrong place. If anyone else has this issue, you need to ensure the Complex .big file is moved to the secondary data folder in

C:\Program Files\Sierra\Homeworld2\Bin\Release\data

+1 vote     reply to comment
Post a Comment
click to sign in

You are not logged in, your comment will be anonymous unless you join the community today (totally free - or sign in with your social account on the right) which we encourage all contributors to do.

2000 characters limit; HTML formatting and smileys are not supported - text only

Homeworld 2 Icon
Developed By
Send Message
Official Page
Release Date
Released Dec 2010
Mod Watch
Track this mod
Community Rating



504 votes submitted.

You Say


Ratings closed.

Highest Rated (27 agree) 10/10

The best Mod in history of this game.

Dec 6 2010, 8:45am by JastrzÄ…b

Lowest Rated (14 agree) 1/10

Stupid and useless. It isn't anything like Homeworld.

Apr 27 2011, 9:29pm by p2thewind45

Real Time Strategy
Single & Multiplayer
Embed Buttons

Promote Homeworld 2 Complex on your homepage or blog by selecting a button and using the embed code provided (more).

Homeworld 2 Complex Homeworld 2 Complex
Homeworld 2 Complex
Last Update
1 year ago
1,431 members