Operation: TREBUCHET was the last major UNSC offensive against the human insurrection before first contact with the Covenant empire. Our mod will focus on the struggles of the common soldier, rather than the elite spartan warriors, during that offensive. Experience the Halo universe from a new, brutal perspective. For the most up-to-date info regarding the mod and the community, monitor the official subreddit, r/OperationTrebuchet.

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RSS Articles

The fellows who hosted the first Operation Trebuchet, Foxgaming, are hosting their server again. As of this writing, this is currently the only known Optre sever up since the 26th went down.

If you are interested in playing Optre online, the IP for the new Fox Gaming server is: 188.165.227.100

Port : 2302

They are currently running Zeus with 27 open slots. They have also heavily optimized the server to be a bit more forgiving on your frame rate. Bring your friends and have some fun!

THIS SERVER REQUIRES ONLY THE BASE OPERATION TREBUCHET (NO FIRST CONTACT).

OPTRE: First Contact v0.1 Release

OPTRE: First Contact v0.1 Release

News 24 comments

We are glad to announce a pre-alpha release for the Covenant faction!

A List of Planned Assets

A List of Planned Assets

News 11 comments

This list is a working list, that means nothing is set in stone and can be added or removed at any point. Hopefully this will give you some insight on...

RSS Files
Operation TREBUCHET v0.16.1

Operation TREBUCHET v0.16.1

Full Version

The latest patch for Operation: TREBUCHET. This hotfix is aimed towards fixing some more critical bugs and issues and doesn't contain any new content...

Operation TREBUCHET v0.16

Operation TREBUCHET v0.16

Full Version 1 comment

The latest patch for Operation: TREBUCHET. This update includes mostly fixes and tweaks, but also some new weapons and attachments. Check the changelog...

Operation TREBUCHET v0.15

Operation TREBUCHET v0.15

Full Version 3 comments

The latest patch for Operation: TREBUCHET. This update includes two new terrains, several new vehicles, and many tweaks and fixes. Check the changelog...

Operation: TREBUCHET v0.14

Operation: TREBUCHET v0.14

Full Version 15 comments

The latest patch for Operation: TREBUCHET. This update includes some new vehicular additions and a heap of fixes and tweaks. Check the changelog included...

Operation Trebuchet V0.14 Soundtrack

Operation Trebuchet V0.14 Soundtrack

Music 4 comments

Operation Trebuchet V0.14 Soundtrack This includes all the of the original work. This does not include the remixes. Total length of the soundtrack: 69...

Operation: TREBUCHET v0.13.1 (Full)

Operation: TREBUCHET v0.13.1 (Full)

Full Version 17 comments

The latest patch for Operation Trebuchet. This release features some of the more important bug fixes that bring the mod up to arma 3's nexus update standards...

Comments  (0 - 10 of 408)
giansalvador745
giansalvador745

Why when i open the game with the mod it just says bad file?

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VynalDerp
VynalDerp

This version isn't updated to the most recent one. The steam workshop mod is, I think, the most supported.

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HotShot217
HotShot217

First of all I'd like to say that this is an amazing mod and I play it all the time. Second, could you please make SMGs and LMGs available in the personal arsenal? I'd really appreciate it, thanks!

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VynalDerp
VynalDerp

They are. You may have to have a module or something to add all the OPTRE weapons and such.

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lordniti2
lordniti2

Star Wars Oppositon looks amazing!

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AubeSangante
AubeSangante

Whant new ? Go to reddit Reddit.com

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koolerpure
koolerpure

love this mod so much but the lack of communication between the developers and us is saddening because i dont want this mod dead nor wait 2 years for another small but awesome update well after arma 3's player base falls

Reply Good karma Bad karma+4 votes
VynalDerp
VynalDerp

Well, I doubt Arma 3's playerbase is going to die even after two years, if only because of the absolutely insane amount of mods.

Reply Good karma Bad karma+3 votes
camwars
camwars

Any chance on an update for First Contact?

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VynalDerp
VynalDerp

I honestly doubt they'll be updating this page much more. I'd say check steam workshop. Probably hundreds of discussions asking that question

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Community Rating

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9.7

63 votes submitted.

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Highest Rated (6 agree) 10/10

This mod is great! Halo is my all-time fav game and ArmA 3 falls in at third, so the two combined is great. Only issue is RC7 compatibility, which is being fixed.

May 29 2015 by kirigaya238

Twitter

Latest tweets from @optrebuchet

We just published a new UPLINK @arma3official @Halo Reddit.com

Oct 16 2017

We just published a new UPLINK with some details for the next update. @Arma3official @Halo Reddit.com

Oct 4 2017

We've just released an update for Operation: TREBUCHET. You can find it here: Reddit.com

Aug 1 2017

We've got a new UPLINK for all our fans patiently awaiting the next update. @Arma3official @Halo Reddit.com

Jun 5 2017

We would like you to meet, Sage Youtube.com

Oct 4 2016

v0.14 is out! Here's a trailer to celebrate and get you hype! @Arma3official @Halo Youtube.com

Sep 24 2016

Congratulations to the Installation 01 team. Keep up the great work. T.co

Aug 24 2016

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Operation: TREBUCHET
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