Single Player First Person Shooter Maps and Mods for Half-Life 1, 2 and Episodes 1, 2 and 3

You play a soldier working their way through the Black Mesa Research facility at the same time as Adrian Shepard.

Basic Details
  • Title: Operation Firesweep
  • File Name: hl1-sp-operation-firesweep-demo.7z
  • Original File Name: OFSDemo_Final.zip
  • Size : 13.1Mb
  • Author: Operation: Firesweep Team
  • Date Released: 15 April 2004
Important Note

Although this is a Half-Life mod, it has the appearance of Opposing Force.

PlanetPhillip Download Servers
Installation Instructions
  • Copy the OFS folder into your Half-Life folder.
  • Restart or start Steam.
  • Operation Firesweep Demo should now be listed in your Library tab.
Teaser Trailer

Screenshots

Click on the thumbnails below to open a 1024 pixel wide image.
WARNING: The screenshots may contain spoilers.

Single Player First Person Shooter Maps and Mods for Half-Life 1, 2 and Episodes 1, 2 and 3
Single Player First Person Shooter Maps and Mods for Half-Life 1, 2 and Episodes 1, 2 and 3
Single Player First Person Shooter Maps and Mods for Half-Life 1, 2 and Episodes 1, 2 and 3
Single Player First Person Shooter Maps and Mods for Half-Life 1, 2 and Episodes 1, 2 and 3
Single Player First Person Shooter Maps and Mods for Half-Life 1, 2 and Episodes 1, 2 and 3
Single Player First Person Shooter Maps and Mods for Half-Life 1, 2 and Episodes 1, 2 and 3
Single Player First Person Shooter Maps and Mods for Half-Life 1, 2 and Episodes 1, 2 and 3
Single Player First Person Shooter Maps and Mods for Half-Life 1, 2 and Episodes 1, 2 and 3
Single Player First Person Shooter Maps and Mods for Half-Life 1, 2 and Episodes 1, 2 and 3
Single Player First Person Shooter Maps and Mods for Half-Life 1, 2 and Episodes 1, 2 and 3
Single Player First Person Shooter Maps and Mods for Half-Life 1, 2 and Episodes 1, 2 and 3
Single Player First Person Shooter Maps and Mods for Half-Life 1, 2 and Episodes 1, 2 and 3
Single Player First Person Shooter Maps and Mods for Half-Life 1, 2 and Episodes 1, 2 and 3
Single Player First Person Shooter Maps and Mods for Half-Life 1, 2 and Episodes 1, 2 and 3
Single Player First Person Shooter Maps and Mods for Half-Life 1, 2 and Episodes 1, 2 and 3
Single Player First Person Shooter Maps and Mods for Half-Life 1, 2 and Episodes 1, 2 and 3
Single Player First Person Shooter Maps and Mods for Half-Life 1, 2 and Episodes 1, 2 and 3
Single Player First Person Shooter Maps and Mods for Half-Life 1, 2 and Episodes 1, 2 and 3
Single Player First Person Shooter Maps and Mods for Half-Life 1, 2 and Episodes 1, 2 and 3
Reader Recommendations
10 recommendations, average score: 4.6 (out of 5), standard deviation: 0.24
Total Downloads

Please note: These statistics are valid from December 2010

  • 772
    Overall
  • 0
    Today
  • 3
    Last 7 days
  • 12
    Last 30 days
  • 167
    365 days
Published

10th May 2009

Categories
Tags
Mod not working?
An update by Valve to some Source engines has caused a number of mods to stop working properly and give errors. Please visit my Get Mods Working post for more details.
Jump to a review
Play It Now!Play It Now!Play It Now!Play It LaterPlay It LaterPlay It LaterPlay It Now!Play It Now!Play It Now!Play It Later
Get the most from the comments
Follow these comments by RSS feed
21 Comments
  1. Play It Now!

    I really enjoyed this one. A few puzzles, a variety of combat situations and some nice level design. I particualrly enjoyed the section shown in image 12.

    The A.I. semed a little strange at times with some enemies just standing still but don't forget this was a demo, so things would have improved.

    It's a shame that this was never finished.

    5 Words Or Less Review
    Nice trip down memory lane

  2. 23-down

    10th May 2009

    Play It Now!

    Agreed a fantastic mod. Try it out people!

  3. it crashs and loops when I reload, I kill the first headcrab and zombie but at anytime I reload it locks up and audio goes into a loop? playing open gl and steam. any ideas?
    I am really itching to kill everything hehe, am willing yet unable. sniffle sniffle….

  4. Anon-00022

    11th May 2009

    Play It Now!

    awesome mod.

    …Is this still being worked on, I just noticed that the demo was released in 2004

  5. i dont think it likes vista, tried software mode and different settings. the 9m kills it, the m16 kills it, the desert eagle works till I run out of ammo. oh, well.maybe one day.

  6. 23-down

    11th May 2009

    try direct 3D i'm also on Vista and it runs fine for me. ;)

  7. Mel 914 comments

    11th May 2009

    Play It Later

    If this demo was released in 2004 where has it been for last 5 years?

    It's a shame it was never finished, as it stands it goes no where and far too short to have much meaningful gameplay. I am glad I did not play is back in 2004 being so full of promise I would have felt right pissed-off waiting all this time for the completed mod.

    Give it a play through for old time sake.

  8. Andrew

    11th May 2009

    Play It Later

    Nostalgia isn't what it used to be. The level design was somewhere between very good and excellent for me.
    However, I found the whole thing was kinda "ordinary".

    What I'd like to see is an over-the-top retro-bizarre nod to good ole HL1 – perhaps a group of drug-crazed pipe-smoking nuns on the rampage (this is just an example – mutant giraffes would serve equally well).

  9. hey your were right d3d worked even at 1024. I never thought about that setting. thanks.
    I have killed many and many more will die. but, they might have to wait till the weekend. hehe.

  10. NOTE! Phillip the download Link to direct download is broken. pak0.pak comes ruined, every time its downloaded. Gonna go check filefront now. Maybe that'll work

    • I just tested the PP direct downlaod and everything was fine for me. Did it break when you opened the file or when you tried to play it?

  11. andyb 934 comments

    13th May 2009

    Play It Later

    Download works for me.This demo is pretty good for its age.A bit confusing in places.Good for a rainy day play.

  12. Mel 914 comments

    14th May 2009

    andyb, do you have a lot of rain where you are?

  13. andyb 934 comments

    14th May 2009

    Why yes I do :p It's raining now so I'm about to try another map

  14. Gypsy Jim

    17th May 2009

    Play It Now!

    Like Philip said, it's a real shame this wasn't finished, but it was fun for what it was.

    In this post HL2 world it's nice to see that HL1 mods can still be really enjoyable…..

  15. [OFC]Petrick

    24th May 2009

    Play It Now!

    Nice little demo, but so short :( Would be nice to know what happened after that demo was released.

  16. Rolando

    25th May 2009

    are you sure that this mod wasnt t this finished? because in the mod site there are no new about that

  17. Play It Now!

    it was fun even if it was hard to figure out how to get it to play. I will say, I left nothing alive. a job well done. hehe

  18. I'm actually the level designer from this mod's dev team (you dont have to believe me but its true), I built this demo to try muster some interest from developers because my development team abandoned it for reasons I don't fully understand.

    Now that I see that people actually enjoyed it, I'm very sad we were unable to finish, I built a bunch of levels for it, including Black Mesa Hospital, Nursury, parking lots blah blah

    Very glad you guys liked it and once again very sorry it was never finished, at that time (16 years old) I just didnt have the energy to try finish it myself.

  19. Technic 474 comments

    10th January 2012

    Play It Later

    Pretty demo of an never-finished mod it seems, right guys?
    I liked the OF style much, but it really seemed to me that this is indeed only demo, showing not the best of the maybe-complete-mod …someday

    Pro's:
    -Decent design
    -Good balance
    -Nice puzzles

    Con's:
    -Less combat
    -Only indoor (some poor designs like grey walls only)

  1. C:13745 » Podcast 17

    19th May 2009

    […] Operation Firesweep (HL) […]

Post a comment

Recommendation System

You must be registered and logged in to use the Recommendation System.
Why not register now? It's free and easy. If you are already registered then please login.