Half-Life: Opposing Force

Half-Life: Opposing Force
Developers: Gearbox Software, Valve Publisher: Sierra Studios Platforms: Windows, Mac OS X, Linux Released in US: November 18, 1999 Released in EU: November 29, 1999 This game has unused animations. This game has a hidden developer message. This game has hidden developer credits. This game has unused graphics. This game has unused models. This game has unused items. This game has unused sounds. This game has unused text. This game has regional differences. This game has revisional differences. This game has a prototype article

This page is loooong... Consider grouping related content into additional subpages to ease readability.

To do: A Press Demo has been found The main demo of Half-Life: Opposing Force, counts as a prototype as well since it also came prior to the release version, with certain differences as well. Unused sitting animations in the model for the grunt ally entity, one of which consists of the grunt sleeping upright. Might be related to an unused voiceline, see below.

Half-Life: Opposing Force is an expansion to Half-Life. You are Adrian Shephard, one of the soldiers sent to "silence" Black Mesa's staff. However, your transport plane is shot out of the air before you can land, and you awaken soon before the military pulls out. Trapped with stranded fellow soldiers and what remains of Black Mesa's staff, you must escape the facility while fighting off against the Black Ops seen in the first game (now augmented with male troopers as backup) and the mysterious Race X. Thankfully, you have the power of friendship a lot of powerful new weapons to help deal with the new foes.

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Prototype Info

Unused Models

Black Ops Osprey

The Black Ops were to have their own V-22 Osprey at one point. It was cut, but the model for it is still in the game.

It also has its own unique gib models.

• 

  Front.

• 

  Back.

Destroyed Black Ops Osprey

The Black Ops Osprey also has a "dead" variant that is also unused. It looks the same as the "dead osprey" model that appears throughout the game, but with the Black Ops coloring on it.

• 

  End of crash animation.

Dead Gordon Freeman

The model deadhaz.mdl contains an unused variant with Gordon's head instead of the generic HEV Suit helmet.

Unused Weapons

Flash Grenade

An item model for an unused Flash Grenade can be found in the game's files. The same flash grenade, albeit low detailed, can be found carried by Black Ops assassins.
This and the lack of a first person model could mean that these flash grenades were supposed to be a monster-only weapon used by the Black Ops assassins alongside frag grenades to further hinder the player.

Single Player .357 Magnum Revolver

While the .357 Magnum Revolver can be found in multiplayer mode, the player can only see its multiplayer version. The single player version (without the laser sight) can't be seen without cheats because it does not appear in the single player campaign.

Suppressed Pistol

The suppressor for the Pistol is still in the game, but some changes to the weapon's model have made it so that the suppressor floats underneath where the barrel is instead of being attached to it. The "add_silencer" animation is still there as well and has the same problem.

• 

  Add_silencer animation.

Unused Animations

Drill Instructor

The Drill Instructor has a few unused animations.

• bino_look: The Drill Instructor takes out a pair of binoculars (which can be found and added to his model) and looks through them.
• blow_whistle: The Drill Instructor takes out a whistle and blows on it. The whistle is in his model file and can be made so that he holds it.
• mega_yell: The Drill Instructor takes out a megaphone and begins yelling into it.
• mega_blow: A looped animation of the Drill Instructor yelling into a megaphone.

• 

  Bino_look.

• 

  Blow_whistle.

• 

  mega_yell and mega_bark.

Gonome

The Gonome has two unused animations.

• jump: The Gonome jumping.
• sohappy: An animation of the Gonome doing a silly dance where he claps while moving his body around. Named "veryhappy" in the WON version of the game.

• 

  Jump.

• 

  sohappy.

Hazmat Scientist

The Hazmat scientist contains all of the animations the Opposing Force Scientist has, but he doesn't use a majority of them.

• 

  Coffee.

• 

  Converse.

Human Grunt Zombie

The Human Grunt Zombie has an animation of it getting up from its stomach.

• 

  Getup.

Knife

The Knife has two unused animations.

• Charge: An animation showing Shepard pulling the knife back. Based on its name, it seems that the knife could be charged to do more damage, like with the Pipe Wrench.
• Stab: Adrian stabs with the knife. Seems to be related to the previous animation.

• 

  Charge

• 

  Stab.

Laser Trip Mine

The Laser Trip Mine's first person model still has the "arm1" animation that was unused in the original game as well.

• 

  Arm1.

Otis Security Guard

The Otis-type Security Guard contains several unused animations from the original Half-Life Security Guard, such as "stuffed_in_vent".

• 

  Pepsipush

• 

  Stuffed_in_vent

Security Guard Zombie

The Security Guard Zombie has all of the animations from the original Zombie. Quite a few of these are not used.

• 

  Freak (animation played by the Zombie in the chair in the original game's Unforeseen Consequences.)

• 

  Haulzombie (animation seen during Blast Pit in the original game.)

• 

  Vent_c1a3 (animation used at the start of We've Got Hostiles! in the original game.)

Half-Life's Human Grunts

The Human Grunts from the original Half-Life are still in the game and can be summoned with the cheat "impulse 76". Gearbox Software wisely decided against editing the original grunts from Half-Life as doing so would break original fan-made maps that feature them as enemies. Instead, a separate ally grunt entity was made using the Half-Life grunt model early in development before transitioning to new models made by Gearbox.

When spawned, they will attack friendly soldier NPCs but not Black Ops assassins because both use the same relationship table (code that handles how entities treat each other).

• 

  Half-Life Human Grunt attacking friendly soldiers.

• 

  Half-Life Human Grunt working with a Male Black Ops to kill the player.

Unused Map content

Boot Camp signature

In the first Boot Camp level (ofboot0), there is a signature by the mapper David Michael Mertz of Gearbox with the year of creation. It's only accessible by using noclip to get past two locked doors.

Half-Life's Xen

If the player follows Gordon through the portal at the start of We Are Not Alone, they will be teleported into the chapter Xen from the original game, but will fall into the void. However, with noclip, the level can be played, and a surprising amount of it is playable.

Since the player lacks the Long Jump Module, cheat codes are required to spawn it in (or the use of Noclip to fly straight to the center asteroid). With it, the player can trigger all of the assaults on the way to the main asteroid from the asteroid Gordon is on, reach the main asteroid, then kill all of the Houndeyes that roam the area and all of the items around the asteroid's perimeter (such as the Medkits). However, the ways to the center of the asteroid are blocked. Using noclip to see the core of the asteroid will reveal that the level designers stripped out everything inside it, making it impossible to activate the teleporter.

Of note is that the laser-shooting objects around the perimeter do not shoot lasers and cannot be destroyed.

• 

  Playing through Xen.

• 

  Blasting a Houndeye in Xen with the M249 SAW.

• 

  The end of the line.

• 

  The empty core room.

Multiplayer level signatures

Opposing Force's version of Boot Camp still has Dario Casali's signature, as seen in the original version of the level.

Unused Sounds

The file "sound/sentences.txt" contains a list of sentences allowing the game to easily call a sound, or string of sounds, for these purposes. This section includes both unused sentences and unused sound files without an associated sentence.

Barney Security Guard

Sound	Name	Transcript
	die	I don't wanna die!
	killme	No, don't kill me!

Scientist

Sound	Name	Sentence	Transcript
	SC_BETTERLUCK	scientist/of1a1_sc04	I'm afraid these troops aren't going to make it. I hope you have better luck out there, or I fear none of us will get through this alive.

Scientist-Security Conversations

Multiple unused lines for a scene in We Are Not Alone, involving a Displacer cannon teleport mishap between a Scientist and an Otis guard.

Sound	Name	Sentence	Transcript
	OT_TRANSPORTER	otis/of3a2_ot01	Huh! What's this? Some sort of transporter gun?
	SC_PUTDOWN	scientist/of3a2_sc01	Put that thing down! Why must you security guards always insist on playing with our prototypes.
	SC_NOTAGAIN	scientist/of3a2_sc02	Be careful. No, not again!

Otis Security Guard

Sound	Name	Sentence	Transcript
	OT_FINDMORE	otis/of1a1_ot04	Personally, I think if we could find more soldiers like you, we may come out of this a-okay.
	OT_TRUSTYA	otis/of2a6_ot01	I'm not sure I can trust you, but I don't know what else to do at this point. If you make it out of here, don't forget me.

Human Grunts

Sound	Name	Sentence	Transcript
	FG_WIPEDOUT	fgrunt/of3a4_fg01	Don't go in there, Corporal. That... monster... wiped out my squad!
	FG_TABLES	fgrunt/of5a1_fg03	Yeah, I'd love to turn the tables on those guys. Get my hands on one of those rifles, show them a thing or two about patience.
	FG_SUPRISE	fgrunt/of5a1_fg04	Hey, with you here now we have the element of surprise on our side. They're not expecting three of us. Heh heh heh.
	FG_EVAC	fgrunt/of5a3_fg01	Shephard! Oh man, we thought you made evac already!
	FG_FIREPOWER	fgrunt/of5a3_fg03	We may just have enough fire power to push through now. The very least, we can give it our best shot.

Intro

Sound	Name	Sentence	Transcript
	INTRO_FG4_L2	fgrunt/intro_FG19	What the hell kind of mission is this, anyway? We didn't even get a briefing before take-off.
300px	INTRO_FG4_L1	fgrunt/intro_FG18	Hey, you sleeping over there? You want me to fluff your pillow for ya?

Radio

Sound	Name	Sentence	Transcript
	RD_RALLYPOINT	radio/of1a6_rd01	All units, retreat to the rally point. I say, retreat to the rally point. (Medic!) Orders have been changed. We are pulling out. The safety of any units left behind cannot be guaranteed.

Military Police

Sound	Name	Transcript
	athority [sic]	Don't confuse your rank with my authority, Corporal.

Recruits

Sound	Name	Transcript
	sirtexas	Sir, Texas, sir!
	sirnosir	Sir, no, sir!

Drill Instructor

Different voice takes are used for common interaction quotes.

Sound Clip	File Name	Transcription
	DR_ADD01	drill/add01	You eyeballin' me, boy?
	DR_ADD02	drill/add02	Are you touchin' me, dirtbag?
	DR_ADD03	drill/add03	What is your major malfunction?
	DR_ADD04	drill/add04	It's time to kick ass and chew bubble gum, and I'm all out of bubble gum!
	DR_ADD05	drill/add05	I eat concertina wire and piss napalm!
	DR_ADD06	drill/add06	God has a hard-on for Marines.
	DR_ADD07	drill/add07	I eat Green Berets for breakfast!
	DR_ADD08	drill/add08	You had best get your head on straight, maggot!
	DR_ADD09	drill/add09	Soldier, you are all ate up!
	DR_ADD10	drill/add10	Son, I will break you down like an M16!
	DR_ADD11	drill/add11	I smell smoke! And where there's smoke, there's fire! You better move it, soldier!
	DR_ADD12	drill/add12	I will smoke you like a Cuban cigar!
	DR_ADD13	drill/add13	Drop and give me twenty, maggot!
	DR_ADD14	drill/add14	Get down and break them elbows!
	DR_ADD15	drill/add15	What's your first general order, dirtbag?
	DR_ADD16	drill/add16	Where you from, soldier? Texas! Holy cow! You know what comes from Texas, don't you?
	DR_ADD17	drill/add17	Can I be in charge around here? Well, thank you very much!
	DR_ADD18	drill/add18	You had better square yourself away, Marine!
	DR_ADD19	drill/add19	You better move like you've got a purpose!
	DR_BARRACKS08	drill/barracks08	One! Two! Three! Four! I! Love! The Marine! Corp!
	DR_SOUND4	drill/sound4	What is your major malfunction?

Miscellaneous

Sound	Name	Notes
	old_reveille	An old reveille sound file which was cut from the final game. This version of the reveille horn is a little duller, and doesn't have as much reverb as the one in-game.

Gene Worm

Inside of "sound/misc/" is a sound related to the Gene Worm named "dsbossit.wav", which when played backwards, is a rendition of Gearbox CEO, Randy Pitchford, saying "To win the game, you must kill me, Randall Pitchford." in a similar manner to Doom II.

(Source: MonsieurNuby)

• dsbossit.wav

• Sound reversed.

Unused Graphics

Computers

The files contain three sprite series called "comp". The first one, called comp_a, shows one of the servers from the original game's Apprehension, with and without a hole in it (which can happen in the level the server appears in). Comp_b is a smaller version of comp_a. Comp_C shows a traditional 90s desktop computer with two variants. The first variant has a hole in the monitor and jagged bubble surrounding it, while the second one has the damaged computer from the first variant with a No sign over it.

The graphics have the correct colors needed to be on the HUD.

• 

  comp_a

• 
• 

  comp_b

• 
• 

  comp_C

• 
• 

Nuclear Explosion

Three graphics for a small nuclear explosion are in the game's files. Two of them are the same, while the third one has a transparent background.

While a nuclear explosion does happen at the end of the game, the player is never able to see the explosion itself.

• 

  Nuclear explosion with blue background.

• 

  Nuclear explosion with transparent background.

WON Logo

In WON versions of Opposing Force, in the pak0.pak folder "gfx\shell" there is a graphic called "won_logo.bmp".

Unused Sprites

There are two unused sprite sets with the name "sprite". The first one is a literal sprite, while the second one is an orb with a large star-like shape in the center of it, similar to the floating orbs seen in the last scene of the game.

• 

  The literal sprite.

• 

Happy Face

The unused happy face from the original game's HUD files makes a reappearance in Opposing Force.

Hidden Hack Texture

If the player uses console commands to view the skybox from within the V-22 Osprey during the G-Man sequence, there is a hidden message on the upper skybox texture. The message reads:

HACK HACK HACK
 ALL DAY LONG.

HACK HACK HACK
 WHILE I SING
  THIS SONG.

This poem is a reference to Adam Sandler's song, The Beating of a High School Janitor. This can also be found by viewing the game's files.

CTF HUD Graphics Message

The graphics for the HUD icons in CTF mode have "Opposing Force Capture The Flag" crudely doodled at the bottom of them. This message is never shown in-game.

Unused Text

Disabled Developer Credit

Within titles.txt, there's an additional developer name among the names displayed during the intro. It's aditionally mentioned inside the map logic of the intro, but is not timed correctly to be displayed.

CR9
{
Tollbooth Willy
}

This also happens to be a reference to Adam Sandler's song, Toll Booth Willie.

(Source: Marphy Black)

Placeholder

Gearbox originally created three pak files for the game's content. For whatever reason, one of them (pak0.pak) contains a file called, "placeholder.txt":

:P

The pak files were removed in the SteamPipe update, meaning they can only be found in the retail release.

Developer Configuration Files

In the CD release, there exists configuration files from Opposing Force developers that make references to unused maps and hidden console commands. These files can be found in "pak0.pak".

bind "F2" "map of1a3"
bind "F3" "playdemo ectsdemo1"
bind "F4" "map of2a5dmo"
bind "F5" "playdemo ectsdemo2"

Hidden Console Commands

There are some hidden console commands in Opposing Force.

Haiku

By typing "haiku" into the console on any map, a haiku will be written across the screen. The way it works is that it takes several random sentences and botches them together to form a unique haiku every time.

A complete list of phrases is provided at Half-Life: Opposing Force/Haikus.

• 

  so what if I sweat, programmer's head on a stick, you have been a fool.

• 

  anonymous nub, frictionless, massless mormon, let's tease the weasels.

• 

  some quick goat thinking, candy corn chicken fetus, i have to call chuck.

• 

  white cotton panties, programmer's head on a stick, i must escape it.

Impulse 99

This command (which is also in Half-Life) displays several company logos and the game title in the upper right corner. Only used for pre-release videos and screenshots, it was modified by Gearbox for Opposing Force. The only difference from Half-Life is the addition of the Gearbox and Half-Life: Opposing Force logo. This was used during E3 1999 during some gameplay footages.

This command will not function at resolutions above 1024x768.

• 

  Half-Life: Opposing Force logo.

• 

  Gearbox logo.

• 

  Impulse 99 in-game.

Revisional Differences

Main Menu

The main menu's layout underwent the same changes that the original game did, which removed the unique descriptions for the main options and the little animated "Opposing Force" logo that had soldiers and an Osprey going through a desert in it.

The background graphic is mostly the same, but the Steam version replaces the lambda logo with an image of Adrian holding a green flag and Gordon holding another flag to show off the CTF mode.

Pre-Steam versions	Current Steam release

Console

And like the base game, the console was changed to dropping down when activated to having its own window.

Pre-Steam versions	Current Steam release