Fallout: New Vegas

The fourth (canon) entry in everyone's favorite post-apocalyptic RPG series. Developed by Obsidian, which includes a bunch of folks who worked on the original two games. It was released for PC, Xbox 360 and PlayStation 3 in October 2010 to positive reviews and extensive bug complaints.

Most of this content can be played with in the PC version through the use of the console (~) or the New Vegas edition of the G.E.C.K.. Some requires FO3 Archive Utility and/or NifSkope to view.

Survivalist
This Pip Boy image can be found in the game's BSA but there is no corresponding code. A similarly named perk in Fallout 1/2 increased the player's survival (outdoorsman) skill. There aren't really any plain skill upgrade perks in New Vegas.

For the following perks (which are usable in-game), type player.addperk [form id] to give them to your character.

Child At Heart
Seemingly a carryover from Fallout 3, but there are a few uses for it hidden in the game's code (see unused dialog). Since there are mercifully very few children in New Vegas, it would have been almost completely useless. 03142

Companion Suite
Not unused, but inaccessible to the player. A bunch of balance tweaks for companions.

COMPANIONS ONLY Mult Weap DAM 0.75 Mult Target DT 0.75 Decrease Carry Weight 75 Increase DR 33% 15c571

DeathClaw Omelet
Since the criteria for the recipes to work are whether you have the notes, not the perks, this perk does nothing.

This recipe allows you to make Rose's famous deathclaw omelet! 136e14

Spicy Casserole
Since the criteria for the recipes to work are whether you have the notes, not the perks, this perk does nothing. In the game, the only way to get the casserole made is to ask Ruby to make one for you in exchange for a Radscorpion Poison Gland. Ingredients are Flour, Jalapeno, Mole Rat Meat, and Radscoprion Poison Gland.

This recipe allows you to make Ruby's spicy casserole 1613be

Gun Strength Fail
Referred to internally as "NVWeaponSpreadPenalty1". Equipped on your character whenever they try to wield a weapon out of their league. You can give it to yourself permanently if you want to. a9016

Miscellany
The Big Guns skill was removed from the game late enough in development to leave references to it in a few places.
 * Every time a skill check is conducted in dialog for any or all combat skills, Big Guns is checked along with the other five used combat skills. Neil has one of these checks.
 * Additionally, searching through the texture files reveals that True Police Stories was the original Small Guns skill magazine through its filename. Milsurp Review was originally intended as the Big Guns skill magazine until the two skills were fused.

Unused Reputation
The only reference to a Primm reputation is in Testacles's dialog. In the final game, Primm is mostly independent/leaning NCR. That's Primm Slim on the left and what looks like a random hobo in a wasteland settler outfit, though it could be Johnson Nash.

Unused Graphics
An unused piece of graffiti hinting at the first New Vegas DLC, Dead Money. This is only unused in the base game and can be seen with the Dead Money expansion installed.

Unused Yes Man faces.

These audio test cells appear as static world objects in the GECK. There is one for every footstep sound effect in the game.

A medical history test. This was used at some point to determine the player's traits. It is done through the menu in the final game. Some of the answers on the test do not have corresponding traits in the final game, either.

An unused ending slide, showing a different face for House than is used in the final game.

Cut Quests
There are console commands to manipulate quests, but there's not enough meat here to do anything with them.
 * Chip Provenance: Called 'VChipHistory' internally. 118fd3
 * The House Always Wins: There is no "The House Always Wins", only parts I-VIII. 1429f2
 * Jailhouse Rock: An NCR sidequest involving the unused NPCs Trooper Willis, MP Fretwell, and two unnamed NCR Troopers. There are also two blank sidequests immediately following it, VMS27 and VMS28 (VMS29 is Kings' Gambit). 11f86b
 * Meat of Champions: There is a perk with the same name, achieved by cannibalizing some major NPCs. The quest is unused. There are other perks which function through hidden quests, so it's possible they simply changed the internal mechanisms of the perk. Less likely is that at one point in development, the player character would be assigned the task of cannibalism by another NPC. 164afa
 * TempMan: Quest associated with 'Test Man' (see unused characters). cd076
 * Underpass Water Purifier: See unused characters/Meg Reynolds. 103fed
 * Viva Las Vegas!: Unused stage of the main quest. There's not enough information to know anything about it. It shares a name with The King's unique clothing, which makes me think it's a vestige of a cut Kings main quest path, but that's just wishful thinking. 13a40b
 * World Changes Post-Endgame: There is no post-endgame, the game just ends. Also, "Freeside Post-Endgame Content Quest". World: 1567d7 Freeside: 1615e8
 * The Infected Brahmin Meat the player can find in the kitchens of the Ultra-Luxe had an implied use which never made it into the game. Unused pop-up messages exist for poisoning the Legion's stew, but the scripts attached to the message are nonfunctional.

Hidden Quest Names
These are not unused, but they still have names you cannot see in gameplay.
 * A Difference of Opinion: Not unused. This is the name of the quest dealing with Chief Hanlon at Camp Golf. The quest was instead consolidated into Return To Sender.
 * Arachnophobia: Second half of the Camp Searchlight quest, consolidated into Wheel of Fortune. 144519
 * Big Winner: The Tops: One objective: "Visit your private Suite on the 13th floor of the Tops". Might have been an actual quest at some point. 145f88
 * Caesar's Foe: The negative counterpart to Caesar's Favor. Not unused, but never actually assigned, Legion Assassins just start showing up to kill you.
 * Like Water For Stealth Boys: Not unused, hidden. This is the part of Come Fly With Me involving the Nightkin in the REPCONN basement. Its objectives were consolidated into Come Fly With Me.
 * Limited Access: The NCR equivalent to Caesar's Hire, for mixed NCR reputation.
 * Most Wanted: The NCR equivalent to Caesar's Foe.
 * Stocking Up: Bring holotags to Camp Forlorn Hope.
 * Team Spirit: Bring Legion Ears to Camp Forlorn Hope.
 * Welcome To Fabulous New Vegas: A quest that tracks the intro movie. Also includes an unused demo version for some sort of presentation. 102037, 11eba7

Unused Ammo Effects
Woo hoo. Both pretty self-explanatory. There is probably some console command you can use with their base IDs if you really want them to do something.
 * AmmoEffect308DTReduction: 160c69
 * AmmoEffectBeanBagSpreadReduction: 1582e8

Music
'Hangover Heart' by Hank Thompson is listed in the credits as one of the radio songs, but does not appear in the game, or in the game's files. Likely cut due to licensing difficulties.