Call of Duty 4: Modern Warfare (PC)

Technically the seventh game in the series, Call of Duty 4: Modern Warfare replaces World War II combat stuff with modern (well, 2007-modern) combat stuff. The intense depiction of modern combat, coupled with a slick framerate and polished multiplayer, made the game into a massive hit.

Of course, this also meant it was more susceptible to being pried open for unused stuff.

Longer Training Level
The original version of F.N.G. was considerably longer, going through the controls and all the game's features. Sadly, it was truncated late in development, but there's a mod that reinstates the original level. Among the cut content:


 * Sgt. Newcastle teaching you how to use Grenades, Grenade Launchers, and C4. Due to the haste of making F.N.G. shorter, he is complete and fully functional.
 * Mac teaching the basic moving controls in the obstacle course. All of that dialogue is still present, though.
 * Hangar 2 contains an unused training course which can only be seen through noclip. This area is never used in the uncut version, and most of the course has no collision.

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Cut Weapons, Items, and Perks
Some weapons are inaccessible and unavailable without using console cheats or the mod SDK:


 * Default Weapon - First-person hands are in a really weird pose, with a small blue box sitting on the left wrist. Can kill an enemy in two shots on Veteran, and has a ten-round magazine...except only five are put in on reloads. Pickup icon is a squished AK-47.
 * AW-50 - An anti-material sniper rifle which uses the Dragonov's model and is similar to the Barret .50 Cal. Code and sounds remain in the SDK.
 * Brick Blaster (called "C4 Detonator" in-game) - A USP pistol that fires cinder blocks as well as bullets. Pickup icon is a squished M1911 pistol. Has a 150-round clip, and uses a rifle butt melee animation instead of the usual knife.
 * Select a location - An invisible, non-working AK-47 which uses a rifle butt third-person melee animation instead of the usual knife. Possibly became the Tactical Insertion perk in Call of Duty: Modern Warfare 2. Pickup icon is a weird orange square.
 * M72 LAW - Mentioned in a string of the cut That's No Sandstorm mission.
 * AG36 - Localization strings mention an AG36 grenade launcher for the G36C.
 * AT4 - Impossible to be used normally, but console commands can give this to you. Surprisingly, it has most of its animations except reloading and...actually fires? Wow. It also has an unused perk icon and a HUD icon in the files. On the back end of the model a noticeable separation between the rocket-loading area and the body of the launcher itself, which seems to be why it lacks a reloading animation (as the player would be able to see that separated area).
 * 25mm, 40mm, and 105mm - Weapons for the AC-130 which eventually got used in Modern Warfare 2. Sound effects and spots in the mp weapons folder remain.
 * MAC 10 - A string for it can be found in mod tools, though it did appear in the DS version.
 * Thermite - A grenade from Call of Duty 2, but all that remains is a HUD icon.
 * Sticky Grenade - Another Call of Duty 2 weapon, but all that remains is a HUD icon.
 * MG42 - Another leftover from Call of Duty 2. A barely-visible texture sheet is present, while its HUD icon is used in-game as the pickup icon for some out-of-reach machine guns in Campaign.
 * Camera - All that remains are some strings in the cut Descent mission.
 * Parabolic - Mentioned in strings of the cut Parabolic mission, its only known controls are the sprint key, which would target and amplify conversations. Interestingly, the Eavesdrop perk is coded as "specialty_parabolic".
 * Expose Enemy - A scrapped perk where only its icon remains, code name "specialty_exposeenemy".

Unused Create-A-Class Icons
It would seem that the developers originally planned to have the Create-a-Class weapon icons change based on the attachment that the player equipped on it, as the game files contain a large number of unused Create-a-Class icons for every weapon, each showing the weapon with the attachment connected to it. Some icons have files, but upon opening them the image is blank, indicating that the developers never finished creating these individual icons.

Alternate Camo
In the mission "The Bog", it is possible to acquire an M21 with a unique camouflage through console commands. Upon further inspection, it appears to be an early Desert Camo.



Hidden Texture
In various missions, increasing the brightness through console commands reveals that the texture of the water is actually a bunch of numbers and what appears to be Arabic writing.

Unused Scopes
Due to a programming error, all Sniper Rifles use the M40A3's scope reticle, which leaves several unused scopes in the files.

Unused Multiplayer Ranks
Present in the files are 10 unused rank icons for multiplayer.


 * The first three seem to be early versions of the rank icons.
 * The next five appear to be lower-quality versions of the respective existing rank icons. It seems that there were going to be gold versions of the Eagle, Star and Double Bar rank icons.
 * The last two are highly similar in style to the used rank icons.

Most of these are also present in Call of Duty: World at War, but aren't used there either.



Michael Carver
A name that appears in the unused mission strings for the cut levels "Descent", "Training", "Designated Training", and "Designated Marksman". It is possible that he was the US Marine protagonist before Paul Jackson, but he was scrapped along with said missions.

Mile High Club
The bonus "Mile High Club" stage contains unused dialogue of Gaz referencing Soap. This is because Mile High Club was originally intended for earlier in the game but couldn't be fit into the story, hence why it was altered to use generic versions of the cast and became a post-credits bonus.


 * airplane_gaz_1_1_R: Gaz: "Remember, the objective is to capture Kriegler, I repeat, capture Kriegler, alive. He's no good to us dead."
 * airplane_gaz_7_2_R: Gaz: "Watch your fire up here, we need Kriegler alive."
 * airplane_gaz_9_1_R: Gaz: "Nice one, Soap."
 * airplane_gaz_9_5_R: Gaz: "We're going for a little free fall Kriegler! On your feet!"

Heat
Unused sound files inside the file Villagedef_SAS_ indicate that Mac needed to be rescued in this mission.


 * Gaz: "We got a man down! He's still alive! And he just activated his transponder!"
 * Mac: "I owe you one mate. Thanks for coming back for me."

Cut Levels
Several single-player and multiplayer levels were made but eventually scrapped for various reasons. There are no unfinished playable levels, but there are leftovers and traces in the game files and SDK.

Campaign

 * Cobra Pilot: A USMC mission where you pilot a helicopter in a Middle Eastern city. Was probably cut due to similarity to Death From Above. Models of all the buildings in the level still exist in the SDK.
 * Descent: A USMC mission that involved infiltrating an underground bunker to photograph and identify the remains of Al-Asad and other dead officers. Only text strings and remnants of the Camera "weapon" remain.
 * Designated Marksman: A late USMC Mission taking place in Saudi Arabia. Would involve defending a base and blowing up stuff like Overpasses and Satellite Arrays. Fun! Only the minimap image and text strings remain.
 * Designated Training: A late USMC Mission taking place in Saudi Arabia. Would involve storming and defending a construction site. Only text strings remain.
 * Helicopter Ride: Would presumably involve riding a Helicopter. The only remains are an impressively old, largely unedited minimap image with references to "COD3" in the visible dev console text on it.
 * Immediate Action: Set in the American Embassy in London. Loosely based on the Iranian Embassy Siege of 1980. Would have included a Breaching mechanic. Only a minimap image and text strings remain.
 * Parabolic: An early mission involving using a Parabolic Microphone to collect intel and saving a prisoner. Possibly an earlier version of Blackout. Text strings include mention of a "BM21 rocket test". Only text strings and some remains for the Parabolic Microphone "weapon" remain.
 * That's No Sandstorm: An early USMC mission involving border security patrol on the Omani-Saudi Arabian border. Only text strings and a (untextured, flat shaded) minimap image remain.
 * Training: An early USMC mission where you...get trained, surprisingly enough. Was replaced with "F.N.G.". Text strings reference gameplay features from Call of Duty 2, like holding your breath and bashing with your rifle butt. Only a minimap image and text strings remain.
 * Strike: No info. Possibly a campaign version of Strike. Only a .vision file remains.
 * Rivertown: No info. Only a .vision file and a shortened version of the Parabolic string file remains.
 * Zipline: No info. Prefabs in the level editor are mostly identical to those of Blackout and Parabolic. Only a blank text strings file and the skybox textures still exist - the latter were reused for Blackout.
 * Wet Work: No info. No relation to the "Wet Work" multiplayer map. Only a .vision file remains.
 * Art Gallery: No info. Only the skybox remains - it was ripped from "Crossing the Rhine" in Call of Duty 2. Presumably, the idea evolved into "Museum" in Modern Warfare 2.

Multiplayer

 * Cellblock: A small map centered around a jail cellblock in the Middle East. Only text strings and the minimap image remain.
 * Dusk: A remake of the Call of Duty map Dawnville. Only a loadscreen image and (flatshaded, untextured) minimap image remain.
 * Facility: An industrial facility of some sort. Only text strings and the minimap image remain.
 * Favela: Recycled for Modern Warfare 2. Its code string "mp_Favela" still remains.
 * Forest: A forest with varied terrain and a river with pink water due to a missing texture. Only the minimap image remains.
 * Hill: A multiplayer port of Heat. Only the loadscreen image and a script file remain.
 * Invasion: Planned for the Variety map pack but was recycled for Modern Warfare 2. Only a loadscreen image, minimap image, and the code string "mp_Invasion" remain.
 * Mansion: A small map centered around a single building. Likely cut because it sucked. Only text strings and the minimap image remain.
 * Palace: Loosely based off of Al-Asad's palace from the campaign level "Shock and Awe". Only text strings and the minimap image remain.
 * Rooftops: A road dividing two streets with lots of buildings for a snipefest. Very small! Only text strings and the minimap image remain.
 * Suburbs: A town with oddly-shaped buildings. Only the minimap image remains.

Some differences can be seen between the early and final load screens for the map Broadcast. Such changes included the black ceiling in the early one and the load screen showing a lobby in contrast to the final which has a white ceiling and shows the newsroom. Oh and on a related note Broadcast has an early minimap as well.



Unused Cutscene
CssH7LJOZu8 An unused soundless video called dog_vs_player_load, showing a USMC player being killed by a dog at an unknown (possibly unused) location. In the final game, the USMC never encounter dogs in the campaign.

The video also shows an unused USMC first-person model that is completely gone from the game. The blood and gore effects are also very low-quality, putting this at an early point in development.

Regional Differences
For some reason, the German version not only removed the dramatic gore effect upon shooting Zakhaev's hand off in the "One Shot, One Kill" mission, but Arcade Mode is disabled and cannot be unlocked.

Wii Version
Released on November 2009 as Call of Duty: Modern Warfare Reflex Edition, it has some differences to the PC, 360, and PS3 versions:
 * The ragtime warfare cheat was replaced with a paintball cheat.
 * When using the "A Bad Year" cheat, you must get headshots for enemy corpses to turn into tires.
 * There is no voice chat, and hence no Eavesdrop perk.
 * Exclusive Squadmate mode for Campaign.
 * Some weapons have different reload sounds.
 * Variety Map Pack isn't available.
 * Various other differences.