Videos
Team Fortress 2 - Did You Know Gaming? Feat. Markiplier
Doctor Who Secrets in Video Games - Easter Egg Hunting
 
Attachment
There was a free "Tux" item that was only available in the Linux version of Team Fortress 2. However, it's possible to get the Tux item using a Windows version of Team Fortress 2 by changing the name of the operating system to any Linux distribution, such as Ubuntu, Debian, SteamOS, etc.
Contributed by ABOhiccups
There are 5 unused death sounds in the games files for the scrapped Civilian class.
Contributed by MeleeWaluigi
Three of the Heavy's cosmetic items: "Carl", "Aqua Flops" and "Hunger Force" are all references to Carl Brutananadilewski, from the Adult Swim TV show: Aqua Teen Hunger Force.
Contributed by Boyobmas
Attachment
Several taunts present in the 2014 Love and War Update were already in the game files back in the 2013 Halloween Update, but were quickly removed in the following update.
Contributed by 8BitEthan
The Gun Mettle update included a new taunt called the Kazotsky Kick, which lets the player perform a Ukrainian 'Hopak' dance. While the taunt is active a song will play, which was first heard in the Counter Strike: Global Offensive map, de_train. However, the version that accompanies the taunt features more instruments, has vocal chanting and is about 1.2 times faster.
Contributed by Elderlolz
Attachment
The Soldier is voiced by Rick May, the same actor who voiced Peppy in Star Fox 64.
Contributed by Boyobmas
Attachment
There are 2 unused models of the duck journal in the game. The first is a yellow duck which isn't used in any of the styles.
Interestingly the second skin isn't implemented in the model, but the texture remains for it. It's set up to be paintable, and includes the phrase "Lets Eat!!!", a reference to the character Chica from Five Nights at Freddy's.
Contributed by Johnmegaman72
Attachment
The community-created cosmetic item, the Toowoomba Tunic, is a reference to the tunic that Link from the Legend of Zelda wears.
Contributed by Mister Doctor
Attachment
In the original poster for the "Dr. Grordbort's Brainiac Pack", the "Eureka Effect" is called "Wrenchmotron 600", and the "Eureka Effect" is the name of the taunt used by the weapon.
Contributed by Johnmegaman72
Attachment
The Rooftop Rebel outfit set added in the Scream Fortress 2014 update through the Steam Workshop is a reference to the Hunter from the Left 4 Dead, and resembles the Hunter's design in Left 4 Dead 2.
Contributed by PoisonTardis
"The Southern Hospitality" is a community created weapon, which was released in the Engineer update. Shortly after the Mann-conomy update and the release of the Mann Co. store (where players can now buy items for the game and their creators receive some money for it) the creator sent a thank-you letter to ##Valve## co-founder Gabe Newell. He responded to this by buying 10,000 Southern Hospitalys from the Mann Co. store.
Contributed by Makzu
Attachment
In Team Fortress 2's short film 'Expiration Date', during Scout's conversation with Miss Pauling near the start of the film, a keypad can be seen on the door behind him. When examined closer, the '1' key is noticeably dented when compared to the other keys. This implies that the combination for the door is some variant of '1111' - The same combination for BLU's intelligence room in Meet the Spy.
Contributed by Edd-the-Huntsman
Attachment
The community created cosmetic item "Crazy Legs" for the Scout is named after the nickname of an old bug that would cause the Scout's legs to bend in an unusual fashion. It is also an alternate name for the Hunter, from the Left 4 Dead series, of which inspired the item's appearance.
Contributed by Johnmegaman72
In the Team Fortress 2 short film, "The Spoils of Love and War", during the scene in which the Pyro and Soldier are playing Rock Paper Scissors, there is a blueprint in the background of a capsule shaped robot on a single wheel. This robot is the same as those used in the "Asteroid" map, for the Robot Destruction game mode.
Contributed by Johnmegaman72
Attachment
The community created cosmetic item "The Danger" is a reference to the character Walter White from the television series Breaking Bad. This is further supported by the original workshop name, "The Chemist's Price". The name of the item is also a reference to a quote from the episode "Cornered".
Contributed by gamer365365
The Atomizer's original design was a simple re-skin of the Sandman bat, originally conceived with the name "The Atomic Punch". The name was likely changed to avoid confusion with Bonk! Atomic Punch.
Contributed by Johnmegaman72
Robin Walker has stated that at one point, Valve team members would refer to Sticky Bombs as "winbombs", due to being perceived as too powerful by the team.

"We agree that [stickies] are a little too overpowered right now. In fact, internally, we refer to them as 'winbombs'. We haven't reached a decision on what we'll change yet, though." - Robin Walker
Contributed by Elderlolz
Within the game's files are unused models for a red version of the robots seen in Mann vs. Machine (except for the tank and sentry buster), which can mostly only be seen by modifying the game's files. However, the red model for the robot Spy is used when a spy disguises itself. This could imply that players were originally going to be given the choice as to which team they would play as in Mann vs. Machines matches.
Contributed by alienator2013
One of Spy's lines when talking about the Conga taunt, "Dancing! It is the forbidden dance!" is in reference to the conga being a dance that originated in Cuba, and was forbidden due to people believing it induced excitement and adrenaline, and was blamed for causing fighting in the streets near elections. Cuban president Fulgencio Batista permitted the people of Cuba the right to dance the conga, but only with a police permit.
Contributed by Johnmegaman72
There is an unused texture for the RED Medic's head, which features a lighter and shorter hairstyle, which was previously seen in one of the game's trailers. It is listed as medic_head_red in the game's files.
Contributed by AzelfandQuilava
Attachment
The Soldier Costume Transmogrifier, added in the Halloween update of 2013, had a bucket included in its backpack icon, which all other class Transmogrifiers lacked. This was an early reference to the Team Foretress 2 short animation, "Expiration Date", released in June of 2014, and the Soldier's obsession with a similar looking bucket in the animation.
Contributed by tomp45673
There are several unused voicelines that were added during the Love & War update that suggest a feature where the classes make fun of another player's weapon or hat, as well as a number of lines related to trading.
Contributed by Elderlolz
Attachment
There are unused particle effects with names that relate to the "Conga" taunt. This suggests that the taunt was originally intended to constantly spawn confetti, streamers and fireworks, which are either green or pink.
Contributed by Elderlolz
Attachment
The sniper rifle "The Classic" is a remake of the sniper rifle found in Team Fortress Classic.
Contributed by Bacon_Thief
When the 'Meet the Spy' video was released, The Sniper playermodel was updated in the game, adding the scar that the sniper got in the video. Previously, he had no scar on his face. It was never taken off the player model, and still has the scar.
Contributed by Punchy
Attachment
The Stickybomb Launcher bears resemblance to a weapon cut from Half-Life 2, simply named the "Sticky Launcher". Had it been included, it would have functioned in an almost identical manner, except that it would stick to enemies as well as map surfaces. Also, the Stickbomb Launcher was originally supposed to be the Pipebomb Launcher seen in Team Fortress Classic, but it was changed to the Stickybomb Launcher as the Pipebomb Launcher's only difference was that you could detonate the pipebombs with the alt fire key. The model remains in the game.
Contributed by PoisonTardis
One of the Scout's taunt attacks, called the Home Run, is a reference to Babe Ruth's famous "Called Shot" where he points to the sky, and hits a home run. The scout repeats this, and proceeds to bat any enemy caught in the swing 25 meters away as stated in the related achievement "Out of the Park".
Contributed by Driango
Attachment
The weapon Cleaner's Carbine, and the hat Liquidator's Lid both reference the hitman from the French film "Léon: The Professional", who refers to himself as a "cleaner", rather than a hitman. This view of himself also reflects that of the Sniper's, as he always refers to himself as a "Professional" rather than a psychopathic killer everyone sees him as. The description of the Liquidator's lid also alludes to the lead guitarist (The Edge) of the Irish rock band U2, who wears a similar tuque.
Contributed by Driango
Attachment
During the Love & War update, using a Teleporter can cause a random piece of bread to spawn at the exit. This is a reference to the video "Expiration Date".
Contributed by Zelch
Attachment
Ludmila is a scrapped unlockable primary weapon for the Heavy. Its appearance was later used for Natascha, and the model is still referred to internally as "c_ludmila".
Contributed by Johnmegaman72
Attachment
The P.D.Q. was a scrapped melee weapon for the Engineer that was tested in the Team Fortress 2 Closed Beta. It used the game's Wrench model.
The P.D.Q. does not have the ability to be used to upgrade buildings, and instead increases the Engineer's rate of construction by 150% when hitting the building with this weapon.
Contributed by Johnmegaman72
Attachment
A Fire Retardant Suit was a scrapped secondary weapon for the Spy that was available for use in the Team Fortress 2 Closed Beta.
Two variants of the Fire Retardant Suit are known to have been tested. The first Fire Retardant Suit simply reduces incoming fire damage by 90%. The Fire Retardant Suit Beta 2 does not reduce fire damage, but instead grants the wearer complete immunity to the afterburn effect.
Contributed by Johnmegaman72
Attachment
The Branding Iron is a scrapped melee weapon for the Pyro. It is an over sized branding iron which bears the initials 'TF' on its head.
Contributed by Johnmegaman72
Attachment
The Pyro's "Coffin Kit" has a note on its side which lists the names of various regular item contributors from the TF2 Emporium's Steam group chat. The top name on the list, "Sexy Robot", is the creator of the "Coffin Kit" item.
Contributed by Elderlolz
Attachment
Heavy's cosmetic item "War goggles" was based on the Heavy class from Team Fortress Classic.
Contributed by kirbyrobot150
Attachment
The hat "Deep cover operator" for the Spy and the Sniper is a reference to "Snake" from the Metal Gear series. The hat was also contributed via the Steam Workshop under the name "Fox-Tie Wall Camo", a reference to Metal Gear's FOXDIE.
Contributed by kirbyrobot150
Attachment
The back of the Bombinomicon, visible on the Eyeaduct, Ghost Fort, and Helltower maps, has a description of the book, three one-line reviews, and a price tag that reads "discount $6.66".
Contributed by kirbyrobot150
Attachment
There is an unused texture for the voodoo-cursed Spy, which features his face stained with blood. The file itself appears to be used in-game, but because the alpha mask is completely transparent, the skeleton face below it shows through instead.
Contributed by kirbyrobot150
Attachment
During the Meet the Medic trailer, when Archimedes gets hit with a piece of the Heavy's heart, a figure standing in an observation room above the surgical area can be seen.

This is most likely Miss Pauling, the Administrator's assistant in the the Team Fortress 2 comics, who keeps an eye on the mercenaries.
Contributed by MidwayCJ
Attachment
While wearing the "Magical Mercenary" Hat, the Soldier says "Friendship is magic, Creampuffs" and the Scout says "Friendship is freaking magic". Along with the hat's design, both phrases are references to the show My Little Pony: Friendship is Magic.
Contributed by kirbyrobot150
There are unused sounds for the Rescue Ranger. The sound names imply that at one point during development, the weapon was able to move buildings and to be charged to fire a (probably) more powerful shot. These abilities were presumably removed for balancing reasons.
Contributed by Elderlolz
Attachment
At the end of the "Meet the Soldier" trailer, there are only 8 heads on the fence. The only head that doesn't appear is the Scout's.

It isn't simply off the screen however, as the 8 heads are all part of a single model file, which shows that the partially obscured head in the video is that of the BLU Soldier.
Contributed by MidwayCJ
Attachment
A Golden Frying Pan weapon was added in The Two Cities update. However, unlike the 19 generic Australium weapons introduced at the same time, the Golden Frying Pan shares an unusual trait with previous rare items made of Australium: enemies killed with it will turn into a golden statue. Whenever earned in a Mann vs. Machine game, a global message is displayed that states the owner's name. Since the update, only a few have been found, with the first one selling on the Steam Marketplace for $5,500.
Contributed by Elderlolz
Attachment
The Neon Annihilator's battery has a nod to the Facepunch forums written on it: the texture reads "def2fp", meaning Death to Facepunch. The BLU version was originally intended to say "props2fp", but was changed by Valve, possibly unintentionally.

The weapon was originally supposed to be a chinese lantern, but the idea was dropped at Valve's suggestion since it closely resembled an unused weapon called the "Baleful Beacon".
Contributed by Elderlolz
Attachment
The texture for the community-created HazMat Headcase item has a hidden note in the corner, outside the area used by the model. The message reads "SW ♥ PR 4evr", meaning "Sparkwire loves Primrose forever", both of whom are credited with the item's creation.
Contributed by Elderlolz
The "Meet the Medic" class video was originally going to follow the interview format that the previous Meet the Team videos had used.

After a lot of iteration, with different scenes being scrapped for different reasons, the team realized they were putting too much focus on the creation of the Medigun and not the Medic himself. Once they found the right idea, the video came together relatively quickly.
Contributed by MidwayCJ
The voice lines "No otha' class' gonna do dat!", "If you order now, I'll throw in a second beatin', absolutely free!", and "Look at this: just caved in your skull, my Bat's still dry. No clumps of hair - nothin'." were added in The Scout Update to the game after fans noticed a resemblance between the Scout and TV pitchman Vince Offer. Offer is best known for being the pitch man for the ShamWow! and these voice lines are parodied from this commercial.
Contributed by MidwayCJ
One of the Scout's voice responses for stunning an enemy with The Sandman is 'Ding dong!'. This is a reference to The Crazy Church Guy from Left 4 Dead, who says this while ringing the church bell. Both characters have the same voice actor, Nathan Vetterlein.
Contributed by MidwayCJ
Attachment
The Team Captain hat is based off M. Bison's hat from Street Fighter. The flavor text "Our lawyers say 'YES! YES!'" is a reference to a scene in the Street Fighter cartoon where M.Bison exclaims 'YES! 'YES!' after witnessing Guile's defeat, which developed into an internet meme.
Contributed by MidwayCJ
Attachment
The Two Cities update introduced two new maps for Mann vs. Machine: Rottenburg and Mannhattan.

Mannhattan introduced a new kind of robot called "GateBots" that attempt to gain control of spawning gates on the map instead of carrying the bomb. These robots can be identified by the yellow GateBot lights they wear. Due to a bug, it was temporarily possible for players to craft GateBot lights.

Valve replaced the crafted GateBot Lights with an item called "Glitched Circuit Board". According to the item's description, the lights self-destructed after falling into human hands.
Contributed by Elderlolz
The robots voices in Mann vs Machine are simply the standard, human class dialogue passed through a robotic filter.

Among these voice files are unused Demoman and Soldier lines, generally stating "DOMINATED!", followed by expressions of concern or friendship.

It's likely that the original, human versions of these lines were created for the WAR! Update, in which the BLU Soldier and RED Demoman were discovered to have a secret friendship, and the administrator pitted them against each other. The unused voice clips imply that the Soldier and Demoman were putting on an act for their bosses, pretending to no longer be friends. It's unknown why Valve chose not to include these lines.
Contributed by MidwayCJ
Attachment
A glitch in the Spy's model will cause him to resemble a crab when holding his Disguise Kit and looking up.

The act of doing this became known as "Spy Crabbing", a light-hearted way to grief matches as the players would do nothing but walk around in this crab-like state. This eventually led to other players encouraging people to not kill these players and save the "Endangered Spy Crab".

Spy Crabbing became so popular that Valve not only opted to not fix the glitch, but added a taunt for the Spy that has a random chance of occurring when taunting with the disguise kit out. Instead of flicking his cigarette as usual, the spy will squat down, raise his arms like a crab, and click his fingers and disguise kit together like pincers.
Contributed by MidwayCJ
Attachment
In December 2009, as part of the WAR! Update, Valve ran a competition between the Soldier and Demoman classes. The objective was to kill as many of the opposite class as possible, with reward going to the victor.

At the end of the 8 day event, it was revealed that the Soldier was the winner with over 100,000 more Demomen killed than Soldiers. As a result, the Gunboats were added to the game as a secondary item for the Soldier.

For years it was speculated what would have been added if the Demoman team won, until lead designer Robin Walker replied in an email: "It would have been the Gunboats. It was an item we'd tested with both, and seemed to work fine with either." -- Robin Walker
Contributed by MidwayCJ
The idea for the Spy came from a bug which caused some enemy players to appear as allies.
Contributed by MidwayCJ
The voice actor for the Spy also voices the Pyro, and the voice actor for the Demoman also voices the Heavy.
Contributed by kirbyrobot150
Attachment
An unused head model with 3 different skins for the Heavy robot (with red, blue, and yellow eyes) can be found in the files for Team Fortress 2.
Contributed by kirbyrobot150
Attachment
The concept art for the Demoman originally showed him as a stereotypical Scottish person, with white skin and red hair. This was dropped because the developers thought he lacked originality and needed to be different from the other classes.
Contributed by DeerBoarDude
While Rottenburg is said to have been the Medic's hometown, his official profile previously stated that he was raised in Stuttgart, Germany.
Contributed by sandvichisspy
The Ubercharge effect produced by the Medic in the "Meet the Medic" trailer is only possible with the stock Medi-Gun, but the Medi-Gun he is using is the Quick-Fix. Valve explained this in the "Uber Update", saying that the Quick-Fix's Invulnerability function shorted out after it's first time use.
Contributed by snipes88
Attachment
The Ap-Sap, a sapper replacement for the Spy, is a reference to Wheatley, a main character in Portal 2, even having the same voice actor, Steven Merchant, voice the weapons sound files.
Contributed by sandvichisspy
Attachment
The "Unusual" effect, "It's A Secret To Everybody", is a reference to The Legend of Zelda, where the phrase has appeared repeatedly.
Contributed by Angry75501
The death sounds in the "Meet the Engineer" trailer are different to that of the final game. This is most noticeable at 0:38, when there is clearly a Sniper on the rocks, but when the sentry gun shoots him, the death sound is that of a Soldier. Additionally, when an off-screen class yells "MY ARM!" at 0:54, it sounds like a Scout yelling, but the arm is clearly that of the Sniper.
Contributed by snipes88
The second trailer for Team Fortress 2 shows gameplay footage of each class, except for the Medic. However, the Medic does make two appearances in the video; once at 1:47, on the left, and once again at 1:50, he can be seen behind a wall.

The trailer also shows many sound and weapon changes. Some of these include the Scout using a weapon called the Nailgun, which was replaced by the Scattergun, and the Demoman can be seen throwing an pack of Dynamite, which was later replaced by his Stickybombs. Every class, including the Pyro, uses generic scream sounds for taking damage and dying, including the infamous Wilhelm scream.
Contributed by Elderlolz
Attachment
In the "Meet The Sniper" trailer, the sniper pokes a bobble head and says "Boom, headshot." The bobble head is a reference to the Team Fortress Classic gamemode "Assassination", in which a group of snipers must kill a V.I.P. to win, and the phrase "Boom, headshot" is a reference to an internet mockumentary series called Pure Pwnage, in which a character called FPS Doug exclaims the phrase throughout.
Contributed by sandvichisspy
Many of the AI bots in the game are named after references to Team Fortress 2, Valve's other works, and computer programming. Many of these names were requested by users on the Steam forums.
Contributed by Elderlolz
Attachment
Due to its close resemblance to the ADAM Harvester from the Bioshock series, Valve requested permission from 2K Games to add the Vita-Saw to the game. However, due to copyright reason, Valve can't sell the Vita-Saw in the Mann Co. Store.
Contributed by sandvichisspy
Attachment
S.E.D, the acronym of "Sandvich Edible Device", is also the acronym for the Sozialistische Einheitspartei Deutschlands, the Communist governing party of East Germany from October 1949 to March 1990.
Contributed by sandvichisspy
Attachment
The weapon 'Blutsauger' has 2 unused, team-colored models for a syringe projectile. As it is not used, it instead uses the same projectile as the other Syringe Guns.
Contributed by Elderlolz
Attachment
The wooden section of the Liberty Launcher's barrel has a crack on it, referencing the famous Liberty Bell.
Contributed by Elderlolz
Attachment
Inside the Virtual Viewfinder's model is a screen that reads "Game Over".
Contributed by Elderlolz
Attachment
The Natascha's wind up sound file is used by the forklift in Left 4 Dead 2.
Contributed by sandvichisspy
Attachment
There is an unused Kill Icon in the game that suggests the Taunt item 'Shred Alert' was once planned to be a Taunt Kill, meaning that players within it's radius would be killed, similar to the Pyro's Armageddon Taunt.
Contributed by Elderlolz
Attachment
The level on the "Candy Cane" weapon is 25, referencing the date of Christmas.
Contributed by sandvichisspy
Attachment
The Spy revolver "L'Etranger", meaning "The Stranger" in English, is named after a book of the same name written by Albert Camus, in which an emotionally detached french Algerian murders an Arabian man using a handgun. The main character is mainly considered a sociopath due to his cold hearted nature, similar to that of the Spy.
Contributed by sandvichisspy
Attachment
One of the taunt kills for the Pyro is called "Hadouken". This is a direct reference to Street Fighter. The audio and kill icon further support this, although it's hard to understand the audio, but it does sound like the Pyro is saying "Hadou-Ken!".
Contributed by snipes88
According to someone on the Team Fortress 2 development team, the song that was going to be playing in the Pyro's mind in the video, "Meet The Pyro," was originally going to be Tiny Tim's "Livin' in the Sunlight, Lovin' in the Moonlight." For one reason or another, the song was not used and was instead replaced with "Do You Believe in Magic" by The Lovin' Spoonful.
Contributed by gamemaster1991
Attachment
The Spy's hat, Familiar Fez, is a reference to the character Mustafa from the movie "Austin Powers: The Spy Who Shagged Me," who wears a fez and sunglasses like the Spy does. The name comes from a line that Austin says, where he says to Mustafa, "I don't recall your name, but your fez is familiar." The description mentions "a line of three-question-format reasoning," which comes from the fact that Mustafa had to answer the question given to him after being asked the same question three times, because it irritated him.
Contributed by gamemaster1991
The model for the Engineer Robot had actually been in the game's files since the Mann vs. Machine update, but the enemy was not actually implemented until months later during the Mecha Update.
Contributed by TailsFiraga
Attachment
The Medic's pet bird, Archimedes, is named after the famous Greek physicist of the same name.
Contributed by snipes88
Attachment
As part of the Pyromania update, two new Scout weapons were the Baby Face Blaster and the Pretty Boy's Pocket Pistol. These are references to famous criminals from the 1930's. The criminals were nicknamed George "Baby Face" Nelson and Charles "Pretty Boy" Floyd.
Contributed by ORWELL6
Attachment
Most of the sounds for the Soldier's rocket launcher "The Original" are remastered from the original Quake rocket launcher.
Contributed by gamer365365
Attachment
The Dalokohs Bar got its name from the Russian word for chocolate, spelled backwards (shokolad).
Contributed by Antwan
Attachment
The Spy knife "Your Eternal Reward" is a reference to a scene in the 1992 film Aladdin, in which Jafar fools Aladdin with his disguise and then attempts to murder him with a dagger that Jafar refers to as "Your Eternal Reward."
Contributed by Lauro27
Attachment
The Proof Of Purchase, a promotional hat, is a reference to the human player model from an early version of the game named "Invasion." The hat's description further supports this, stating "From another era."
Contributed by gamer365365
Attachment
The bow tie "Dr. Whoa" is a reference to the science fiction series "Doctor Who" and is often associated with the main character 'the Doctor', particularly the 11th incarnation. The bow tie can be worn by either the Medic or Spy and was created through the Steam Workshop by the user "TauVee".
Contributed by KnowledgeBase
Attachment
The Pain Train, a melee weapon used by the Soldier and the Demoman, was originally intended for the Pyro.
Contributed by Antwan
Attachment
The Red Tape Recorder when slowed down to -80% says, "Let's make some noise"
Contributed by Somename
Attachment
In early development, Team Fortress 2 contained grenades. The commentary for the game states that they didn't use grenades in the end because they were afraid that players would just spam them, so they were removed from the game entirely.
Contributed by The PUNisher
Attachment
The SMG was originally intended for the Scout. Not only does the first trailer show off the Scout running with the SMG, but the game files for the weapon are still named "tf_weapon_smg_scout".
Contributed by Antwan
There is a piece of unused music that was originally intended to play in the background of the Upgrade Station. While cut from the final version, it is still available within the game's files.
Contributed by Dvon
On the official Team Fortress 2 Wiki, pressing up, up, down, down, left, right, left, right, B, A, enter will cause a Spy to drop from above, plant a sapper on the logo, and audio will play from the Engineer.
Contributed by Dvon
Attachment
If a Scout is blown up, there is a 1 in 100 chance that a dove will fly out of his body. This is a reference to the Meet the Medic trailer, in which the medic accidentally seals his pet bird, Archimedes, inside the scout's chest.
Contributed by ORWELL6
The Mann vs. Machine update, released in August of 2012, had been teased by Valve for almost 3 years:
• In October of 2009, during the Haunted Hallowe'en Special, the will of Zepheniah Mann, the father of Redmond and Blutarch Mann, the owners of Blu and Red, respectively, showed that he had an unknown third son, who was revealed during the Mann vs Machine update as Gray Mann, the one sending robots to destroy Mann Co.
• During the 119th update several months later, a teaser video was released for the Engineer Update. In said video, multiple robot heads of the Heavy and Demoman classes could be seen in the background. These would later be seen as the heads for their respective robots sent by Gray Mann.
• Much later, during the Christmas 2011 update, a hidden back room, accessible only via cheats, was found in the newly added map "Foundry". In the room, it shows a cowering Heavy and Scout looking at developed pictures showing several of Gray Mann's robots. Besides these pictures, there are also 3 numbers in the map, "13 22 13", which in alpha numeric code translates to "MVM", the initals of the future update.
• During the Pyromania update 6 months later, the also newly added map "Doomsday" included another room only accessible with cheats. In this room, a disappointed Spy can be seen with the same 4 pictures and a map showing a town, a factory, and a farm. These 3 places would be the 3 MVM maps, Coaltown, Mannworks, and Decoy, respectively.
• 2 months later, the actual Mann vs. Machine update was released
Contributed by tomp45673
Attachment
The Engineer Update was originally going to have a new building called the Repair Node, which would repair nearby buildings in bursts. It was scrapped due to how poorly the Engineer played when it replaced the Dispenser or the Teleporter.
Contributed by Antwan
Attachment
The Buffalo Steak Sandvich was originally going to be a peyote cactus. Playtesters felt that a man in a native American headdress punching people in a peyote-induced rage would be considered racist. The creator had to quickly replace the item with something else.
Contributed by Antwan
Attachment
Early during development, Team Fortress 2's visual style appeared different than its final cartoon appearance. It was similar to its predecessor, Team Fortress Classic, and the Counter-Strike series.
Contributed by KnowledgeBase
Attachment
The in-game hat item "The Tavish DeGroot Experience" is a direct reference to Jimi Hendrix. It is named after his band, "The Jimi Hendrix Experience", and is a similar style to the hat that he was often seen wearing. The item's description is also a reference to Hendrix's first single, "Hey Joe", and reads "Hey, Joe, where you going with that sticky launcher in your hand?".
Contributed by oskachu
Attachment
If it is either Halloween or a Full Moon, you can wear special items for each class. If you put the Grand Duchess costume set on the Heavy he will have a large amount of new dialogue to say, one of which is "Everyone! Friendship is stupid magic!" Referencing the cartoon My Little Pony: Friendship is Magic.
Contributed by Des