Exploits

“

I have considered an appropriate punishment for the good-for-nothings responsible for this horrendous breach of conduct. Death, of course—but death is too good for disappointments such as these. — The Administrator

”

An exploit is a bug or unintended feature of gameplay that is deliberately and knowingly used by the player to gain an advantage. For example, if a bug enables a player to be immune to damage and a player knowingly uses it, it is an exploit.

In contrast, bugs or problems which either do not affect gameplay or else are not intentionally triggered are classified under glitch.

General Exploits

NOTE: An exploit is said to be broken if it is unintentional to the game's developers, because it is a broken feature of the game.

By Class

Scout Exploits

• Sandman through Wall Moving towards a wall then hitting the Sandman ball right before hitting the wall may send the ball through it, hitting unsuspecting players on the other side. (PC/Mac version only)

Soldier Exploits

• Surviving Kamikaze Taunt Performing the Kamikaze taunt with the Rocket Jumper equipped to the primary slot will allow the Soldier to survive the taunt with no blast damage, only taking fall damage. (PC/Mac version only)

Pyro Exploits

• Rapid Compression Blast This happens when a Pyro holds down primary fire (M1 by default) then they abruptly using secondary fire (M2 by default) with the Flamethrower or Degreaser. In third-person it should look like multiple airblasts, when in first-person you shouldn't hear or see anything coming out of the Flamethrower. (PC/Mac version only)

• Powerjack Boost This happens when a Pyro is burning their enemy with the Flamethrower, then when they are just about to die the Pyro switches to the Powerjack and receive the +75 health boost as if they killed the enemy with the Powerjack. (PC/Mac version only)

Demoman Exploits

• Making Stickies Stick Halfway Through Walls If a sticky bomb is shot at the correct angle, then it can stick halfway through a thin wall and can damage players on the other side, but not cause damage on the side from which the sticky bomb was shot.

Engineer Exploits

Building Exploits

• Teleporter Exploit Whereby an Engineer could earn himself a large amount of points by using his own teleporter repeatedly. Every time an Engineer's teleporter is used, the Engineer who made that teleporter gets half of a point. (Fixed in PC/Mac version, broken in Xbox 360 and PS3 versions)

• Tele-Trap Exploit Whereby an Engineer places a teleporter exit in such a way that the victim can't move upon using it.

Medic Exploits

• Needle Boosting Whereby players could be boosted by Medics to inaccessible areas. This is done by Medics who shoot their needles underneath players on their own team. (Fixed in PC/Mac version, broken in Xbox 360 and PS3 versions)

Spy Exploits

• Wall Sap Spies can place Sappers through thin walls, sapping buildings on the other side. (Fixed in PC/Mac and Xbox 360 versions, broken in PS3 version)

• Cloaked Taunt (Patched May 19, 2010 Patch) This is when a Spy taunts while cloaked. In order for a Spy to do this they would have to taunt and quickly Cloak. This can be exploited with the knife's kill-taunt, as the enemy cannot see the Spy taunting. Still possible after patch, but considerably more difficult to the point of actually fixed. (Fixed; PC/Mac version only)

• Dispenser Exploit Whereby a Spy can build a Dispenser by typing "build 0" into the console. The Spy needs the necessary metal to construct it, and cannot upgrade it, although allied Engineers can upgrade it. The Spy will not see it in the HUD, but will hear if it is low on health or being sapped. Spies lose the ability to place Sappers until they die or use a ammo locker after doing this. (Fixed; PC/Mac version only)

Terrain Exploits

• Fenced Sentries Whereby an Engineer may place his Sentry Gun behind a linked fence, from behind which it can shoot. These can still generally be sapped or affected by explosive splash damage. (Broken)

• Fenced Teleporters Similar to Fenced Sentry Guns, but instead of a Sentry Gun, putting a teleporter exit behind a fence, almost always made to trap teammates. (Broken)

• Jumping Through Walls Whereby players are able to jump through walls. This is also known as the "Jelly Hop". This is done by using a variation of crouch jumping. Essentially the player needs to get into crouch jump mode, by pressing crouch and then pressing jump. Then they must either keep on pressing crouch while pushing towards the wall, or by pressing and holding crouch as you hit the wall.

• Shooting Through the Gates in Various Maps Some maps will have a pair of separable gates that do not open until after setup time has ended. However it has been found that Snipers may shoot through the gates and that the Pyro's flames can bypass them. While the Pyro's flames passing through may be considered an intended feature due to the gates featuring chain links in-game, Snipers may actually shoot through the solid metal sections of the gates themselves. Demomen, Soldiers, and sometimes Medics can sometimes use the cracks in the walls to use their explosive weapons to hurt/kill enemies in their own spawn.(Partially Broken). If a Sniper throws Jarate at the base of the gates, enemies in range will be Jarated. A Scout with the Sandman can hit his ball through any gate by running up to the gate and hitting the ball a split second before he touches the gate. This can be used to stun enemies like Pyros and Heavies just before the gates open, stopping them from annihilating your entire team.

• Skywalking Whereby a player gains vast height through sticky jumping, rocket jumping or using Engineer's buildings to gain enough height to allow them to walk on top of the map area. This is also possible for other classes in cooperation with their opponents, by using Knock back. (e.g. an enemy sentry or an enemy Medic)

• Underground Sentries Whereby an Engineer may place his Sentry Gun under the surface of the ground, where it can attack but not be attacked back. It can be sapped by Spies in some cases, where the Sentry Gun under the map is close to the surface. (Broken)

• Rooftops In several stages, mainly Badwater Basin, there are spots on the rooftops of buildings that can be walked upon without any invisible walls obstructing movement. In Badwater Basin, a prime example of this would be at the second point. Directly to the left of the building with a balcony, there is a building with an orange rooftop. On the farthest left part of the roof, there is a small niche that Demomen, and occasionally Soldiers, can walk on. It may take a few tries due to fall damage, but you can still be healed by a Medic on the ground. This position can be terribly annoying for the BLU team, especially since the Demoman can constantly get up there as long as RED controls the second point's roof area. (Partially Broken)

Map Specific Exploits

2Fort

• Entering Enemy's Spawn The Engineer can build a teleporter exit in their spawn. After the Sniper/Spy-update (which allows Spies to take enemy Teleporters), it's possible to enter the enemy's spawn with an enemy Engineer. You must be a Spy to use the teleporter/enter the enemy's spawn. This is currently unpatched.

• Entering Enemy's Spawn 1 A hole in right side of the No Enter symbol for BLU's base (the one next to the haystacks) can be used by red players to get into the BLU's spawn. The hole is located on the right side of the No Enter symbol, if you are facing their spawn. The only way to get in there, is if one of the BLU's team member goes to their spawn or comes out of it. Then while the door is still open, you need to stand next to it and move toward the right side and you will get in their spawn. This persists in the Xbox 360 and PS3 versions.

• Entering Enemy's Spawn 2 In BLU base when an Engineer crouch jumps next to a plank below the spawn, they will go through the map, and if the game lets them spawn a building in the spawn the Engineer can build a teleporter inside allowing other players to enter.

• Entering Enemy's Spawn 3 Be an Engineer. go to RED building, and near the entrance to the pipes, you will see a bunch of crates. Build an entrance behind them, and refill your metal. Now climb on the entrance, then jump towards the crates, and crouch when you reach to top of your jump. You will now climb on the crates. Go the the edge of them, the one facing the stairs to the pipes, and then Crouch Jump, then build an exit inside RED's spawn. Notice that it must be at the edge, or you won't be able to jump. Now go to the entrance, and teleport. You will appear in RED's spawn. This could be useful for BLU, as they can enter RED's spawn, and also be useful for RED, in case they you don't want your entrance to be sapped. You can also build a Sentry Gun by trying to build very closely to the wall's edge; keep jumping and moving forward as far as you can before falling off the crates and you'll get it. With this method, you can have a Sentry Gun, Dispenser and Teleporter inside the RED spawn for you and your teammates.

• Opening Safe Room's Door It is possible to open the door leading into the "Safe Room" in which you first respawn, by jump-crouching into the door's handles amd jump-crouching again to reach the top of the door, and it will then open. (Fixed - PC/Mac version)

Note: This can only be done in the BLU main Respawn area and may sometimes not open.

• Getting Outside of the Bridge Go to the staircase near the BLU Intelligence. Then by using the crouch jump exploit, build a teleporter while facing the wall (not the side where when you build it, you get stuck in a black room). Then teleport to the outside of the map, and go to the right to build a Dispenser, and either have a Medic teleport there to boost you up high enough to make it up to the top of the ledge or build your teleporter up on the ledge, and suicide (You do not have to suicide, if you build a Sentry Gun and use that to crouch jump to the top of the ledge. Then go right to the wall in the video, and have a Medic needle boost you all the way to the top, where you should build your teleporter. When you are up there, you can jump down to the other side, and you will be outside of the bridge in 2Fort.

• Holding Enemy's Spawn Door Open Both teams can hold open the enemies spawn door at the hay room by running into it while it is open. While this works well for the BLU team, as they can potentially spawn camp, it's not so easy for the RED team. Should a member of the RED team attempt this, they can potentially get stuck in the door, unable to move, and end up getting dragged up and down with the door as the BLU team enters and leaves the spawn area.

• Pointless Room There is a spot in each Intelligence room, where players can get others stuck. This a dead-end, because players cannot escape, unless they suicide, or someone has built a teleporter that leads to the outside of this room. By building a Dispenser on the left wall of the left corridor (the one facing the Intelligence) and then by using the "jump through roofs" exploits to build a teleporter exit, a player can trap other players on their team. There is no tactical advantage to getting in here (Sentry Guns don't work here either), you can't be shot or shoot anybody. It is mostly used by people who are griefing as they will set up a teleporter entrance somewhere in your base and an exit in the roof. This then traps your team-mates and forces them to commit suicide. (Fixed in PC/Mac version, broken in 360 and PS3 versions) '

• Roof Holes A hole in the roof of BLU's 'upstairs' room (above and behind the balcony) allows arcing projectiles (grenades and needles) to be fired into the 'upstairs' room just outside BLU's main respawn room. It can be used for taking out Sentry Guns placed in the corner of the upstairs room. This looks intentional; however the same cannot be used on RED's base as chicken wire covers the hole. (Fixed(?) in PC/Mac version, broken in 360 and PS3 versions)

• Building a Sentry Gun on Top of Intelligence Staircase Room You will need a Medic. Even though this can be done in both BLU and RED sides, the procedure for the BLU side is a little harder and longer, so this will be how to do it in the RED side, which is easier.

• • First be an Engineer, and then go to the Intelligence Staircase Room (Outside Main Spawn Room, turn right and it's the room you see across). Go down halfway though the stairs, stop, and turn right (you must be facing the rocky wall with the wooden ledge above).

Now do the Crouch-Jump Exploit to get glitched (head sticking though ceilings), jump into the metal bar and move right all the way to the top, then move left, and you'll notice you wont anymore move downwards but sideways, take out your PDA and move leftwards until you can build your teleporter.

• • Now go build your entrance anywhere, resupply and when you teleport, you'll be facing the Intelligence Staircase Room (but from the outside). Now turn right, destroy your teleporter and move across the invisible wall until you can build your Exit Teleporter (near left corner). Now kill yourself and teleport again, move left and you'll get to the cow and fence.

This is the first half, which is also known as "Getting to the 2Fort Cow". It might look long but with little experience it might take you some 2 and a half minutes to get there.

• • Now build a Dispenser right next to the thing with the small roof in front of the cow, jump-crouch on top of it to climb to the second roof and build a teleporter, and then stand on the teleporter to be able to jump-crouch onto the third roof. Now call your Medic and make him needle boost you to the top of the building. Once you're up there, you can build your Dispenser and Exit for your teammates, and build your Sentry Gun on the edge of the Roof for a really good defense of all the Courtyard Area.

You might think that the Sentry Gun is too high, but its range does cover all of the below area. Now make sure that you build your Exit as far in the back as possible (you can run on some space without floor), because if it gets destroyed and an Sniper gets you, you'll have to do all the process again.

Badlands

• The Red Spawn The red teams initial spawn room has misplaced no-entry blocks allowing members of the BLU team to sneak in.

• Middle Spawns You can build stuff in the middle spawns (once the fourth point is captured). You have to crouch to be able to build.

• Last Point It is possible to cap/block a capture from the outside of the cap.

Dustbowl

Stage 1

• Starting Gates During the set-up time a Demoman can bounce pipe bombs through the gates to the blue spawn.

• Building Inside Spawn In the blue spawn an Engineer can build right in front of the gate on the left and in a corner off by the gate on the right.

• Skywalking 1 Cap 2. Engineers can build Dispensers/Sentry Guns to stand on or by jumping on top of boxes, are able to access some high areas. To skywalk, go to the small room with the boxes (the one across the bridge) , and then click crouch and then jump to be able to place a teleporter exit. Then by building a Dispenser next to the wall and building another teleporter exit on top of the wall, you are able to skywalk at Cap 2 Stage 1 Dustbowl. You are also able to build Sentry Guns on top of the room with the box.

• Infiltrating the Protected Tunnel The 'secondary' entrance to the tunnel protected by a one-way door (from RED's perspective) is on a ledge just a short distance away from the door, but is generally only accessible if playing as a Scout, Soldier or Demoman, who can jump/blast their way onto the ledge. However, any class can reach the ledge from the outside due to the presence of several solid bolts and planks against the wall (which can be stood upon), running between the door and the ledge itself. Starting from the closed side of the one-way door, facing in the direction of the first Control Point, the player must jump forwards while pressed against the wall to their right, landing on a bolt attached to a downward-sloping plank. The player must then jump forwards again, landing on a plank tangential to the previous wall. From there, the player can hop onto the barrels in the corner of the ledge, or the small patch of ground in front of the barrels, arriving on the ledge itself and thus gaining access to the tunnel.

Stage 2

• Glitched Area Control point 1 building - Allows a Soldier or Demoman to blast jump into the roof area of the building. Additionally, Scouts can double jump to get up there, and Engineers can build a Dispenser and jump on that to get up there (the back section opposite wall to the rail track). (Possibly legitimate)

• Glitched Wall Cap 2. A specific wall allows players to go into it..

• Healing Through Walls By building your Dispenser inside the small house next to cap 1 you are able to get metal and heal yourself. To do this, simply build your Dispenser as close as possible to the wall with the telephone, and go on the other side to see if you made it close enough.

• Skywalking Cap 2. To do this, simply build your Dispenser onto of the farthest section of stage 2 cap 2 from the cap. And then get yourself glitched, by clicking crouch and then jump, and then have a Medic needle boost you, to build your teleporter.

• Teleporters Above Ground To do this, go to the small house that is next to cap 1 of stage 2. Then go to the sections with either a telephone on the desk, or a coffee machine on the desk. By standing on this, you are able to build your Teleporters on top of the desk. You might have to shift around or jump to get this to work.

• Teleporter Inside RED Spawn By crouching while next to the side of the walls you are able to build your teleporter, Sentry Gun, or Dispenser in your spawn or the enemies.

• Return to Stage 1 BLU Spawn - Allows you to move back to the 1st stage of Dustbowl. This requires an Engineer and a Medic. Let the Engineer go to the LEFT supply locker of BLU, then get glitched by crouching then jumping. Now, the Medic needs to needle boost him to the top of the locker, then the Engineer needs to build an exit on the roof. Teleport, and you will be behind the fence that is blocking stage 1. Combine this with Stage 1 Skywalk, and you will be able to skywalk above your spawn, and defend it from above.

Stage 3

• Teleporter Inside BLU Spawn By crouching, while next to the side of the walls, you are able to build your teleporter, Sentry Gun, or Dispenser in your spawn or the enemies.

• Hiding Stickies Cap 1: If you are a RED Demoman and go to the blue exit gate on your left side, aim about a foot off the ground, count 3 cobblestones back towards the cp, and you can shoot stickies into the wall. Here they cannot be seen aside from a mute red light which goes away.

• Skywalking Cap 2: You will need an Engineer and a Medic for this. From RED's spawn, walk forward, until you will see a staircase to your RIGHT (not the one who leads down, but the one who leads UP). Climb it, and walk all the way, until you see an exit to your RIGHT. Build a Dispenser there (make sure it won't be under the roof), and climb on it. Take out a Teleporter Exit, and let the Medic needle boost you, while you hold "Build" button. If done correctly, you will build the exit at the sky. Now, refill your metal supply, build a teleporter entrance, and teleport. You will notice you cannot move. Destroy the Exit, and build it again somewhere around you. Now suicide (Switch to another class then back to Engineer), and teleport. You are now skywalking. Be careful not to go out of the map's bounds, or you will fall down to the ground and stay stuck there unless you suicide.

Gold Rush

• Stage 1 Engineers can build on the balcony just before the final cap point.

Video: http://youtube.com/watch?v=2m6lYS7AYmo

• Stage 1 Certain projectiles can be fired through the start-up gates.

• Stage 3 Spawn Teleporter When starting in the spawn closer to the first cap points of the track for the Payload. This is also the spawn with the large staircase. You are able to build your teleporter inside your spawn, by standing sideways to the gate.

• Spawn Exploit In some of the spawns there are holes in the middle of the ceiling that Demomen and Soldiers can jump up into. This doesn't really have any practical use except for avoiding death in Humiliation.

Granary

• Roof Holes: Above the RED team's 2nd respawn point, there is a large opening on the side where a BLU Demoman can spawn-kill the RED team by launching grenades into the respawn area. A BLU Soldier can also spawn-kill the RED team by launching rockets through the gap and also by rocket jumping into the gap and firing rockets directly down onto the RED team as they spawn. The BLU team's 2nd respawn area does not have this vulnerability.

Gravel Pit

• Roof Holes A hole in the roof of RED's respawn room allows weapon fire in both directions. The holes are between the boards over the window and big enough to allow most projectiles through.

• Spawn Building RED Engineers can build inside their spawn area by crouching on the office chair and facing the computer panel to its right. Once the vertical position of the blueprint changes to match the visible height of the panel (which only occurs in a particular spot), the Engineer can place their construction at a specific mid-air point (this essentially means repeatedly jumping while spamming the keys bound to Crouch and Primary Fire).

• Under Map 1 Cap A. By using the "Crouch Jump" exploit, you can get under the map at Gravel Pit Cap A. To do this, go to the tunnel next to Cap A. Build a Dispenser and use the "Crouch Jump" exploit to build a teleporter exit. After using the teleporter you built, you will need to crouch jump over a little gap in the small room you teleported into and you will be able to build Sentry Guns under the map.

• Under Map 2 Cap B. By using the "Jump through Walls" exploit, you can get under Cap B Gravel Pit. Go to the area, with the ramp, and then jump through the wall next to it.

Hydro

Skywalking is possible in one spot with the help of someone from the other team. To do this, simply have a Spy or Scout on the other team crouch jump on to your Dispenser, and then have them move over to one side of it, while you get on it. Then while they are crouched, crouch jump on top of them. Then have them stand up, and both of you crouch jump to get yourself on top of the lamp next to the door. Then try to crouch jump over to the spot where the teleporter was built, and try to build it there while you are jumping. Another way would be to have a Demoman or solidier shoot at your feet to boost you up to the top of the lamp.

Steel

• BLU Spawn Jumping above the BLU teams exit door to B before the round starts can cause the door to get stuck, making BLU team not able to leave through the B exit door.
• It is possible for a Pyro using the Backburner to attack any enemies that are sitting on point A from behind the sliding steel door.

Well

• Glitched Area Backroom (Final Control points in CP_Well and Intelligence room in CTF_Well) - Allows Soldiers, Demomen, and Engineers to get into the roof area and on the beams. Unconfirmed if an exploit or not as both teams can use it, higher areas are blocked by invisible walls and hasn't been fixed by Valve even though it's been around a while.

Patched Exploits

• Backstab Not Breaking Disguise - Whereby a Spy could backstab while retaining their disguise (Fixed in PC/Mac and 360 versions, broken in PS3 version).

• Bunny Hopping (Patched October 31, 2007) - A jumping technique that allowed players to move faster than they should by bypassing the velocity cap. (Fixed in PC/Mac versions, unknown in 360 and PS3 versions)

• Civilian Heavy - Whereby a Heavy could go into a reference pose by spinning the Minigun in spawn and switching class to Heavy. This is still performable, but another method is required. (Fixed in PC/Mac and 360 versions, unknown in PS3 version).

• Cloaked Backstab - Whereby a Spy could backstab while remaining Cloaked (patched in the PC and 360 versions; broken in PS3 version).

• Critical Hit Storing - Whereby players are able to store Critical hits in their weapon, especially annoying for Spies one-shotted by an Engineer's Wrench. (Fixed in PC/Mac and 360 versions; broken in PS3 Version).

• Crouch Jump - Whereby players are able to build Teleporters in places that they should not be able to, like in the enemy's or their own spawn. To do this, click crouch and then click jump to boost yourself through roofs partially, and you should be able to build if you are jumping correctly in the correct spot, like in the exploit at Dustbowl stage 1, cap 2. If you click crouch then jump then crouch again you will get stuck in the roof and may be able to build, if you are in the correct spot. You can also do this on top of your Sentry Gun/Dispenser, if you crouch jump onto it, or other objects in the game, like boxes and crates. (Patched in PC/Mac version, broken in 360 and PS3 versions)

• Game-play Demo Achievements - Whereby players could complete achievements by spectating other players who earned them. (Patched; existed in PC/Mac version only)

• Door Block Exploit - Allowed an Engineer to block spawn doors with the help of Teleporters. (Patched in PC/Mac and Xbox 360 versions; broken in PS3 version).

• Heavy Minigun Exploit - Whereby a Heavy was able to run and simultaneously rev up or fire their Minigun (Patched in PC/Mac and 360 versions; broken in PS3 version).

• Intelligence Teleportation - An exploit that allowed a player to teleport with the intelligence by dropping it next to the Teleporter, then picking it up as you teleported. (Fixed in PC/Mac versions; broke in 360 and PS3 versions)

• Melee Weapon Switching Exploits - Whereby players could attack and then instantly switch to another weapon and back again, making your next attack with the melee weapon land instantly, and stack on the attack you are already making. (Patched in PC/Mac and 360 versions; broken in PS3 version).

• Needle Boosting - Whereby players could be boosted by the Medic's Syringe Gun needles. (Fixed in PC/Mac version; broken in 360 and PS3 versions).

• Occlusion Visualization Cheat (cvar) - Allowed you to make use of the built-in Performance UI to enable visible occluders which would let you then see through walls (Patched in PC version).

• Permanent ÜberCharge

• Whereby a disconnected Medic could continue to ÜberCharge his target indefinitely.
• Whereby a Medic is able to give himself an ever-lasting ÜberCharge for the rest of the round. It requires a player to have unlocked the Kritzkrieg, and is done by switching to the Kritzkrieg whilst deploying the Über in the team respawn room. This can also be done the opposite way around - by switching to the Medigun, giving the player infinite Critical hits for the rest of the round. Standing near a Dispenser (or Payload while attacking), healing a team-mate, or being healed by a team-mate will however end the charge.

• Permanent Bonk - Where a Scout to be permanently bonked by drinking his can of bonk while sliding into a supply cabinet. (Patched; existed in PC/Mac version only)

• Teleporter Exploit - Whereby an Engineer could earn himself large amounts of points by using his own teleporter repeatedly. You can no longer earn points by using your own teleporter. (Fixed in PC/Mac version; broken in 360 and PS3 versions).

• Wall Sap - Whereby a Spy could attach an Electro Sapper to enemy buildings through thin walls. (Fixed in PC/Mac and 360 versions; broken in PS3 version).

• Cart Upgrading - Where BLU Engineers could "upgrade" the Dispenser on the cart by hitting where the blue stream comes out of the pipe on the cart, allowing it to dispense health faster than normal. (Patched; existed in PC/Mac version only)

• Level 3 Combat Mini-Sentry Exploit - Whereby an Engineer can build a Combat Mini-Sentry that fires rockets by building a Level 3 Sentry Gun, switching to Gunslinger (either by respawning or using resupply lockers), then re-deploying the Sentry Gun. The resulted Sentry Gun will take only 2.5 seconds to build like a Combat Mini-Sentry, but it fires rockets like a normal Sentry Gun. (Patched; existed in PC/Mac version only)

• Multiple Buildings Exploit - Several methods where the Engineer (or in some cases the Spy) could build multiple copies of all his buildings.

• • (Patched April 30, 2010 Patch)Whereby an Engineer can build an unlimited number of buildings by using the commands, "build 0 x", "build 1 x", and "build 2 x" (where x is the number of the building), and a Spy can build an unlimited number of Dispensers using "build 0 x" (where x is the number of the building). (Patched; existed in PC/Mac version only)

• • • (Patched October 18, 2010 Patch)An Engineer could pick up a building with the "Automatically respawn after loadout changes in respawn zones" option and change their loadout hereby glitching them into having a building being "carried" and allowing the Engineer to build multiple buildings using the "build x" commands. (Patched; existed in PC/Mac version only)

• Invisible Buildings Exploit (Patched October 18, 2010 Patch) Any Engineer picking up a building and immediately taunting would would be able to use the weapon they taunted with whilst holding this building. If placed back down with the "build x" commands, these buildings would be invisible, leaving only the sentry shadow, Dispenser screen or teleporter effect. (Patched; existed in PC/Mac version only)

See also

Team Fortress Classic Exploits