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'''''Garry's Mod''''' is an independent mod of the Valve game ''VideoGame/HalfLife2'' created by Garry Newman. Originally just ''Half-Life 2'' with the rope, manhack and rollermine guns, it has evolved considerably since then. Rather than taking place in any sort of universe, the game is a sandbox where you can construct and demolish buildings using props from various Source games like ''VideoGame/CounterStrike'', ''VideoGame/TeamFortress2'', and ''VideoGame/ZenoClash''. The ragdolls and even [=NPCs=] from these games are also at your disposal. Considered one of the most popular {{machinima}} devices as of now. The game uses a lua scripting format for its weapons and events, meaning it's possible to code your own weapons into the game. Currently, it's available on Valve's {{Steam}} client [[http://store.steampowered.com/app/4000 for download]].
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!!This sandbox provides examples of:
* AbnormalAmmo: Very frequent. One of the sample scripted weapons (or [=SWEPs=] in community jargon) included with the game, the Flechette Gun, is exactly like the USP from ''VideoGame/HalfLife2'' only it shoots an [[BottomlessMagazines endless stream]] of the exploding rounds fired by the Hunter enemy from ''Half-Life 2: Episode 2''. You can build prop cannons that can shoot everything from sawblades to watermelons. And let's not get started on the various [=SWEPs=] devised by the community...
** The eponymous creator of the game, once scripted an AK-47 SWEP that shot ''babies'' as ammunition. In response, someone created a Baby SWEP that ''fired AK-47s'', and another person made another AK-47 SWEP that could shoot either babies or ''sawblades''.
** A mod of the already awesome molten rebar crossbow made it shoot sawblades.
** One SWEP, named the "Scavenger Cannon", is, essentially, the [[VideoGame/{{Fallout3}} Rock-It Launcher]] - suck up any prop you want with it and then launch it, sort of like a rapid-fire gravgun.
* ArtificialStupidity: Most spawned [=NPCs=] will stand ramrod still, firing wildly at anything that comes nearby, ''unless'' the map they are spawned on is "noded" properly to allow for complex AI.
** Or if the user downloads one of the several mods that allow manipulation of NPC behavior. Can be useful for {{Machinima}}.
* BareYourMidriff: Nahka's ports of his Oblivion characters all have outfits like this.
* BeamSpam: The [=GCombat=] and Spacebuild Enhancement Project addons present many different ways to do this.
* {{BFG}}: The [[VideoGame/{{Doom}} original]] has been made into a scripted weapon, complete with [[{{Retraux}} the original sprite as the viewmodel]]. And that's before we go into many of the community made sweps such as a [[{{NukeEm}} Davy Crocket]].
* BraggingRightsReward: One so blatant it just ''has'' to be a deliberate parody. You get an achievement each for ''starting'' the single-player and multiplayer modes.
* BrownNote: Somebody programmed [[https://www.youtube.com/watch?v=TA70-A3IMoY&channel=Moofheadx a vuvuzela in]]. It kills most enemies that it's used against instantly.
* CameraAbuse: The Camera ''tool'' is very easy to knock out of place if it's not welded to something.
** Getting slapped by [=NPCs=] or falling objects while wielding the Camera gun also counts.
* CharacterCustomization: Most RP servers have this, in some form or another and to varied extents.
** As of the Garry's Mod 13 update, the player can now modify the color of their playermodel and the glow of their physics gun.
** PAC 3 allows even more in-depth customization of your character.
** Another mention is the Customizable [[{{WesternAnimation/MyLittlePonyFriendshipIsMagic}} Ponies]] addon.
* DesignItYourselfEquipment: Sandbox, ''[=ACF2=]'', ''Spacebuild'', and a variety of other mods have players building vehicles and other contraptions either for fun or for objectives, such as fighting in ''[=ACF2=]''
* Dhampir: Nahka's model Sandra the Daywalker is assumedly one of these.
* ExplodingBarrels: Plenty abound. Many prop packs include their own variations.
* FirstPersonSnapshooter: The Camera allows you to take pictures from in-game and have them saved to file. Hence, there have been many WebComics created via Garry's Mod.
* GameBreakingBug: Given that this is a game mod with hundreds of player made addons, you ''will'' crash more than once.
* GameMod: Not only is the game itself this, but it has another built in one where you race watermelons.
** And build tanks.
** And build spaceships.
** And fight zombies.
** And be a zombie.
** And roleplay.
** And Perform LeParkour.
** And chase/get chased by [[VideoGame/{{Mother3}} the Ultimate Chimera]].
** And play tower defense.
** And play fort wars.
** And play RTS as a god.
** And play RTS with watermelons as the units.
** And [[VideoGame/TroubleInTerroristTown find out who the traitor is]].
** And get stuck on an island.
** And create a boat to survive a flood.
** And [[VideoGame/PropHunt disguise yourself as inanimate objects]] for a game of HideAndSeek.
** And film movies.
** And watch movies.
** [[VideoGame/ElevatorSource And ride an elevator.]]
** And race jeeps.
** And run from trap masters through an obstacle course.
** [[VideoGame/GModTower And fool around in a big tower with a bunch of strangers.]]
** And finding out who the Murderer is.
** And using Explosive Watermelons to kill people.
* {{Griefer}}: So very much. Much like the "Noob" example below, they are called Mingebags. Examples include:
** Killing while building
*** Killing with build objects
*** Killing with coded objects
*** Killing... Well, there are many ways.
** Crashing the server by WreakingHavok a little ''too'' much.
** Playing sound files -- especially low quality ones -- without anyone's consent (or approval)
** Blocking off the spawn so that no one can get out.
** RDM'ing [[note]]Randomly killing somebody for no reason, often in VideoGame/TroubleInTerroristTown or Murder (when someone with the gun randomly starts shooting other people without good reason to suspect them being the murderer or traitor)[[/note]].
* GunAccessories: Spy's Customizable Weaponry mod which allows the customization of stock ''VideoGame/CounterStrike: Source'' weapons such as {{Hollywood Silencer}}s, various scopes and sights, front attachments such as a bipod, front grip and GrenadeLauncher, a [[{{MoreDakka}} beta-c drum magazine]], various ammo types. Extra Customizable Weaponry adds even more such as [[{{RevolversAreJustBetter}} revolvers]] and [[{{ShotgunsAreJustBetter}} more shotguns]]. Think of it as customizable GunPorn. It's also notable in which it averts several gun tropes such as ShortRangeShotgun. The successor addon, Fire Arms: Source tones down the customization but improves on other fronts.
* HitPoints: 100 of them. You can also have an armor meter, as if you were wearing [[VideoGame/HalfLife an HEV suit]].
** If you downloaded Gm{{VideoGame/Doom}} and mounted the correct .wad file then you can have 200 of either of them, depending if you picked up a soulsphere, mega armor or a megasphere. Due to Source's method of handling armor points, you don't get the 3/4 damage reduction like actual ''{{VideoGame/Doom}}''.
* HumanoidAbomination: A lot of them. Special mention goes to the Vagineer, the Engina, Dic Soupcan, and many more.
* HumongousMecha: Effectively impossible to build (and remain upright) in the vanilla game, but various Expression 2 chips allow players to animate their mechs. Mechs from ''TabletopGame/BattleTech'' / ''Videogame/MechWarrior'' and ''VideoGame/ArmoredCore'' are popular, but one-to-one scaling [[SquareCubeLaw typically presents a very large problem]] - mechs will often either be lighter than styrofoam or denser than depleted uranium, in order to prevent them from spazzing.
* HyperspaceArsenal: You can keep all of the weapons in the "weapons" section of the spawn menu on your person, which can lead to a RummageFail. Better yet, you can't drop weapons.
* ImprobableWeaponUser: You can kill people not only with guns, but also with ''their ammo pickups.''
* InfiniteFlashlight: Compared to the {{ten second|Flashlight}} one of the original games.
* IntercontinuityCrossover: Various mods allow players to import characters from other non-Valve franchises, from... well, ''[[UltimateShowdownOfUltimateDestiny everything]]''.
* JokeCharacter: The Hobo from [=DarkRP=]. No salary, [[BodyHorror looks like a corpse]], and only has the ability to throw crap at people (literally).
* LoadsAndLoadsOfLoading: Downloading excessive numbers of addons can result in very long load times. Garry did an automatic survey of GMOD users, and there was one person who had an average loading time of over 25 minutes.
** Especially during the short time that the game had a strange error which multiplied load times by a factor of about five. 15 minutes just to get on to a regular server. If you got kicked, it might as well have been a fifteen-minute ban from every server in the game.
* LeParkour: Possible using the Parkour Swep (a scripted weapon which allows you to jump large distances and negates falling damage), Perfected Climb Swep (a scripted weapon that allows you to climb and grab onto ledges), Smod Leg (The glorified kick from SMOD), Gordon's Fists, and a big, urban themed map (oh let's say GM_Bigcity or Gm_madness~city)
* LudicrousGibs: The [[http://www.garrysmod.org/downloads/?a=view&id=52104 Dismemberment Mod]].
** The [[http://www.youtube.com/watch?v=MeHfNcleaOo Gore Mod]] probably takes home the gold, though.
* {{Machinima}}: Tons of it and then some.
** ''Webcomic/{{Concerned}}'' was made using almost solely Garry's Mod.
** ''Machinima/TheGModIdiotBox'', courtesy of DasBoSchitt.
** The video versions of ''Fanfic/HalfLifeFullLifeConsequences'', in all of its insane glory.
** RubberFruit used to use GMod to make some of the most bizarre animations you'll see online.
** WarOfTheServers translates the HG Wells classic into a war across the Gmod communities.
** Just search "[=GMod=]" on Website/YouTube, you'll get ''thousands'' of results.
* MagnetHands: It doesn't matter if you're underwater, in outer space, on fire, flying at 200/kph, you'll be holding your tool gun / Gravity Gun / Physgun in an indestructible death grip.
** Until CriticalExistenceFailure hits, and then the weapon will disappear entirely.
* [[TheManyDeathsOfYou The]] [[http://www.youtube.com/watch?v=aaaFpKqUGAc Many]] [[http://www.youtube.com/watch?v=65w1uCTDRuI&feature=channel Deaths Of You]]
* MassiveMultiplayerCrossover: There are a lot of models available for this game. Many of them are ragdolls of characters from other games, which can be used to create some rather interesting scenes if you're good at posing.
** This is because most models need only be hexed and then imported.
* MoreDakka: The Turret tool, among other things.
* MuzzleFlashlight
* NintendoHard: Posing is rather tricky, even if you know what you're doing.
** Large, gangly ragdolls can be a nightmare, and can potentially kill you if you're too close while the physics causes them to flail about because you moved their arm a pixel in the wrong direction. The author of ''Webcomic/{{Concerned}}'' once got killed while posing a Strider, as the Physics Gun jerked the Strider's leg too fast at him. Can be offset by placing heavy objects near them, to help control their jerkiness. Possibly-relatedly, he only had a posed Strider show up in one other comic, nearly two years later.
** Finger slipped from E to R when pointing at the ground with the Physics Gun out? Say bye to your contraptions!
* {{Noob}}s: Called "Mingebags" by the community, after the default player name before the game was updated to use your Steam screen name as your player name.
* NothingIsScarier: As you'll often be TheAloner (unless you're in Multiplayer, of course), this can kick in on night-time maps, or just in general. Also how most horror maps do their business, since the closest thing to getting scary with Mooks are the regular Headcrab Zombies (packaged with GMod), and those often get boring fast. Combined with HellIsThatNoise, maps like Gm_Ghosthunt and Gm_Scream have terrified audiences without even showing an enemy.
* NotQuiteFlight: Balloons+thrusters, typically combined with the airboat. It is possible to ride sufficiently large props via phys gun or thruster use, but good luck getting down (alive anyways).
* NukeEm: Garry's Bombs, and Teta_Bonita's nuke addon (which allows you to choose your [[IncrediblyObviousBomb preferred]] [[DeathFromAbove method]] [[{{BFG}} of detonation]]).
* OffscreenTeleportation: The Harmless Companion Cube addon. Just don't forget to delete it before you turn away from it. Whatever you do... Don't freeze it. That just makes it ''stronger''...
** The workshop now has [[Series/DoctorWho Weeping Angels]]. And [[Wiki/SCPFoundation SCP-173]].
* PercussiveMaintenance: The easiest way to fix a spazzing contraption (when the physics engine breaks and sends everything spinning around wildly out of control) is to pull out the Physgun, grab the contraption, and repeatedly smash it against the nearest wall until it stops spazzing. Unfortunately, delicate player-made mechanical objects (such as guns and engines) require much more finesse to fix - performing PercussiveMaintenance on these will usually make the problem worse.
* PlayerVersusPlayer: Straight Deathmatch servers exist, however, there are many "build to fight" servers, where players build contraptions to fight each other with. Like weaponized windmills.
* RagdollPhysics: Most Garry's Mod {{Machinima}} depends on it; There are maps and gamemodes dedicated to slaughtering ragdolls in the most gruesome ways imaginable.
* RealityBreakingParadox: The game does ''not'' like it when the Havok physics engine says an object should have an orientation of ''[[AlienGeometries infinite angles]]'', and will instantly crash.
* RuleOfFun: Oh so much. Highlights include building random things out of props, destroying them, making NPC's fighting each other, destroying them, blowing up stuff with nukes, downloading addons, destroying them, etc.
* RummageFail: As mentioned above, you may find yourself doing this after an extended session of messing around with [=SWEPs=]. It doesn't help that only a few user-created ones can be dropped and the only way to reset your arsenal without losing your ''VideoGame/HalfLife2'' weapons, physgun, and toolgun is dying, leading to a rather odd example of DeathByMaterialism.
* RunDontWalk: In the default controls, the Walk function isn't even macroed to a key (back when it was, the corresponding function didn't even ''exist''). Although, running ''is'' faster.
** If players want to move slowly, they generally crouch anyway. The only difference between that and walking is the animation and the smaller hitbox. And the fact that it's bound by default.
*** The only problem with crouching is that it changes your viewpoint (I.E. where you're pointing your physgun), meaning that if your posing a spazzy ragdoll or prop like a Strider or a Sentry Gun, you risk it spazzing out from the sudden motion; most players avoid this by freezing whatever they're posing, ''then'' crouching.
* ScienceFiction: The Spacebuild gamemode, usually used in combination with the futuristic props of the Spacebuild Enhancement Project. [[MohsScaleOfScienceFictionHardness Not that's there anything stopping you from just sticking a oxygen tank on a WW2 fighter and flying off to Neptune, though.]]
* SelfDeprecation: The Steam Trading Card pack for Gmod has the "Missing Texture" card, showing the infamous purple-and-black checkerboard that plagues so many custom maps and models. "Invasion" shows the Mingebag - the unanimated default model from ''Gmod 7'' and prior versions; Kleiner with his arms sticking straight out, a physgun in his crotch and his legs ramrod straight.
** Some of the badge levels from the game as well such as [[{{SpamAttack}} Spammer]] and [[{{GameBreakingBug}} Crasher]].
* SillinessSwitch: The "[[{{TalkLikeAPirate}} Pirate]]" language from Gmod 13.
* {{Skybox}}: Most decent maps will have one of these. The really good maps will have a detailed, 3D skybox. You can even put props and ragdolls inside them to make them appear massive. The only drawback is that they do get confusing on maps like the new flatgrass, nothing is more startling then crashing into the InvisibleWall in your helicopter, plane, car or whatever vehicle you built.
* SuperNotDrowningSkills: You can stay underwater as long as you like with no ill effects, due to [=GMod=] making your suit energy infinite.
* SurrealHumor: Garry's Mod is frequently used as a medium for this. Google "RubberFruit", for instance.
** Elevator: Source derives half of it's humor from the fact that you will more often than not find a beach and a detective's office within two floors of each other. ''Inside an apartment complex.''
* TalkLikeAPirate: Similar to ''{{Minecraft}}'''s example, Pirate speech can be turned on via the language options.
* TankGoodness: The premise of the [[http://wiki.garrysmod.com/?title=Armored_Combat_Framework ACF (Armored Combat Framework)]] addon. Players build tanks, add armor panels, stick in ammo caches, give them guns and then duke it out.
* TelevisionIsTryingToKillUs: Several LetsPlay videos of some gametypes, particularly ''Murder'' and VideoGame/TroubleInTerroristTown, show behaviour that is only acceptable in smaller groups of people who know each other, not on larger servers when playing with other strangers, such as RDM [[note]]"Random Death Match", for when you are killed for no real reason[[/note]] or talking outside of ingame chat. Outside of a private server, this can easily get you banned.
* ThrowItIn: At one point, Father Grigori was mistakenly put in the "animals" NPC section, but Garry found it amusing due to just how accurate that was, and let Grigori stay in the animals section.
* VehicularCombat: The ''Armored Combat Framework 2'' mod allows players to design their own vehicles from scratch, then fight them against other players using [[SimulationGame realistic weapons]] which take into account ballistic trajectories, penetration power, and [[MadeOfExplodium sympathetic ammunition explosions]]. The mod also offers a huge selection of [[TechnologyPorn engines, transmissions, and differentials]] to power vehicles with more realism than standard Gmod thrusters.
* WideOpenSandbox: You're not gonna run out of stuff to do.
* WimpFight: The most effort ever put into fight scenes in comedies usually involve welding invisible thrusters to the characters' limbs and holding down the ignition button. Justified, as it's meant to be funny, not serious, and it is indeed funny.
** One of the best examples is [[TheGModIdiotBox Das Bo Schitt's]] "Billy Mays Vs. Vince Offer". It's hilariously epic due to the incredibly over-the-top slap-fights and body slams.
* WreakingHavok: Find [=GCombat=], or Garry's Bombs, or ''any'' addon involving large amounts of explosives, and go wild with them.
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