[[quoteright:350:[[Blog/WhatIf http://static.tvtropes.org/pmwiki/pub/images/RecoilBoost_8988.jpg]]]]
[[caption-width-right:350:[[http://what-if.xkcd.com/21/ Actually,]] [[AltText what I'm confused about]] is [[FridgeLogic "how"]].]]
->''"To put it another way: If I mounted a GAU-8 on my car, put the car in neutral, and started firing backward from a standstill, I would be breaking the interstate speed limit in less than ''three seconds''."''
-->-- '''Randall Munroe''', ''Blog/WhatIf'': [[http://what-if.xkcd.com/21/ Machine Gun Jetpack]]

Sometimes in video games lacking the LawOfInverseRecoil, firing rapidly in a direction opposite of where you want to go will give you a good push sideways or even upward.

While not possible with RealLife hand-held firearms, there's a grain of TruthInTelevision -- [[http://what-if.xkcd.com/21/ a few of the most powerful mounted machine guns actually exert enough force to propel a vehicle]], although they would also destroy large swaths of countryside in the process.

Compare NitroBoost and the more explosive RocketJump. Inverse of WeaponizedExhaust; this is essentially Exhaustified Weapon.
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!!Examples:

[[foldercontrol]]

[[folder:Action Adventure]]
* The maxed out machine gun in ''VideoGame/CaveStory'' has such a high recoil that firing downwards will propel you upward for as long as ammo lasts. On the flipside, firing ''upwards'' pushes you downwards when you try to jump.
** If you acquire an optional upgrade that increases your ammo replenishment rate and are smart with your ammo, you can fly indefinitely with it.
* In ''DevilMayCry'', leaping in the air and firing the pistols to keep yourself airborne is a strategy noted in the manual.
* ''VideoGame/{{Bioforge}}'' has a GravityScrew room where you orbit helplessly around an object in the middle. The only way to move around is to use your gun.
* In ''VideoGame/TheLegendOfZeldaTheMinishCap'', you have to use the Gust Jar in a few areas to move a floating platform around like a boat. Normally the jar sucks in items when it's being used, but also produces one big puff when stopped. The recoil is what moves the platform, rather than the suction.
* In ''{{Spelunky}}'' it's possible, when timed right, to use the shotgun's recoil to boost the height of your jump to go up three spaces instead of two. With the spring boots, it's then possible to go jump up to four spaces. This can be very useful for saving ropes when you do not have the climbing gloves or jetpack.
* The Flash Game ''[[http://www.newgrounds.com/portal/view/558562 No Time To Explain]]'' is a physics puzzler based around this trope. Basically, you have a BFG with such fierce recoil, you can use it as a JetPack-and do!
[[/folder]]

[[folder:First Person Shooter]]
* Early versions of the "Combat Construction" mod for ''[[{{VideoGame/Tribes}} Tribes 2]]'' had recoil all on the weapons. On the vast majority of them, the recoil was negligible. However, there was a fully automatic M60 machine gun, which had quite a large recoil, a massive magazine, and a constant stream of bullets. It effectively allowed you to fly around the map at a hundred [[superscript:km]]∕[[subscript:h]], when the average top speed for players in the mod was a tenth of that.
* ''VideoGame/{{Crysis}}'''s engine supports true weapon recoil, which has important effects [[spoiler:in space]]. One of its mods, ''[[MechWarrior Mechwarrior: Living Legends]]'', features a ground troop weapon (the [[ShockAndAwe Man-Pack PPC]]) that creates enough recoil with one shot as to provide you a good 15 [[superscript:km]]∕[[subscript:h]] in the opposite direction. The low gravity map provides extended entertainment when using this weapon, but it is regardless useful as an extra manoeuvring tool.
* All weapons in ''VideoGame/{{Marathon}}'' had some recoil. In low-gravity levels you could use the flamethrower as a makeshift jetpack. You could also use the recoil from the grenade or rocket launcher to reach otherwise inaccessible ledges or [[http://marathon.bungie.org/vidmaster/vidtipmyownprivate.html bypass significant parts of levels]], although in many cases this overlapped with {{Rocket Jump}}ing.
** By [[GameMod changing the physics model in Anvil]] you can also make the flamethrower act as an actual jetpack (give it high negative recoil) or change the pistol's firing animation to the MA-75B's to make it fully automatic. The combined recoil of each shot can allow you to hover with one pistol, or actually fly into the air ([[GoodBadBugs or through walls]]) with [[GunsAkimbo two]].
* In ''VideoGame/TeamFortress2'', one of the Scout's unlockable weapons is a shotgun with such ridiculous recoil that the player is also knocked back when it's fired in mid-air.
** Said weapon, when aimed downwards, can provide a third jump on top of the Scout's usual double-jump.
** Strangely, the Pyro's regular flamethrower alternate fire, the airblast, can reflect projectiles (including arrows!) but does not push the player around, only enemies. This is probably because the Pyro would get 10 extra jumps if the airblast did have recoil.
** Although, with proper timing, the Pyro is able to use the airblast to RocketJump off enemy rockets.
* ''{{Sauerbraten}}'' does this nicely vertically ''and'' horizontally. Combined with {{Rocket Jump}}ing, you can reach heights unbelievable to the uninitiated.
* In ''VideoGame/HalfLife1'', the Tau Cannon has enough recoil to send a player across the map and is put to good use in the fastest speedruns.
** And very notorious in Half-Life Deathmatch.
* On the ''VideoGame/KillingFloor'' map Moonbase, the low gravity allows for all shotguns to provide faster movement and, if the player has an automatic shotgun, an impromptu jet pack, if they are fired while the character is in the air. No matter which shotgun you use, you can easily outrun any specimen using a recoil boost.
[[/folder]]

[[folder:Hack And Slash]]
* In ''VideoGame/SengokuBasara'', it's possible for Nobunaga to use the recoil of his shotgun to essentially ''fly''.
[[/folder]]

[[folder:Miscellaneous Games]]
* Squall in [[DissidiaFinalFantasy Dissidia: Final Fantasy]] utilizes this in some of his attacks. They vary from giving a heel drop more kick, to repeatedly using the recoil to 'push' his weapon out of his opponent only to quickly thrust it back in, to propelling him forward at blistering speeds.
* In ''[[VideoGame/{{Glider}} Glider PRO]]'', rubber bands can be used this way to great effect (especially to break loose from [[ControllableHelplessness cobwebs]]), though the [[OneBulletAtATime two-shot limit]] complicates things somewhat.
* ''VideoGame/JetpackJoyride'' brings this to its logical conclusion, a machinegun jetpack.
* ''Videogame/{{Hedgewars}}'': The Sine Gun has some crazy recoil that can easily get you over an obstacle when shot downward. Just don't shoot it straight up or you'll [[UpToEleven take fall damage from the acceleration]].
* In ''Videogame/{{Star Control 2}}'', the Druuge's strategy focuses heavily around this. The ship is basically one giant cannon to begin with though.
[[/folder]]

[[folder:[=MMORPG=]s]]
* In ''VideoGame/MapleStory'', the gunslinger class has a skill called "Recoil Shot" to help propel itself backwards.
* The ''VideoGame/WorldOfWarcraft'' Redridge quest line features a moment where the re-assembled team of veterans travels across the lake to the orc fortress - and the team mage uses a fire spell aimed to the back of the boat as a makeshift jet engine.
* In ''{{VideoGame/Elsword}}'', the character Chung(or Lacher in japan) does this with his {{BFG}} . His "Shooting Guardian" promotion and its subsequent upgrade expand on this, getting additional air time with handgun shots.
* In ''VideoGame/GuildWars2'', the Engineer's Rifle has several skills like this. Overcharged Shot knocks the enemy away, but with such force that it blasts the Engineer back as well. Jump Shot has the Engineer point the rifle at the ground and use a high-powered shot to blast themselves through the air.
* In ''VideoGame/PhantasyStarOnline2'', the Rodeo Drive photon arte lets you ride a launcher for a few seconds by utilizing this. It's mostly meant to be used as an attack, however, and despite looking rather silly, is actually the most powerful move in the weapon's arsenal.
[[/folder]]

[[folder:Platform Game]]
* In the SNES ''Duck Dodgers'' game, firing your blaster in the opposite direction helps you make extra-long jumps.
* ''VideoGame/DukeNukemII'' had the flame thrower. It'll propel you upward if you fire it downward.
* Firing the Plasma Gun in ''VideoGame/{{Purple}}'' blasts you off to the opposite direction, allowing to jump over wide gaps by firing downwards.
* Several of the [[OneHundredPercentCompletion secrets]] in ''VideoGame/{{Iji}}'' can only be accessed using the horizontal recoil of [[{{BFG}} The Nuke]].
* In ''VideoGame/TheAdventuresOfRadGravity'', this is the only way to move around in the asteroid belt.
* ''[[VideoGame/NoTimeToExplain No Time To Explain]]'' has its entire gameplay built around this -- you have to use the recoil from your huge laser to RocketJump to platforms.
[[/folder]]

[[folder:Roguelike]]
* In ''VideoGame/NetHack'', you can use the recoil of throwing things to move about when levitating.
* ''[[VideoGame/AncientDomainsOfMystery ADOM]]'' has a [[FrictionlessIce low friction ice]] level, where you can't walk. Moving around there is done exclusively by the way of thrown item recoil boost (and kicking off walls). Getting recoil boost off a potion of uselessness is its only use - and for subverting the name, the gods themselves reward you.
[[/folder]]

[[folder:Shoot Em Up]]
* The 2D platform shooter ''[[http://selfkill.com/webv3/content/ Soldat]]'' has a minigun that has a very high recoil and provides leverage if fired downwards.
* This is actually part of the design for the Druuge Mauler in ''StarControl II''. The recoil of its weapon is so fantastic that it propels you quite powerfully in the opposite direction. A couple of shots can put you at maximum speed. This is great because the ship's engines are pretty slow. Also [[JustifiedTrope justified]] because it's InSpace. Strangely, none of the other ships, including those that use projectile weapons, exhibit any form of weapon-induced inertia.
* Taken to its logical extreme in the retro flash game ''Maverick'', where the point of the game is to travel around on the recoil of your two six-shooters. Which naturally have BottomlessMagazines.
* ''Videogame/{{Liero}}'' had ridiculous recoil on several weapons. Sometimes it was even more efficient to recoil-jump than using the Grappling Hook!
* In ''VideoGame/{{Touhou}}: Imperishable Night'', Marisa's Last Word spellcard "Blazing Star" is her using [[KamehameHadoken Master]] [[WhenAllYouHaveIsAHammer Spark]] in this fashion. While shooting at you.
[[/folder]]

[[folder:Survival Horror]]
* In freeware survival game ''{{Notrium}}'', the SniperPistol packs massive recoil and can be used for fast travelling in lieu of the Propulsion Boots.
[[/folder]]

[[folder:Turn Based Strategy]]
* In each of the first two ''VideoGame/SuperRobotWarsOriginalGeneration'' games, the Hagane fired its [[WaveMotionGun Tronium Cannon]] with the compensators disabled, allowing the severely damaged ship to escape the map from the recoil. The first time, it's done to breach the artificial planet Neviim by firing point blank. The second is generally considered a [=CMoA=] for Captain Daitetsu Minase, especially considering that [[spoiler: he was literally dying from a mortal wound at the time]].
[[/folder]]

[[folder:Wide Open Sandbox]]
* ''VideoGame/GrandTheftAutoIII'' and ''VideoGame/GrandTheftAutoViceCity'' have the Rhino, a working tank. If you rotate the turret to face behind you, firing a shot propels you forwards. Timing this right can give you a much higher top speed, and, with the correct cheat, allow you to fly. [[RefugeInAudacity In a tank]]. Sadly, because of changes in the control scheme, the same trick is pretty much impossible to pull off in ''VideoGame/GrandTheftAutoSanAndreas'' without the player crashing the Rhino into a wall.
* ''CortexCommand'' provides several weapons with nice recoil. The heavy digger can be used with very light actors (such as skeletons) to lift them in the air or cushion their fall. Some guns have been designed that have so much recoil that they must be fired with a massive mech; you can fire them with any actor, but most will just [[LudicrousGibs explode]].
* In ''Videogame/SpaceEngineers'', the [[GatlingGood gatling guns]] on small ships and the handheld assault rifle will send the user/ship flying backwards with sustained fire.
[[/folder]]

!!Non-video game examples:

[[folder:Anime And Manga]]
* In CowboyBebop episode "Heavy Metal Queen", Spike propels himself shooting his pistol after jumping loose in a zero-gravity space.
* Technically, it's not a gun, but it's the same idea: In ''{{Dragonball}}'', free-falling KidHero Goku finished off the original Demon King Piccolo by firing a [[KamehameHadoken Kamehameha]] at the ground, [[RammingAlwaysWorks ramming into him with his one good fist]] (his other arm was too injured to move to form the attack, so no, [[WhyDontYaJustShootHim he couldn't have just shot him]]).
** He did the same in the Tenkaichi Budokai against Krillin and then Tien. Against Krillin he used it as part of a combo where he knocked Krillin a good horizontal distance, jumped into the air, then propelled himself forward and into the ground into his opponent. When he used it on Tien both are free-falling, and the first to touch the ground will lose. Goku fires the Kamehameha twice in succession: One to thrust himself at Tien, knocking him down so he couldn't fly and one to gain some more height through recoil to ensure Tien will hit the ground first ([[DiabolusExMachina Goku ends up losing anyway, because he hits a car before Tien gets to the ground]]).
** This trick is used even earlier by Master Roshi to push himself back into the ring, a trick Goku imitates in the very same fight.
* In an early ''Anime/AfterWarGundamX'' episode, Garrod uses the Satellite Cannon to propel himself and Jamil away from a disused nuclear power station that was GoingCritical.
* In ''Anime/SpaceBattleshipYamato2199'', the ship escapes an enemy warp gate hub by firing the WaveMotionGun and deactivating the gravity brake to shoot through their exit gate while destroying the hub's power source and a big piece of the enemy fleet gathered there.
** They also did it in Yamato 2 (the Comet Empire series) when the Argo was trapped in an electromagnetic tunnel and the only way out was deactivating the recoil systems and shooting the ship "out like a pea".
* In ''LightNovel/ACertainMagicalIndex'' and ''Manga/ACertainScientificRailgun'', Shizuri Mugino can cushion her fall or launch herself through the air by firing her [[FrickinLaserBeams Meltdowner]] downwards.
* In episode 4 of the ''{{Manga/Nobunagun}}'' anime, Shio uses the recoil from [[GunsAkimbo Nobunaga's Three-Line Volley]] to help steer herself and Jack The Ripper while the two are free-falling through a hurricane, with the latter attempting to destroy the eggs from the [[MonsterOfTheWeek Evolutionary Invasion Object]] they just killed before they make landfall on the coast of Florida and hatch in the storm's aftermath.
* In ''Anime/MobileSuitGundamMSIGLOO'', during the Hidolfr's battle, it gets a Zaku arm lodged in its tracks, immobilizing it. Since it needs to turn around in a hurry, the pilot fires its [[{{BFG}} 300mm Cannon]], the recoil of which lifts the tank halfway off the ground and allows it to use its other set of tracks to turn around before falling back down.
[[/folder]]

[[folder:Comic]]
* The French series {{Donjon}} has Marvin obtain an IronMan-esque suit of armor that has nitroglycerine-based cannons mounted in the arms. He uses them to fly around.
* IronMan is something of an inversion of this. The purpose of the propulsors ''is'' to boost him, but he quickly realized that he can use the opposing force to blast his enemies.
[[/folder]]

[[folder:Film]]
* In ''Film/TheATeam'', this is done with a tank's main gun. The tank was dropped out of a plane, but it lost two of its three chutes. The recoil was used to aim the tank towards a lake and then to soften the landing.
* In ''Film/TotalRecall2012'', this happens. Justified in the fact [[spoiler: there is no gravity at the center of the earth.]]
[[/folder]]

[[folder:Literature]]
* [[TheHero Wax]] uses a large-caliber gun to push himself sideways when he's flying around at significantly reduced weight in ''[[{{Mistborn}} The Alloy of Law]]''.
* In ''Literature/HaloTheColeProtocol'' Lieutenant Jacob Keyes orders his men to use this technique to escape from a Insurrectionist freighter. Justified in that they're all in space so their guns would act like backup thrusters.
* In ''Literature/KingDavidsSpaceship'', the spaceship in question uses a purpose-built autocannon for propulsion, similar to a scaled-down OrionDrive.
* {{Exploited}} {{inverted}} in ''Literature/StarCarrier: Earth Strike''. Marissa Allyn uses the recoil from her [[SpaceFighter Starhawk's]] RFK-90 kinetic kill cannon to increase her time on target when attacking the Turusch flagship ''Radiant Severing''.
[[/folder]]

[[folder:Live-Action TV]]
* ''Series/{{Farscape}}''. John Crichton does this with a pulse rifle when cast adrift in space, even though the recoil of an energy weapon should be miniscule.
[[/folder]]

[[folder:Tabletop Games]]
* The "Recoil Rocket" perk from ''{{GURPS}}: GunFu'' works this way.
* From TabletopGame/{{Warhammer 40000}}, the [[OurOrcsAreDifferent Orks]] believe that a proper gun should be big, loud, and gives a satisfying bang when it goes off (of course, being heavy and sturdy enough to use it to bash with is fundamental). Most of them modify their guns to produce quite a kick, impractical as it makes it, [[ATeamFiring even for them]]; and even have looted tanks modified for bigger booms and more recoil.
[[/folder]]

[[folder:Web Comics]]
* ''BobAndGeorge'' have touch-and-dies character Ran equipped with a crazy-strong gun that can ''lift him off his feet'' with the recoil. And Ran is made of VERY heavy, cheap parts.
* From ''Webcomic/DarthsAndDroids'', as the characters are [[http://darthsanddroids.net/episodes/0478.html trying to survive a spaceship crash]] and looking for something CrazyEnoughToWork:
-->'''Anakin:''' I pull back on the control stick. We need to come in level.\\
'''R2-D2:''' Not crazy enough!\\
'''Obi-Wan:''' Aim for that runway. It could be long enough.\\
'''R2-D2:''' Not crazy enough!\\
'''Anakin:''' I raise the flaps to increase our drag.\\
'''R2-D2:''' Not crazy enough!\\
'''Obi-Wan:''' I dump the excess fuel!\\
'''R2-D2:''' Not crazy enough!\\
'''Anakin:''' No! Wait until just before we hit the ground. I'll fire all our missiles downwards at point blank range. The explosion will cushion our landing.\\
...\\
'''R2-D2:''' ''Too'' crazy!\\
'''Anakin:''' Trust me.
* A short storyline in ''TurnSignalsOnALandRaider'' has Kren and Frep flying an [[GatlingGood Assault Cannon]] and steering with the recoil. They challenge an Eldar hovertank, but lose horribly.
* The concept is scientifically examined in [[http://what-if.xkcd.com/21/ this]] ''What If {{Webcomic/xkcd}}''. It turns out that an AK-47 has a higher thrust-to-weight ratio than the Saturn V rocket, though bringing more than 250 rounds of ammunition or having it lift anything heavier than a squirrel would not work; a [[MoreDakka GAU-8 Avenger]] would make a respectable rocket engine (breaking the interstate speed limit in three seconds); and a [=GSh-6-30=] would be even better, though would likely kill the user or break the vehicle apart in the process.
* In ''Webcomic/EightBitTheater'', Black Mage [[http://www.nuklearpower.com/2002/12/24/episode-229-blast-off/ creates a rocket boat]] by standing on an ordinary boat and firing a [[KamehameHadoken "Boat-doken"]] backwards.
* One of Sergeant Schlock's signature moves in ''Webcomic/SchlockMercenary'' is to disable the recoil compensation on his plasma guns, allowing him to fly as he pleases. He first discovered this ability after being pitched off of a skyscraper. (The narrator comments, "what's the difference between a plasma cannon and a plasma rocket", then cuts to Schlock reading the user's manual to find the answer.)
[[/folder]]

[[folder:Web Animation]]
* Ruby and Yang's combat styles in ''WebAnimation/{{RWBY}}'' involve using the recoil of their sniper rifle/scythe and gauntlet/shotgun [[SwissArmyWeapon Swiss Army Weapons,]] respectively, with deadly efficiency. Primarily, they use this to blow themselves across the battlefield; Ruby also does this to pull her weapon right through her enemies.
** Also used by Pyrrha (her spear/rifle), Nora (her hammer/grenade launcher), and Blake (her gun/whip) in similar fashions. If a fight scene in ''RWBY'' doesn't involve at least one recoil boost then it was probably a short one.
[[/folder]]

[[folder:Western Animation]]
* One episode of ''DastardlyAndMuttleyInTheirFlyingMachines'' has Dirk's plane nosediving to the ground. He manages to brake his descent by firing his plane's machine gun continuously.
** A similar gag once happened in ''WackyRaces'' where the Anthill Mob fired machine guns for a speed boost.
* Azula and her father Ozai in ''WesternAnimation/AvatarTheLastAirbender'' are capable of NotQuiteFlight using firebending to propel themselves. (Although, Ozai is only shown doing this during [[SuperMode Sozin's Comet]]).
* The grandson of Zuko from ATLA, Iroh, is shown to be quite skilled at this in ''WesternAnimation/TheLegendOfKorra'', jumping between aircraft in a mid-air battle. However, given that he isn't comet-enhanced like Ozai was, he can't maintain it continuously and instead commandeers aircraft whenever possible. Mako and Korra also use the ability briefly to do a wall-run during Amon's rally, and in the second season they use the boost to get a plane in the airway when the runway was too short.
* Yosemite Sam of the ''WesternAnimation/LooneyTunes'' has been known to propel himself into the air by firing both his revolvers downwards.
* BOTSMaster has the BOYZZ crashing towards the moon at one point with failing retro-rockets, so they open up their cockpits and all open fire at the ground to slow themselves down. Runs into the same energy weapons = little recoil issue that previous ones do. However, they just needed to slow down a little, and they were firing ''a lot'' of guns.
[[/folder]]

[[folder:Real Life]]
* This would work with hand-held weapons in a microgravity environment, and is essentially a small-scale version of ExplosionPropulsion. Unless specially modified for vacuum, however, many guns wouldn't work in space. And trying this on a space station would be... [[ExplosiveDecompression inadvisable]].
** Experiments have been conducted on the feasibility of using railguns or mass drivers as spaceship propulsion, which essentially would make your entire spaceship a backwards-firing gun.
*** In effect, pretty much anything other than a ReactionlessDrive works like this - rockets and ion drives are just throwing lots of little particles away from you at extremely high speeds, thus allowing for WeaponizedExhaust.
* In an inversion, the recoil from a GAU-8 Avenger on the A-10 Thunderbolt is severe enough to give the plane a noticeable drop in speed with each burst, though never quite enough to actually stall it.[[note]]Indeed the GAU-8 at full auto produces 5 tons of force as recoil, one of the A-10's engines produces 4 tons, if the A-10 only had 1 engine or had 2 guns, the entire thing would be flying backwards if you used all 4 of them at once[[/note]] This is actually helpful, since at slower speeds it's easier to aim (and the A-10's [[MightyGlacier not about to outrun anything at the best of times anyway]]).
** Very noticeable with First World War biplane aircraft where forward-mounted MG's could exert a noticeable braking effect on planes travelling no faster than 80 - 100mph. Second world war planes modified to carry heavy cannon could also be slowed at the moment of firing: the JU-87 Stuka modified to carry a pair of 37mm anti-tank gun under both wings for instance, or the HS-129B-3 carrying a 75mm cannon under the fuselage.
[[/folder]]

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