[[quoteright:256:[[VideoGame/SuperMarioRPG http://static.tvtropes.org/pmwiki/pub/images/Super_Mario_RPG_big_bomb.png]]]]
[[caption-width-right:256:Showing a shock face doesn't even cover this.]]

->'''Burt:''' That's 2.5 tons of high explosives, Earl!\\
'''Earl:''' [[ComicallyMissingThePoint You mean that's not enough? Oh Burt, don't tell me it's not enough!]]\\
'''Burt:''' ''Not enou...'' [[DontAskJustRun Never mind, just run!]] ''Run!''
-->-- ''Film/{{Tremors}} II''

Any bomb that is at least as big as a car (either as one explosive or a cluster), is truly made to make a huge blast.

The reason is that when you have StuffBlowingUp, it's often good to have [[BiggerIsBetter bigger explosions]]. But that doesn't necessarily mean the actual bomb has to be large, especially these days with high yield explosives. Before then, huge bombs were the easiest way to make it clear the blast would be huge (in fiction and RealLife). With high yield in a large amount, the blast goes UpToEleven.

May overlap with the IncrediblyObviousBomb, because it's going to be hard to hide something this big.

Compare {{BFG}}, {{BFS}}, MoreDakka, WaveMotionGun, KillSat, MacrossMissileMassacre, ThereIsNoKillLikeOverkill, AwesomenessIsVolatile, OutrunTheFireball.

Not to be confused with [[BoxOfficeBomb a work that flops horribly]].

'''This is about the size of the bomb. The actual explosion, its effects, or even the materials of the bomb, are irrelevant to whether an example counts.'''
----
!!Examples:

[[foldercontrol]]

[[folder:Anime and Manga]]
* The [[http://members.optusnet.com.au/~cyc01/nsm.htm Neutron S Missile]] from ''GenesisClimberMospeada''. When all you got is nukes, make them a ''mile wide''.
** The same missiles naturally are used in ''{{Robotech}}'' But ''[[RobotechTheShadowChronicles The Shadow Chronicles]]'' reveals that instead of being enhanced nukes, they would've created a ''black hole'' and destroyed the Earth. The EEF was understandably not happy when they found out.
* In ''Manga/OnePiece'', as a part of their plot to take over Alabasta, baroque Works set a giant bomb in the big clocktower. It explodes, but only after it had been, at the last second, flown up out of the city.
* Deidara from ''Manga/{{Naruto}}'' has two of these: C3 plays this straight, as it is the size of a car (though [[SleepModeSize before being used it's about the size of a basketball]]) and powerful enough to destroy most of a village. On the other hand, C4 subverts this as it's is a doll of Deidara which is about ''3 stories tall'' and explodes ... into a cloud of dust [[spoiler:which are actually ''millions of microscopic bombs'' that go into the bodies of organisms before exploding.]] On top of that, [[spoiler:his strongest bomb, C0, isn't large either, as it's simply [[TakingYouWithMe himself]].]]
** The Kyuubi can make a Tailed Beast Bomb up to 10 times his size. [[spoiler: A Combined Tailed Beast Bomb is far larger, and the explosion itself can devastate a small country.]]
* ''HunterxHunter'' features a device called "Little Rose". Said device combines this trope with WhyAmITicking and produces a cloud in the form of a rose flower when [[TheDeadliestMushroom used]]. While officially banned as inhuman, a sufficiently trustworthy character mentions that those deviced were embedded in millions. In the CrapsackWorld of the series, death by suicide bombing is better than ending up as either [[BodyHorror chimera]] [[WhatMeasureIsANonHuman ant soldier]] or chimera ant soldier [[IAmAHumanitarian food]]. [[spoiler: As the only shown explosion was a HeroicSacrifice of a RetiredBadass, it is not known if the shown destructive power is linked to the individual's power level]]
* ''{{Macross}}'' tends to feature a BFB within a MacrossMissileMassacre event toward the end of the series, and in the final episodes of subsequent series, when the gigantic battleship/robot reveals that significant portion of its mass consists entirely of "Reaction" missiles. The resulting explosion wipes a [[ConservationofNinjitsu fleet of millions from existence]].
* Buster Machine III, a.k.a. the Black Hole Bomb in ''{{Gunbuster}}''. Part of it's construction involved compressing the planet Jupiter into a shell roughly two-thirds the size of the Moon. [[spoiler:When detonated, it swallows the entire core of the Milky Way galaxy.]]
* Parodied by ''DGrayMan'' where Komui attempts to launch a classic bomb on one of the scientists who was walking around town with Komui's younger sister Lenalee to go shopping. Komui assumed that the poor guy was hitting on Lenalee, so he sets out to do all he can to kill him, which explains the bomb. Luckily, Lavi defuses that bomb, only to find that Komui had an extra mini bomb in hand, which he uses to blow half a store.
* In ''Anime/PuellaMagiMadokaMagica'', part of [[spoiler: Homura's plan to take down Walpurgisnacht]] involves using a gas truck to wham it(?) into a landmine-filled stadium. '''[[TheresNoKillLikeOverkill Literally]].'''
** And just so we're clear... that was ''part'' of the plan. [[HopeSpot It was a very explosive laden plan]]. [[spoiler:Unfortunately, it didn't work, but it was nice watching. Who knows ''[[RunningGag how many times]]'' she has done this on Walpurgisnacht.]]
** Other parts included a [[FieldOfBlades Field of ]]''[[FieldOfBlades Bazookas]]'', oil cistern and a pair of battleship-launced missiles.
* In ''Manga/RanmaOneHalf'', Mousse chains Ranma to a giant bomb bigger than himself, complete with digital timer. It was supposedly hidden in his robe. Rules of [[RuleOfCool Cool]], [[RuleOfFunny Funny]], and [[RuleOfDrama Drama]] were all arguably used.
[[/folder]]

[[folder:Board Games]]
* RoboRally has "The Big One", a bomb that's larger than the titular robots that carry it. Its explosion deals 64 damage at point-blank range, where the individual robots have 10 hit points at best.
[[/folder]]

[[folder:Comic Books]]
* [[TheDCU DC Comics]]' ''Cosmic Odyssey'' included some big bombs, like the splash-page bomb found by Green Lantern. [[spoiler: A ''yellow'' bomb.]]
* In ''TransformersGeneration2'', Grimlock comes up with a ploy to take out the flagship of Jhiaxus' Decepticons by sneaking a preposterously sized IncrediblyObviousBomb called the [[http://tfwiki.net/wiki/Chaosmaster_Bomb Chaosmaster Bomb]] onto the Decepticon ship. Given that this thing seems to be a nuke that is visibly bigger than Grimlock, who is himself one of the larger Autobots to begin with, it's probably safe to call this a ''very'' big bomb.
[[/folder]]

[[folder:Film]]
* The climax of ''{{Tremors}} II'', as in the quote. To elaborate, Earl has set Burt's entire cache of explosives to explode. Earl has previously referred to Burt as "[[NoKillLikeOverkill putting a new shine on the word 'overkill']]". Burt's only reaction and advice is to '''run'''.
** Eventually, Earl and the rest of the group run and hide behind a building pretty far away from the bomb. Burt runs right past them, shouting "Keep going, it's gonna be '''BIG!!''" He's right. When it goes off, the building they tried to hide behind is blown to kindling.
-->'''Kate:''' Is he serious?\\
'''Earl:''' Burt knows his bombs.
* The Tallboy (see below) which John Rambo uses to kill a significant chunk of the Myanmar army in ''{{Rambo}}''.
* In ''Film/{{Sunshine}}'', the goal is to jump-start the Sun by destroying or disrupting a [[AllInTheManual theoretical particle only barely understood by physics which has latched onto it and is slowing its fusion reaction, effectively causing it to fade and die]]. The means: an enormous f***ing bomb which required half of Earth's fissile resources to build. And it's one of ''two''.
* In ''Film/{{Avatar}}'', the bad guys attempt to blow up the Tree of Souls with a ''huge'' pallet of mining explosives. [[spoiler:When the shuttle loses an engine, [[HoistByHisOwnPetard it rolls back and crushes the marine who was preparing to push it out]]]].
* The Alpha-Omega bomb in ''[[PlanetOfTheApes Beneath The Planet Of The Apes]]''
* ''Film/PacificRim'' gives us [[http://static3.wikia.nocookie.net/__cb20130730110244/pacificrim/images/9/90/Art-striker-6.jpg this]]. A 2,400 thermonuclear explosive, attached to a [[HumongousMecha Jaeger's]] back, the detonation is equivilant to 1.2 ''million tons'' of TNT exploding, which results in a massive bubble of air being created underwater.
[[/folder]]

[[folder:Literature]]
* In Creator/StephenKing's ''UnderTheDome'', a relatively small chunk of C4 is used to [[spoiler: blow up a meth lab with enough propane to generate a column of flame over one mile high and start a devastating wildfire that burns through the forest like paper and is hot enough to melt asphalt]]. Bear in mind that this is set in the equivalent of a locked room full of people. [[AnyoneCanDie Predictability ensues]].
* HarryTurtledove's ''TheGunsOfTheSouth'' uses the concept of the Battle of the Crater (see Real Life below), but changes the situation so it's used by the Confederates against time-traveling Afrikaaners (ItMakesSenseInContext).
* Andy Remic's novel War Machine has one of the main charaters gaining an [[{{BFG}} RPN- Rocket Propelled Nuke]].
* MatthewReilly usually uses high yield explosives in his books, but occasionally uses these when a nuke would be impractical.
** In ''Scarecrow'', the US Marines call in an airstike to destroy a mine full of terrorists with a MOAB (see Real Life below).
** In ''The Six Sacred Stones'', Jack takes out a plane with a scaled up version of a Bouncing Betty, nicknamed "Super Betty". It's a large bomb that uses a secondary detonation to propel it into the air before it explodes.
* In Graham [=McNeil's=] ''TabletopGame/{{Warhammer 40000}}'' novel ''[[Literature/{{Ultramarines}} Warriors of Ultramar]]'', some orbital fuel refineries are rigged to blow and packed with extra explosives. The first one is tossed into the middle of a [[HordeOfAlienLocusts Tyranid]] hive fleet, and detonated when one of the hiveships tries to eat it. The second time the Imperium tries the same thing, but the 'nids [[HoistByHisOwnPetard toss it back at them]].
** A similar incident occurs in the second ''CiaphasCain'' book, where a refinery is detonated after flushing most of its product down a series of tunnels to deal with a [[RobotWar Necron]] [[ZombieApocalypse Apocalypse]]. The fumes left in the tunnels turn it into the universe's largest Fuel Air Explosive: A God-Emperor Of All Bombs, if you will. How big? It rocks the shuttles in high atmosphere, that's how.
* In the ''Literature/BelisariusSeries'', there's a point where the heroes set off an enormous explosion for earthmoving purposes. Aide had warned repeatedly that they were using more explosives than they really needed for the job (it would still have been a massive detonation, but it didn't have to be ''that'' massive), but "Belisarius and Basil had both insisted that more was vastly preferable than enough." After the rocks stop falling -- on ''them'':
-->'''Belisarius:''' Next time. Smaller charges.\\
'''Basil:''' Much smaller.\\
'''Baresmanas:''' Crazy f***ing Romans.\\
'''Kurush:''' Whoever put him in charge?
* In ''[[Literature/LegacyOfTheAldenata Gust Front]]'', the Fredericksburg Executive Building in Fredricksburg, Virginia is filled with propane for the purpose of turning it into a giant fuel-air explosive that, when detonated, completely levels the town, as part of a deception to keep the [[HordeOfAlienLocusts Posleen]] from locating the impromptu bomb shelter the townspeople are using to hide from the aliens.
* While not the size of a car, the terrorist bomb in ''Literature/TheSumOfAllFears'' in the RyanVerse is almost six times larger than a standard [[spoiler: nuclear]] bomb. The scientist who made it justified the size by explaining that he had no actual experience making such a bomb, only theory, and as a result deliberately over-engineered it to make sure that it works. [[spoiler: It doesn't, at least not as intended, because he was killed by the terrorists before he could explain the final, simple procedure that would've made it work much better.]]
* Used in combination with IncrediblyObviousBomb in StarWars ExpandedUniverse novel [[FateOfTheJedi Apocalypse]] as a distraction for [[spoiler: [[EldritchAbomination Abeloth]]]] who can see the future

[[/folder]]

[[folder:Live Action TV]]
* Various ''Series/{{Mythbusters}}' Mantras dictate there must be at least one explosion per episode. Most of the early Myths were small scale booms (I.E. an exploding cellphone, or blowing up a house using bug bombs). Then came the myth that cherry bombs could remove concrete after it solidified in a mixer truck. After escalating to dynamite and only chipping the surface of the mess (just the thinner layers got removed), the gang tried [[CrowningMomentOfAwesome several hundred pounds of ANFO]].
** Just to be absolutely clear, it ''[[ThereIsNoKillLikeOverkill vaporized]]'' the truck. Which they knew it would do - after all, if they had to track down an unused-for-the-day quarry for the blast, and shut down highways ''miles'' away, they darn well knew that that much explosive wouldn't just remove the concrete; they simply wanted to blow up the truck.
* ''Series/{{Knightmare}}'' featured a room which contained nothing but an exit and an enormous bomb. The fuse would start shortly after the dungeoneer entered the room from a door on the left hand side of the screen. The dungeoneer's advisors, who were used to being able to describe the dungeoneer's surroundings for them, had no time to do anything but get the dungeoneer to a door in the far wall of the room. The room soon became known simply as [[FanNickname the Bomb Room]], and it provided many an OhCrap moment.
* An ''Series/TheOuterLimits'' episode involves humans fighting a losing war against a race of LizardFolk. In order to win it, humans build a "sub-atomic bomb", which looks like an early atomic bomb but many times larger, capable of causing an EarthShatteringKaboom. Unfortunately one of the crew is TheMole, and the ship sent to drop the bomb gets disabled. [[spoiler:The last surviving crewmember ends up killing the mole, and drops the bomb...on Earth, because TheMole turned the ship round while everyone was knocked out]].
[[/folder]]

[[folder:Video Games]]
* Some of the Bob-ombs in the ''SuperMarioBros'' games could get this large, especially in ''VideoGame/SuperMarioRPG'' (pictured above) and the second ''VideoGame/PaperMario''.
** The aptly named 'Big Bob-omb' from SuperMario64 onwards too. He's already pretty big in his debut, but it's in MarioParty where he ends up being shown as absolutely massive. Don't let him explode in the mini games 'Defuse or Lose' or 'You're the Bob-omb', otherwise the player character ends up flying through the air and smashing into the ground hard enough to make a sizable crater...
* The Powder Keg in ''VideoGame/TheLegendOfZeldaMajorasMask''. It's a friggin' barrel of '''kerboom''' that's bigger than Link. To drive the point home, Link ''cannot carry this thing.'' He has to be in Goron form to move it.
** Ditto for its predecessor, the Super Bomb, in ''VideoGame/TheLegendOfZeldaALinkToThePast''. It's as big as Link. Amusingly enough, it doesn't harm anything else except the one specific wall you need to use it on: you can leave it in the middle of a group of enemies and stand next to it, and nobody takes any damage when it blows up.
** And then, of course, there's the Big Bombs from ''VideoGame/TheLegendOfZeldaFourSwordsAdventures'', which are roughly the size of ''the screen''...and if you're anywhere on screen when one of those things goes off, '''''[[OneHitKill YOU ARE DEAD]]'''''. Oh, and Dark Link has a nasty habit of hovering over the occasional mini-maze dropping these things at you ''repeatedly''.
** ''VideoGame/TheLegendOfZeldaPhantomHourglass'' has floating barrels of boom scattered all around the Great Sea. You don't see them as anything much- just another obstacle to be blasted out of the way. Until one day you stop right alongside one... and realize it's ''6 times as tall as Link''.
** The Groosenator in ''VideoGame/TheLegendOfZeldaSkywardSword'' is designed to launch giant-sized bombs to stun the Imprisoned, as well as [[spoiler:putting it down when it starts flying]].
* Bomb Man's super attack in ''MegaManPoweredUp'' is [[HammerSpace producing]] and throwing a bomb about five times his size.
* ''CommandAndConquer RedAlert3'': Supreme Time Bomb ready
** Also, [=MOABs=] and Fuel-Air Bombs in ''CommandAndConquer Generals''
* In ''VideoGame/WorldOfWarcraft'' Skybreaker, the Alliance airship that patrols Icecrown, is armed with a massive bomb (the Horde equivalent has [[{{BFG}} a massive cannon]] instead).
** The bomb is easily 2/3rds the length and breadth of the ship. The cannon is large enough that an engineer's one-person helicopter can fly into it without touching the sides. Unfortunately, you never get to see either of these weapons deployed...
** And then there's the dragon-sized Mana bomb that destroyed Theramore, it's implied that if [[spoiler: Rhonin]] didn't commit a HeroicSacrifice to stop the damage at the outside of the city walls, it may have turned the ''entire marsh'' into a smoking crater.
* The ninth ''MightAndMagic'' game had a fireworks salesman living in a village whose docks have become unuseable due to being completely frozen over. The local regent asks you to do something about the ice. Ensue the problem's logical solution.
* ''VideoGame/TeamFortress2'''s bomb cart on the [[EscortMission Payload Maps]], where it's the BLU team's responsibility to dump it into RED team's waste pit. RED Team, obviously, needs to prevent this.
** The Mann Vs Machine mode has the end of wave bosses, giant tanks that are also huge bombs.
* What was so terrible that the Precursors made the [[StarControl Sa-Matra]]? No one knows.
* The Covenant bombs in the ''{{Halo}}'' series are a little bigger than the military jeeps and are covered in SpikesOfVillainy. There's one in the main game trilogy, at the beginning of the second game where Master Chief has to defuse one that's on a space station he's currently in. He drags it into space, reactivates it, and throws it at a Covenant cruiser to give them a taste of their own medicine.
-->'''Master Chief''': Sir, permission to leave the station?
-->'''Lord Hood''': For what purpose, Master Chief?
-->'''Master Chief''': [[HoistByHisOwnPetard I'm going to give the Covenant back their bomb.]]
-->'''Lord Hood''': [[{{Beat}} ...]] Permission granted.
** There's another one in ''HaloLegends The Package''.
** The ExpandedUniverse novels also have the [[EarthShatteringKaboom planet-busting]] NOVA bombs.
* The Theronian Bomb in ''MetroidPrime 3: Corruption''. It's parts need to be collected and assembled manually, using Samus' gunship (and the individual parts are still a lot bigger than the ship) to be dropped on the Seed shield on Elysia. The explosion certainly is more than enough to break the shield.
* ''AceCombat Zero''-- the MPBM. A weapon only used by the CoolPlane, the ADFX-0# Morgan. While it's technically a missile, it's more like a VideoGame/StarFox Smart Bomb- and it's the size of said CoolPlane's Cockpit. The resultant Boom is the second largest blast in the game (the only larger is a [[NukeEm Nuke]]). (Note that the Real Life "Daisy Cutter" Fuel-Air Explosive Bomb (see Below) is also in this game, and it's blast is pretty big, but has nothing on the MPBM's almighty SphereOfDestruction.)`
** The SWBM from ''X: Skies of Deception'' makes the MPBM look like a pussy, since its PlanarShockwave can cover the entire map. Then again, it is an explicit superweapon. Its little brother the LSWM, which can be fighter-mounted - albeit on a superfighter - is still (slightly) bigger in blast coverage than the MPBM, though.
* ''VideoGame/{{Bomberman}}'' games technically do this, since the bombs are the same size as the bombermen.
** In ''Bomberman 64'' and ''The Second Attack!'', it's actually a gameplay mechanic for players to inflate held bombs to increase the blast radius!
*** Only in the intro sequence, but ''Saturn Bomberman'' takes special note for the titular protagonist dodging a bunch of truly gigantic bombs several times his size, then ''catching and flinging one of those bombs back to his assailants'', which overshoots and falls into a volcano. Cue OhCrap reactions over the next few seconds, then the camera cutting away to the planet bulging three times, then '''turning into a planet-sized CartoonBomb''' before [[EarthShatteringKaboom exploding.]]
* Done in the ''VideoGame/MonsterHunter'' series as well, with "Barrel Bombs" (i.e. very large gunpowder kegs). In ''Unite'', you can recruit an anthropomorphic cat buddy who, with the proper skill, can pull out one of these (it's about twice his size), run up to the enemy, and blow it up. (He gets better). Strap a False Felyne mask to your Shakalaka buddy in ''Tri'', and he can do it, too!
* The "extra strength" bomb in GearsOfWar 2, which takes two people to carry at a slow walking pace.
* ''{{Spore}}'' has the Planet Buster Space stage tool, which, as the name implies, busts a planet [[http://www.youtube.com/watch?v=e2BpW8TQWS4&feature=related epic mini cutscene]]. Could qualify as AwesomeButImpractical as it [[spoiler: makes all nearby empires HATE you.]]
* ''{{Conduit 2}}'' has a pulsing [[NazisWithGnarlyWeapons Nazi nuclear Doomsday Device]] in D.C. that Prometheus must [[InstantCooldown disable]] [[GoingCritical before it blows]].
* Peacock in ''VideoGame/{{Skullgirls}}'' can summon a massive cartoon bomb called the "Fat Man", which causes a huge explosion when it detonates and damages any character standing too close -- including Peacock herself.
* The MB Bomb from the ''VideoGame/{{Worms}}'' series.
* ''{{Freespace}}'' has the GTM N1 Harbinger Bomb, a huge space bomb with a [[NukeEm fusion warhead with three salted-fission warheads]]. Only the Ursa heavy bomber can carry it, plus it can carry two per missile bank and takes thirty seconds to reload. Ditto its counterpart in Freespace 2, the Helios Torpedo, which is a massive Antimatter bomb.
* The bomb used for [[EarthShatteringKaboom Exterminatus]] in ''[[DawnOfWar Dawn Of War II: Retribution]]'' (as seen in cutscene) is roughly a size of zeppelin.
* The Creative mode in ''{{VideoGame/Minecraft}}'' lets you make some truly terrifying piles of TNT. Big enough to crash the game when set off if you have the patience.
[[/folder]]


[[folder:Webcomic]]
* ''Webcomic/{{Housepets}}'' plays with this trope in "The Great Water Balloon War" story arc[[note]]full of parodies of various warfare tropes[[/note]] [[http://www.housepetscomic.com/2011/06/29/the-bigger-one/ here]].
[[/folder]]

[[folder:Western Animation]]
* ''Jimmy-Timmy Power Hour 2'', the second crossover between ''JimmyNeutron'' and ''TheFairlyOddparents'', reaches its climax when Professor Calamitous uses Jorgen's magic powers to create the "Big Bang Bomb," literally, an enormous bomb a thousand times bigger than your conventional explosives, set to destroy ''the whole universe'' when it goes off. Calamitous plans to shield himself from the blast under an equally large... table.
[[/folder]]

[[folder:Real Life]]
* The Tallboy (12,000 lb.) and [[http://en.wikipedia.org/wiki/File:Grand_slam_bomb.jpg Grand]] [[http://www.youtube.com/watch?v=R-Mm-zFW_nA Slam]] bombs (22,000 lb.) used by the Royal Air Force in WWII were streamlined single armour-piercing bombs dropped from great heights which would allow them to impact with supersonic speeds; they were intended to cause earthquake effects, collapsing coalmines, road and rail tunnels, viaducts and large concrete constructions such as U-Boat pens, the V2 rocket launching facilities and V3 millipede gun facilities in Northern France. They were developed by [[http://en.wikipedia.org/wiki/Barnes_Wallis Barnes Wallis]], who had also designed the skipping bombs used in the [[TheDamBusters Dam Buster]] raids. He figured that allowing a bomb to explode underground next to a hardened target like a bunker, instead of on top of it like bombs tended to do back then, would transmit much more of the bomb's explosive energy to the target, causing its foundations to collapse rather than simply making a hole in the reinforced roof, which could otherwise leave the contents below undamaged - having that roof fall on it was very much more dangerous. Being a glasses-wearing Grade A British Boffin, he was entirely right. Tallboys also sank the German battleship ''[[http://en.wikipedia.org/wiki/German_battleship_Tirpitz Tirpitz]]''. Variants on these weapons, with additional guidance, became the Azon and Tarzon bombs used in the Korean War to launch precision attacks on targets from USAF B-29s. The Tallboy design became the casing for the early UK nuclear weapons, under the euphemistic codename of "Target Marker Bomb". Later, during [[http://en.wikipedia.org/wiki/Operation_Desert_Storm Operation Desert Storm]], the US Air Force would develop the [[http://en.wikipedia.org/wiki/GBU-28 Guided Bomb Unit-28]] to help them penetrate reinforced Iraqi bunkers that normally couldn't be penetrated by their Paveway and BLU-109 bombs, with greatly successful results.
** Large, high-capacity bombs of 4,000lbs, 8,000lbs (two 4,000lb bombs bolted together) and eventually 12,000lbs (three 4,000lb bombs bolted together) were used by Lancaster bombers of the RAF's Bomber Command during WWII. Simple cylinders designed to explode in contact with a city's rooftops, these can be realistically called "blockbusters".
** In 1959, what was thought to be a dummy Grand Slam bomb, used as a gate marker at RAF Scampton airbase, turned out to be not a dud after all. "Exhaustive investigations then took place, but nobody could find the long-gone 1944, 1945 or 1946 records which might have shown how a live 22,000 lb bomb became a gate guard for nearly the next decade and a half. Some safety distance calculations were done, however, about the effect of a Grand Slam detonating at ground level in the open. Apart from the entire RAF Station, most of the northern part of the City of Lincoln, including Lincoln Cathedral, which dates back to 1250, would have been flattened."
** The Soviet take on the concept was the gargantuan FAB-9000, which is lighter than the Grand Slam at 9000kg (19000+ pounds). Initially it was thought that it would never be used in combat, since it was just too impractically ''big'', instead existing to test aircraft capacity. Then along came the UsefulNotes/IranIraqWar, and Iraqi used Tu-22 [[ReportingNames Blinders]] and FAB-9000s to good effect by toss-bombing them--in other words, by blazing in at supersonic speed, pitching upwards, and then releasing the bomb, which would then '' fly through the air like a 9000kg artillery shell''. A good pilot could place the bomb within a hundred-meter circle at ranges of several kilometers.
* At the end of UsefulNotes/WorldWarTwo, [[http://en.wikipedia.org/wiki/Fat_Man Fat Man]] and [[http://en.wikipedia.org/wiki/Little_Boy Little Boy]] qualified. Not only were their explosive yields orders of magnitude above anything that had ever been deployed previously, they filled the entire bomb bay of the B-29 Superfortresses that carried them.
* The [[MnogoNukes Tsar Bomba]], the largest nuclear device ever built in RealLife, was so big that even the largest bombers the Soviets had couldn't fly it without special modifications (they had to remove the bomb bay doors to fit it in and remove 2 fuel tanks to decrease the weight of the plane once it was loaded).
** To add to the awesomeness (not to mention [[AwesomeButImpractical impracticality]]), the 50 megaton detonation was ''a toned down version''. The original 100 MT design was so powerful, the plane wouldn't even be able to escape the blast. Repeat with me: ''50 MT is '''one quarter of a Krakatoa eruption!'''''
*** As an aside, his work on this bomb is what turned Andrei Sakharov to become a thorn in the Soviet side, as a peace activist.
* Along the same vein, [[http://en.wikipedia.org/wiki/Ivy_Mike Ivy Mike]], the U.S.'s first thermonuclear test detonation. Granted, the "Mike" device was not a bomb in the sense of "weapon of war," as it took up an ''entire building'' and weighed 62 tons.
* In conventional explosives, there's the 15,000 lb. BLU-82 bomb that US forces used to clear [=LZs=] during the UsefulNotes/VietnamWar and clearing minefields during the UsefulNotes/GulfWar, inaccurately called "Daisy cutters" from the fusing mechanism that allowed the bomb to detonate above the ground, to maximize the blast area.
** The modern take on this is the GBU-43 Massive Ordinance Air Blast, or [[FunWithAcronyms MOAB]]. A.k.a. the "[[FanNickname Mother of All Bombs]]". For comparison, a 2,000lb bomb, which is big enough that they're rarely used, creates a crater with a radius of about 15 meters. The MOAB has a crater radius of more than ''150'' meters. They are so massive, they can only be carried by cargo transports because the bombers were not designed with big enough bomb bays to carry the weapon.
*** Which, probably unsurprisingly, the Russians topped, with an even larger device nicknamed the Father of All Bombs.
* While computer simulations have taken the place of most nuclear tests, there's still the occasional need to set off a very large blast to test equipment and architecture in the real world. Such a test was the [[http://www.globalsecurity.org/wmd/ops/minor-scale.htm Minor Scale]] test at White Sands in 1985, where the Defence Nuclear Agency set off 4.7 kilotons of chemical explosive - equal to an 8 kiloton nuclear blast - to test blast shelters. Other, smaller versions, have been done since.
* Technically any nova or supernova, since they come from stars, which require a hell of a lot of mass to even become a star, whether or not they explode.
* The [[http://en.wikipedia.org/wiki/Battle_of_the_Crater Battle of the Crater]] from UsefulNotes/TheAmericanCivilWar, in which the Union used mines to plant 8,000 pounds of gunpowder beneath Confederate fortifications near Petersburg, Virginia. The resulting crater is still visible today, and is part of of Petersburg National Battlefield Park. The Battle of the Crater was depicted in ''Literature/ColdMountain''.
** Similarly, the Battle of Messines in UsefulNotes/WorldWarOne. The evening before the explosion, General Plumer remarked:
--->"Gentlemen, we may not make history tomorrow, but shall certainly change the geography."
** That's actually a basic tactic of siege warfare since introduction of explosives: you dug a tunnel under the enemy walls, planted gunpowder and made a part of the wall go boom before attacking. It was rarely successful because a competent defender could intercept the tunnels, but it could still be pulled off successfully as late as 1799, when Napoleon breached Acre's walls with it (the assault was repelled because the enemy continued to receive reinforcements and supplies from sea, but Napoleon still breached the fortress). The examples at Petersburg and Messines were just adapting that to the context of trench warfare.
*** And in one rather early such event, chemical warfare appears to have been deployed to knock out the defense. In 256AD, a Roman fortress was under siege, and the attackers were tunneling under the fortress wall to either make it collapse or to get the attackers into the fortress. The Roman defenders had caught on and were digging interception tunnels. At one such interception point the remains of some 20 Roman soldiers were found, but without any telltale skeletal damage to show they either died fighting, or by the tunnel collapsing. One historian surmises the attackers had set off a pitch-and-sulphur 'bomb', the sulphur dioxide suffocating the Roman soldiers in the tunnel
* Tragically, during UsefulNotes/WorldWarI a couple of ships, one filled with high explosives, collided causing what is known infamously as the [[http://www.damninteresting.com/the-halifax-disaster/ Halifax Disaster]]. It was considered a German plot at the time until the true circumstances surrounding it came to light. It lives on in Canadian memory, and while technically not a bomb, it was the single largest conventional manmade explosion until the A-Bombs gave rise to the nuclear age (it remains one of the largest non-nuclear explosions in history). The freighter in question, the ''Mont Blanc'', was loaded with high explosives and car fuel and was inbound to Halifax harbour in the morning; she and her crew were following the "rules of the road" at the time, but the Norwegian relief ship ''[[UnfortunateNames Imo]]'' was outbound on the ''wrong'' side of the Narrows while keeping clear of a tramp steamer and an ocean-going tug. Thanks to a fantastic screw-up in communications, the ''Mont Blanc'' tried to dodge to the middle of the Narrows while the ''Imo'' reversed engines; unfortunately, said reversal swung the bow of the ''Imo'' straight into the ''Mont Blanc'', generating some [[SarcasmMode handy]] sparks as the ships collided, parted, and drifted away from one another. Various ships and tugs tried to come to the aid of the burning ''Mont Blanc''; unfortunately, only her crew knew the true nature of her cargo and, unable to communicate the danger in English, they took the most sensible course of action: ''[[OhCrap they ran as fast as they could]]''. When the ''Mont Blanc'' blew, the resulting shockwave and [[GiantWallOfWateryDoom tsunami]] basically obliterated the northern half of Halifax along with some of the shoreline areas of Dartmouth (where the ''Imo'' was driven aground). The explosion was so powerful that the anchor and a cannon of the ''Mont Blanc'' were found 2 and 3.5 miles away respectively in opposite directions, and the blast was ''felt'' as far as '''360 kilometres away''' in Cape Breton. The south end of the city was only saved from serious damage because the shock waves rebounded off of Citadel Hill. As if the direct effects of the explosion [[FromBadToWorse weren't bad enough]], the subsequent [[KillItWithFire fires]] and [[KillItWithIce blizzard]] [[TraumaCongaLine certainly didn't help matters either]].
** Telegraph operator Vince Coleman's EmergencyBroadcast DyingMomentOfAwesome remains Canada's iconic HeroicSacrifice. "Stop trains. Munitions ship on fire making for Pier 6. [[FaceDeathWithDignity Goodbye boys.]]"
** It is still possible to go to Halifax and see what the blast wave destroyed and what it didn't. After a certain point, the really old buildings just ''stop'', replaced by newer architecture.
** Similar to the Halifax explosion is the [[http://en.wikipedia.org/wiki/Texas_City_Disaster Texas City Disaster]], the largest industrial accident in US history, when two transport ships carrying two and a half thousand tons of ammonium nitrate (commonly used for two purposes: agricultural fertilizer and high explosives) caught fire and exploded in the harbor. In addition to killing at least 567 people (generally believed to be an underestimate because the ferocity of the explosion meant that there simply ''weren't any remains'' of some of the victims), the force of the explosion shattered windows in the city of Houston, 40 miles away, and the shock wave could still be felt a hundred miles away in Louisiana. It is considered the birth of modern disaster preparedness planning in the US.
* From the other end of Canada, we have the [[http://en.wikipedia.org/wiki/Ripple_Rock Ripple Rock explosion]]. According to one urban legend, chunks of the rock were found in ''Australia''. While that's probably not true, shifting well over half a million metric tonnes of rock and water (and blowing a lot of it 300 meters into the air) is impressive in and of itself.
* The Soviet built the Raduga Kh-22 antiship missile which was HUGE for its purpose - nearly 40 feet long (as big as some small aircraft). It could even take a nuclear payload, making it more like a cruise missile (then again, its primary targets were the US Supercarriers, but nowadays much smaller modern [=AShMs=], like the Exocet and Harpoon which are a fraction of the size, could do the job nicely). Its size meant only the largest bombers like the Tu-95 [[ReportingNames "Be]][[BearsAreBadNews ar"]] could deploy them.
* [[http://www.youtube.com/watch?v=y8RY_ibNq3c The PEPCON]] [[http://en.wikipedia.org/wiki/PEPCON_disaster plant explosion]]: a rocket fuel factory that manufactured ammonium perchlorate (the oxidizer in solid rocket fuel) caught fire and BLEW UP; the biggest of the explosions registered 3.0 and 3.5 on the Richter scale and destroyed a significant portion of nearby Henderson, Nevada, shattering windows as far away as 10 miles.
* During the Peninsular War, the Anglo-Portugese fortifications of Almeida were destroyed in an enormous explosion, one of the most powerful of the pre-TNT age, when a French artillery shell penetrated the British magazine in the basement of the cathedral. The blast was visible from the British headquarters 50 miles away, and charred pieces of the city were carried all over Portugal. In Bernard Cornwell's ''{{Sharpe}}'' series, the title character set it off.
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