The War of the Worlds
The aliens are really super-modified humans from the future.They found some of The Time Traveler's work (or independently discovered the secret), and when future-Earth's resources started becoming depleted, they realized that a relatively easy solution would be to colonize a past version of their own planet. (Cavorite doesn't help with crossing interstellar distances.) Pretty standard twist, but it helps explain why Earth diseases killed them.
The Martians were afraid of us and acted out of paranoia.Human technology pales in comparison to Martian tripods, but our computer processing power doubles every eighteen months and soon will double every other month. They saw we were advancing very fast and, in a panic, built war machines to wipe us out. It would explain their Cool, but Inefficient way of wiping us out (using dozens of huge machines instead of, say, some sort of nuke) and their fascination with a bicycle wheel in Spielberg's 2005 version. They skipped the wheel in their history of technological advancement, which is why all their machines walk on legs and move so organically.
Whatever powered the Tripod's forcefields had to be constantly kept in check.Perhaps it was powered manually or by the aliens brain power, which is why the shields began to fail after the aliens got sick? The aliens may have had to crank operate the force fields, or fuel it with some kind of substance, or even willed the force fields to exist themselves.
The Martains are the precursors to the Anti-SpiralsA continuation of the theory above: it was the rapid growth of humanity that caused them to fear other spiral races (such as humans) in the first place.
The Martians weren't fighting us; they were running tests on our planet.Just look what we're doing on Mars: running local substances through combustion chambers to determine chemical makeup. Picking up interesting rocks. Landing on things with no regard to what might have just been flattened. Sound familiar? The "Martians" weren't even the real local species: they were artificial constructs created to test if there was anything fatal to the real Martians. (There was. They'll send another wave once they figure out how to stop the disease.) They sent Terran Land Rovers.
The martians were the "zeroth" angels.Just messing with ya. If you want to make a "serious" Evangelion theory, I'd love to hear it.
The angels attacked because they thought Lilithwas the amazing technology that killed off the martians without leaving a mark or giving them time to escape. The different angels wanted to either kill the humans to prevent another genocide, stop the humans from being killed, or take the weapon for themselves. The Martians were not really killed by a human disease, but rather the species-wide AT Field that separates all humans interfering with the martians' weak fields and turning them into, not Tang, but Jell-o. If another species with separate AT fields, but stronger than ours visited Earth, we'd be the dead ones.
The Tripods were EVA unitsThis may only work for the remakes, but I'll go with it. The only visible difference between the aliens and their Tripods is one of height. However, something about the way the tripods move is just too organic (and some parts of them look downright fleshy). The shields that turn up in every remake are not force fields, but AT Fields. The AT Fields falter because the Tripods themselves are sick. Hence why, at the end, they weren't able to do much but fart at people, and why Tom Cruise was able to kill one-he was already inside the field and could damage the core. Even more evidence-when the soldiers opened the hatch that lead to what was probably the cockpit, a shit-ton of orange fluid spilled out, followed by the dying pilot. What other mech works this way?
The future Earth of WOTW is Code GeassAfter the end of the original novel it was most likely that decades after the failed invasion of Earth the Martian species did become extinct. Also the end of the Novel also details how humans were deeply researching the martians highly advanced tech and physiology so it could be assumed that at some point Great Britain began to secretly reverse engineer the Martian tech to create their own Humongous Mecha. And since Britain was still in their Full swing imperialistic Bastards period they most likely forgot that they weren't the most powerful nation on earth (or in the universe) anymore and used this reengineered tech (ie, Steampunk prototype Nightmare Frames) to start colonizing other lesser advanced countries en masse. At some point afterward the Royal House of Windsor was overthrown in a military coup led and or funded by a family of nobles calling themselves Britannia. After that, things go downhill for the rest of the world: more countries are annexed by Great Britain and are included in their now vastly growing "Britannian Empire" and probably around sometime in the mid 20th Century since they had taken over so much new property Britain began to designate various countries/land sectors as numerical "Areas" to easily keep track of all they owned. However this led to extreme forms of racism and discrimination by the British public now referring to the native population as their countries respective numerical designations not by the nation they originally came from. Japan was Probably taken over and Annexed at some point in either the 1960s or 1970s and designated as Area 11. As for Geass itself it might be a form of reverse engineered Martian genetics as Wells himself wrote that the Martians probably did use some from of telepathy to communicate with each other. If anyone else has anymore theories on this please feel free to add...
The Martians were genetically engineered lifeforms.Their physiology is extremely efficient & deliberate, which is not generally something that happens with natural selection. This may also be the reason they died out. Because each of them was optimized to the same standards it resulted in a lack of genetic diversity, making them more vulnerable to disease. Once something figured out how to infect one, it could kill every single one of them.
The Martians not only genetically altered, but are actually artificial lives who Turned Against Their Masters.A brief mention is made of another race of vaguely humanoid Martians that the invaders used for food before they started sucking human blood. These are actually the things that created them. The invaders were created as a race of biological computers who tired of their servile role & took over, but the resulting war of independence rendered Mars uninhabitable. Their cruelty to humans is partly because they remind them of their former masters, both in appearance & the way they treat their own "lesser" races.
The Martians of War of the Worlds are the same as the aliens in Metal SlugAfter losing an attempted invasion which resulted in high Martian casualties the remaining Martians stayed on Mars and began to repopulate. After around 100 years they noticed that the world was already involved in a giant war and so decided to invade on an unexpected, unprepared and already damaged world.
The 1938 broadcast was real.Orson Welles was trying to root out the real aliens, but they got to him and forced him to change his story. Tom Cruise is there.
The Martians had a colonialist society, or at least one with little equality, back home, too.Those skinny, vaguely humanoid things they brought with them as rations are actually the species they were bioengineered from, though perhaps a different ethnic group. Only the rich had the money to improve themselves with biotechnology, and once they had "evolved" themselves into a totally different species, they no longer felt there was any reason to treat "lesser" peoples as anything other than resources to be used and discarded.
The Heat Rays in the Spielberg movie were actually energy-leaching beamsAs mentioned in the article for The Film Version, the rays vaporized the people, but left their clothes intact, floating around in a really ridiculous way. This troper believes that those beams were really some sort of beam that sucked out all of the energy or water-content (dehydrating the victims) of the victims and transferred it into the machine to power it. Of course, this theory becomes problematic upon viewing said rays explode military vehicles, but I'm going to blame that on Rule of Cool until either I or another troper can expand on this.
The aliens do understand microbiologyThey just thought they had it beat, it was just a matter of one or several very specific Earthborn viruses or bacteria that ended up bringing them down. They'd already prepared for or deemed themselves safe from billions of other kids.
The ships themselves were implanted during the lightning attackRather than being buried there for millennia to be piloted by lightning-riding invading aliens whose technology would've likely advanced far beyond them, the tripods themselves were what the lightning implanted in the ground.
Spielberg movie: The reason why the Japanese defeated some of the Tripods, is because they used Giant Mecha against them.In the Steven Spielberg movie the story goes around the Japanese took some tripods down. Since Japan is partially known for its large amount of giant mecha its possible they finally deployed them for real, instead of just using them as props for television shows.
Godzilla took down the Tripods in Japan.C'mon. Do you think he's going to let some one else trample Tokyo. I don't think so.
The Martians accidentally took bacteria back to Mars.The entire planet was soon engulfed with a terminal case of just about everything. Only the Martian children survived, still being young enough to adapt and regrow an immune system. Most of the Martian's knowledge and history was lost, but the machines - merely being extensions of the Martian brain - were still useable. When the children grew up, they realized that society would stagnate if they didn't learn more. They turned to Earth again, knowing that the attempt to conquer it was what nearly killed their entire race. Instead, they sought to learn from us and hopefully coexist in peace. For the past couple of decades, they've been sending scouting parties armed with nothing more than a book of general knowledge, and they're quite friendly (if a bit shy.)
Humanity has been one long Martian scientific experiment.Especially in the Spielberg film, where the tripods are planted on Earth in advance of the attack. The Martians seeded mankind on Earth thousands of years ago to observe the rise of a civilization; now they're satisfied and the experiment is finished. Time to sterilize the equipment and put the planet back to the way it was when they started. The tripods aren't soldiers, they're exterminators.
The ending of the 2005 film was All Just a Dream.The movie ends with the fall of the tripod. It would explain the totally unlikely survival of Robbie Ferrier.
Humans have a much hardier immune system.That's why the humans aren't' dying of any martian plagues.
War of the Worlds is a prequel to The Road.The aliens died, but had screwed up the environment so much it was irreparable. The man, his wife and son of The Road spent so much time hiding they never got word of the aliens. The swath of land they walk through just happened to be untouched by tripods.
Viruses/Bacteria didn't kill the Martians.Bizarre Alien Biology being what it is, terrestrial bugs aren't likely to be very dangerous. Shooting up human blood, however...
In the film, Robbie wants to go and fight the aliens because he's lost the will to live.Earth has been invaded by invincible aliens who will either burn you to ash or gather you up for unknown reasons. Even if you survive, the best you can hope for is to hide in a basement for the rest of your life, however short that may be. Robbie joined the battle because -consciously or subconsciously- he understands that the world is ending, and that it's all downhill from here.