The ''Dark Matter'' setting also called ''Dark•Matter''[[note]]Following the pattern set by the [[TabletopGame/StarDrive Star*Drive]] setting using punctuation in the middle of its title.[[/note]] was first published in 1999 for TSR's ''TabletopGame/{{Alternity}}'' RPG (itself an adaptation of 2nd edition ''[[TabletopGame/DungeonsAndDragons D&D]]'' rules to non-fantasy settings) then recycled for it's ''TabletopGame/D20Modern'' RPG. This is a world where [[ConspiracyKitchenSink every]] lunatic [[ConspiracyTheorist conspiracy theory]] is true. There really are [[TelepathicSpacemen psychic]] [[TheGreys grey aliens]] [[AlienAbduction abducting humans]] and [[AliensStealCattle mutilating cattle]]. [[TheIlluminati Illuminati type groups]] really are working to bring the entire world under their control. [[BigfootSasquatchAndYeti Bigfoot]]? He's out there too. And TheGovernment is [[GovernmentConspiracy covering it all up]]. The players are field agents for the shadowy private organization known as the Hoffman Institute, devoted to investigating the activities of psychics, cultists, and "xenoforms" and protecting humankind from the tide of dark matter seeping into the fabric of the universe that's the ultimate cause of all things paranormal.

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!!Dark•Matter Provides Examples Of:
* ApocalypseCult: The RealLife Aum Shinri Kyo gets a write up.
* {{Area 51}} is home to variety of research projects like the [[http://en.wikipedia.org/wiki/Aurora_%28aircraft%29 Aurora]] and reverse engineering alien ships including the ship from [[RoswellThatEndsWell Roswell]].
* BenevolentConspiracy: Hoffman Institute.
* BigfootSasquatchAndYeti: Sasquatch are a ServantRace created by the greys from DNA from neanderthals or [[http://en.wikipedia.org/wiki/Gigantopithecus Gigantopithecus]] or some alien species. They have ChameleonCamouflage which explains how they are so hard to catch on camera.
** The Yetis are are a variant of Sasquatch found in the Himalayas.
* BrainUploading: The first Internet Ghost was created when someone was experimenting with a neural array meant to replicate human thought processes. The processes is duplicates the conscious rather then changing it to digital form. The game leaves it open to if other internet ghosts are duplicating the original experiment or duplicating themselves.
* ConspiracyKitchenSink: The game even gives different options of exactly what the different conspiracies are really up to.
* GaiasVengeance: The Litterman is a creature made from a amalgam of garbage, slaying humans who despoil the planet. Capable of disassembling and resembling itself around garbage, Littermen have killed people in situations that mystify the authorities, who believe that the slayings are the work of human {{Serial Killer}}s.
* TheGreys: Yes. One disguised as a human called Dr. Itohiro Nakami founded the Hoffman Institute.
* HandOfGlory: With the added twist that what a hand of glory does depends on what the original owner did, such as a thief's makes people fall asleep, while a magician's hand makes the user smarter and more skilled at magic.
* HollywoodSatanism: The Final Church, THE worldwide conspiracy for demons and satanists. Basically, pretend that every paranoid rumor regarding Satanism was actually true and you get the gist. There was even a web book devoted solely to the group at the end of the game's run and the group makes a comeback in the ''[[TabletopGame/D20Modern Menace Manual]]''.
* {{Humanshifting}}: Sandman have a limited ability to change their appearance. There are also the dopplegangers from the Xenoform supplement who are of unknown origin even to themselves.
* TheIlluminati: The original Bavarian Illuminati is referenced but the Illuminati term is used as a blanket term for the many groups that know what's going on and have their own conspiracies including the Freemasons, CIA, the Bilderbergers, etc.
* KillAndReplace: Dopplegangers do this when deciding to imitate someone long term, usually to enjoy the wealth and perks that living that life may bring.
* TheKnightsHospitallers: The Knights of Malta are one of the more noteworthy conspiracies in the setting.
* LuckyCharmsTitle: Following the pattern set by the [[TabletopGame/StarDrive Star*Drive]] setting using punctuation in the middle of its title.
* TheMagicComesBack: The level of supernatural activity on Earth is directly linked to the amount of dark matter in the universe, which is likened to a tide pool. The rising tide of dark matter, however, is not a good thing: not only are many supernatural beings extremely dangerous, but previous risings of the tide have resulted in mass extinction events, as noted in the [[MayanDoomsday Mayan calendar]].
* MechanicalLifeforms: The Etoile are writhing mass of wires made of dark matter and exotic metals bearing a faint resemblance to metallic jellyfish.
* TheMenInBlack: Three explanations are provided including government agents, aliens disguised as humans (and doing a bad job of playing the part), or strange entities that are are attracted to paranormal events and the attempts to cover up events are actually a form of ReversePsychology to get people to talk about these events. Oh any of these could be true, even multiple types at the same time.
* MultipleChoicePast: Most of the creatures are given vague or multiple origins to leave open story options.
* MyGrandsonMyself: Nakami pretends to be his own son to transfer the leadership position of Hoffman Institute without becoming suspicious, being a Grey who uses illusions to appear as a human.
* NoBodyLeftBehind: Upon death, the nanites within a Sandman disassemble the body into dust.
* NoWaterProofingInTheFuture: Despite being an advance fusion of machine and biological material (which would contain water) the Sandman are damaged when immersed in conductive liquids.
* OurAngelsAreDifferent: The Elohim are speculated to be a race that lived on Earth before they [[AscendToAHigherPlaneOfExistence transcended to another dimension]]. They appear as tall, perfect humans but this seems AFormYouAreComfortableWith. Other more Biblical types have been seen, such as a fiery flying wheel or a pillar of fire, but these still may not be their true forms. They have a bit of a AGodAmI complex around other races and they [[SufficientlyAdvancedAlien have the tech to back their attitude up]]. When they speak, every [[TranslatorMicrobes listener understands regardless of what languages they understand]], which is rather impressive to the Greys. They also hate the luciferians and arcane magic users with a passion.
* OurGhoulsAreCreepier: After a few generations, humans who engage in cannibalism degenerate into Ghouls. Ghouls have unnaturally sharp fingernails and stink of blood and decay, forced to small pockets on the edge of society and slaking their hunger from morgues or the occasional isolated person.
* OurVampiresAreDifferent: Ekimmu are {{puppeteer parasite}}s that control the body through changing its host's body chemistry and genetics until the Ekimmu feels the host weakening, then it [[BodySurf transfers to a new host]]. The host undergoes a number of changes pale skin, bloodshot eyes, receding gumline, fingers becoming clawlike, baldness (they often wear a wig to hide this), [[FrozenFashionSense antique speaking patterns, wearing old fashion clothes]], and of course a hunger for blood and flesh (though hosts that have listened to vampire legends restrict their diet to blood). Some of the hosts have higher body density that causes them to [[SuperDrowningSkills sink like stones]] (explaining the whole CannotCrossRunningWater thing).
* RightWingMilitiaFanatic: The Knights of Unity draw their membership from racist groups like the Aryan Nations, the [[TheKlan KKK]], and the Posse Comitatus.
* RupertMurdoch: News Corp merits a mention in the Australia section as an organization that the Hoffman Institute has to watch to stop them exposing extraterrestrials.
* ShoutOut: The neural array that created the first [[BrainUploading Internet Ghost]] was dubbed in-universe as [[Film/TwoThousandOneASpaceOdyssey Hal]] by a sardonic researcher.
* StrawFeminist: In the CDC, there's a group called the Gynarchy (the name really says it all). But if you're interested what the Gynarchy is actually doing, they are looking to eliminate the need for sperm in the whole reproductive process because they think men are obsolete and once men are out of the equation, women can TakeOverTheWorld.
* TheTunguskaEvent: Tunguska was the location of a Grey settlement until it came close to being found. The Greys evacuated and then redirected a comet to destroy any remaining evidence, but used a comet with the wrong composition, which didn't destroy as much as they would have liked.
* UnitedNationsIsASuperPower: True to ConspiracyTheory lore the United Nations is working to create a OneWorldOrder with a secret army flying around in {{Black Helicopter}}s. It also started to secretly settle ''the moon''. Untrue to conspiracy theory lore, some of the descriptions paint them as [[WellIntentionedExtremist Well Intentioned Extremists]] with good reasons ''why'' they want a OneWorldOrder and a rather sympathetic vision of what kind of a state it would be.
* UnwillingRoboticisation: The Etoile transform humans into what are called "Sandmen," fusing organic and metallic material via {{nanite}}s. They use the sandmen to infiltrate the industrial centers of Earth and fight their enemies.
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