History TabletopGame / AdvancedDungeonsAndDragons1stEdition

** Librams, such as the "Libram of Gainful Conjuration" is a reference to Jack Vance's ''Literature/TheEyesOfTheOverworld''.

* ShoutOut: The Monster Manual entry for the [[RodentsOfUnusualSize Rat, Giant]] adds (Sumatran) to the name. A case involving a Sumatran Giant Rat is one of many NoodleIncidents mentioned by Literature/SherlockHolmes.

** One of the more famous departures is the then-new dedicated combat system (discarding the need to own ''Chainmail'', which ''D&D'' had eclipsed in popularity even by this point), in which players determine what number they have to roll above by taking their character's [=THAC0=] (To-Hit Armor Class Zero) score and subtracting their target's Armor Class. Thus, the lower your [=THAC0=] and Armor Class, the better. This also introduced many players, younger ''and'' older, to the concept of subtracting negative numbers.

* ArtificialGravity: The starship's technology in the 1st Edition module S3 ''Expedition to the Barrier Peaks''.

* FlyingWeapon: Multiple examples, starting with the Sword of Dancing in 1st Edition.

* HillbillyHorrors: Module N1 ''Against the Cult of the Reptile God'' is set in Orlane which is a heavily isolated and rural village plagued by mysterious problems and disappearances.

TabletopGame/{{Original|DungeonsAndDragons}} | TabletopGame/{{Basic|DungeonsAndDragons}} | '''AD&D1E''' | [[TabletopGame/AdvancedDungeonsAndDragons2ndEdition AD&D2E]] | [[TabletopGame/DungeonsAndDragonsThirdEdition 3E]] | [[TabletopGame/DungeonsAndDragonsFourthEdition 4E]] | [[TabletopGame/DungeonsAndDragonsFifthEdition 5E]]-]]]]]

TabletopGame/{{Original|DungeonsAndDragons}} | TabletopGame/{{Basic|DungeonsAndDragons}} | '''1E''' | [[TabletopGame/AdvancedDungeonsAndDragons2ndEdition 2E]] | [[TabletopGame/DungeonsAndDragonsThirdEdition 3E]] | [[TabletopGame/DungeonsAndDragonsFourthEdition 4E]] | [[TabletopGame/DungeonsAndDragonsFifthEdition 5E]]-]]]]]

** Racial stat caps remained in place from ''[=OD&D=]''. Likewise, racial class access was a thing, and in a lot of cases was fairly stringent (for example, in the rules-as-written, only humans and half-humans could be ''clerics'', with no elf, dwarf or halfling clerics to be found).[[note]]This, in addition to [[TabletopGame/BasicDungeonsAndDragons Basic]] treating elves and dwarves as their own ''classes'', is what led to some of the "samey" feeling of elves and dwarves in media inspired by ''D&D'' in the [=80s=], such as ''Literature/RecordOfLodossWar''; going by the world as presented, no, you ''don't'' have dwarven wizards or elf priests.[[/note]] Individual settings could and did modify these restrictions, but in the base rulebooks they were fairly tight.

''Advanced Dungeons & Dragons (1st Edition)'' (1977-1985), often called '''[=AD&D1E=]''', is the more complete rules of ''TabletopGame/DungeonsAndDragons'' meant to compliment ''TabletopGame/BasicDungeonsAndDragons'', including more character classes, and the enshrinement of the classic ''Dungeons & Dragons'' alignment system. It is more or less completely compatible with ''Basic Dungeons & Dragons'', and during its heyday many gamers mixed and matched at will. As well, CharacterClassSystem was unified but some classes are human-only, others forbidden to certain races.[[note]]This is actually the rules from the original set, but the restrictions were a bit looser. Most people didn't understand the distinction early, which is why Moldvay just said "to heck with it" and made race-as-class the standard for the basic game; the B/X rules were actually mechanically identical, just presented differently.[[/note]]

* DeadlyDustStorm: Modules I3-I5 (Desert of Desolation series). One possible random encounter while in the desert is a dust storm. There's an 80% chance of the {{PC}}s getting lost unless they immediately halt, and movement rate is cut in half if they continue. The storm lasts 3-22 turns (30 minutes to 3 hours 40 minutes).

* MassResurrection: If the deity St. Cuthbert is summoned in ''TabletopGame/TempleOfElementalEvil'', he will Raise all slain {{PC}}s from the dead with a gesture.

* MistakenForQuake: The module series "Desert of Desolation". While in the desert the {{PC}}s can experience an earthquake as a random encounter. In fact, it's caused by the passage of a large number of SandWorm type creatures called "thunderherders".

* SelfGuardingPhlebotinum: In Adventure [=C2=], ''The Ghost Tower of Inverness'', the Soul Gem is surrounded by an invisible force sphere which must be broken by the {{PC}}s if they want to retrieve it.

** Module [=WG7=] ''Castle Greyhawk'', Level 4 "There's No Place Like Up". If the {{PC}}s climb up a magical rope, they can walk on solid clouds floating high in the air.

* WeirdWeather: Module I12 ''Egg of the Phoenix''. While the {{PC}}s are traveling from the Crypts of Empyrea back to Nimbortan, they will encounter a brief bizarre storm. It starts with a gale force wind, continues with rain that is almost boiling hot, then changes to razor-sharp sleet that slices exposed flesh and clothing to ribbons. Not to mention HostileWeather while they take the egg back.

** One of the more famous departures is the then-new dedicated combat system (discarding the need to own ''Chainmail'', which ''D&D'' had eclipsed in popularity even by this point), in which players determine what number they have to roll above by taking their character's THAC0 (To-Hit Armor Class Zero) score and subtracting their target's Armor Class. Thus, the lower your THAC0 and Armor Class, the better. This also introduced many players, younger ''and'' older, to the concept of subtracting negative numbers.

** Racial stat caps remained in place from ''[=OD&D=]''. Likewise, racial class access was a thing, and in a lot of cases was fairly stringent (for example, in the rules-as-written, only humans and half-humans could be ''clerics'', with no elf, dwarf or halfling clerics to be found). Individual settings could and did modify these restrictions, but in the base rulebooks they were fairly tight.

%% Please add more examples if you think of them!

** In general, much like in ''[=OD&D=]'' each member of the party is expected to make use of a fair few hirelings and henchmen, in order to give some extra heft and muscle to the party and overcome obstacles. This is the primary use of Charisma outside of the social adjustment, in fact, as "Charisma casting" is still not ''really'' a thing (outside of psionics, sort of). 17 or 18 charisma allow you to have several additional ''parties'' following you around, assuming you can pay them all (and they'll be absurdly loyal in any event).
** Relatedly, the ''big'' benefit Fighters get at higher levels is straight-up ''lordship''; at level 9, the rules explicitly allow a character to establish a "freehold", attract people to it, and have "a body of men-at-arms led by an above-average fighter", meaning you generally don't even need to go looking for henchmen, they'll come to you. The general idea appears to have been that Fighters would make up for a lack of spellcasting with [[WeHaveReserves a small army of dudes to make additional attacks against things and establish a full-on battle line]], and made Charisma ''not'' a DumpStat for Fighters, because Charisma of 14 or above could allow you to double, triple or ''more'' the size of the force on the players' side. In practice, this tended to be a complete nightmare to try and run, especially for very high-Charisma Fighters (who could field upward of ''fifteen dudes'') so even at the time a lot of players would leave this option fallow and under-developed.

** Relatedly, the ''big'' benefit Fighters get at higher levels is straight-up ''lordship''; at level 9, the rules explicitly allow a character to establish a "freehold", attract people to it, and have "a body of men-at-arms led by an above-average fighter", meaning you generally don't even need to go looking for henchmen. The general idea appears to have been that Fighters would make up for a lack of spellcasting with [[WeHaveReserves a small army of dudes to make additional attacks against things and establish a full-on battle line]]. In practice, this tended to be a complete nightmare to try and run, so even at the time a lot of players would leave this option fallow and under-developed.