- Accidental Innuendo: Look at the Skeleton Bra.◊
- Alternate Character Interpretation: House Cannith: The worlds best war profiteers or a bunch of raving lunatic scientists doing what they do to just to push SCIENCE forward. (Since Cannith is split into three rival factions, it's quite possible for them to be both and more.)
- The setting was designed to be ambiguous in regards to major events as well as factions and people, so that DMs could choose their own interpretation.
- Broken Base: Many "traditionalist" Dungeons & Dragons players found the setting too radically different from the earlier Medieval Fantasy/High Fantasy settings like Greyhawk, Dragonlance and Forgotten Realms. Ironically, the main complaint was that the setting was just too different from the already existing ones, which was kind of the point of launching a new campaign setting in the first place.
- Complete Monster: "The Chimes of Midnight", "Quoth the Raven", "Hell's Heart": Genius Inquisitive Viktor/Victor Saint-Demain has his massive ego bruised by Baron D'Medani and plots a gruesome revenge, recruiting serial killers to commit murder all over Sharn with intention of wiping out the Baron, his House and to drop D'Medani's beloved daughter Zelina to her death. Foiled and placed in a sanitarium, Viktor manipulates a troubled man into becoming a serial killer who kidnaps and tortures his victims to death, with the intent of sending the heroes to die against him after creating a large body count. Locked away in the asylum of Hell's Heart, Viktor uses his manipulative brilliance to take over, allowing the insane doctor in charge to torture other inmates, before recruiting more serial killers. Having the D'Medanis captured, Viktor tries to have them killed, intending on framing the heroes for poisoning Sharn's water supply to kill thousands upon thousands of innocents, releasing his killers on the population and "clearing" his name to take advantage of the horrible chaos.
- Ensemble Dark Horse: The Warforged.
- Fandom Rivalry: Eberron fans and Forgotten Realms fans.
- Fan Nickname: Razorclaws are often called ThunderCats.
- Fanon Discontinuity: While many of the changes for 4e stuck nicely, introducing Tieflings, Dragonborn, and Eladrin into Eberron, fans generally agree that there is not now nor has there ever been a 14th Plane called Baator! As Wayfinders Guide didn't mention it, this may be headed towards Canon Discontinuity.
- Ho Yay: Yaoi Genre fans might enjoy the fact that the kalashtar are described as having a strong preference for the company of members of the same quori lineage, and do not commonly form long-term relationships or marriages with members of other lineages. Since each lineage consists of only one gender...
- Magnificent Bastard: With so many Chessmasters, there's more than a few of these out there.
- Memetic Molester: Cardinal Krozen
- Memetic Mutation: Rood the Doorforged, Warforged Pimps...
- Moe: Jaela Daran in fan-art.
- Moral Event Horizon: Happened a lot during the Last War.
- Older Than They Think: There's plenty of new material in Eberron, but some ideas like Elemental Airships were already used in Mystara. Jakandor could also be seen as a proto-Eberron, with two morally grey factions that the Party could be members of, rather than the dozens of organizations, houses, nations, and religions vying for control of Khorvaire.
- Vindicated by History: While Forgotten Realms remains the most popular D&D Setting (thanks to Wizard's contract with Ed Greenwood requiring at least one new Forgtten Realms book each year), Ravenloft is really the only other contender for the #2 slot. Beyond that, Keith Baker indicated that adapting Eberron to 5e was extremely easy because in the past decade D&D as a whole has drifted strongly toward the Dungeon Punk feel of Eberron, and now assumes Settings in which magic has mundane utility as the default, something for which Eberron was heavily criticized for upon it's initial release.
YMMV / Eberron