Dungeons & Dragons is the Trope Namer for:
- Critical Failure/Hit (Originally a common house rule and a feature of many competing games; eventually made its way into D&D proper)
- Always Chaotic Evil
- Always Lawful Good
- Bag of Holding
- Cat Folk
- Character Alignment (and all its subtropes)
- Charm Person
- Demi Human
- Demon Lords And Arch Devils
- Detect Evil
- Draconic Humanoid: After the humanoid (draconic) creature type in 4E, which was humanoid (dragonblood) in previous editions.
- The Face
- Failed a Spot Check (by way of The Order of the Stick, which is based on D&D)
- Good Is Not Nice
- No Saving Throw
- Orcus on His Throne
- Prestige Class
- Talking Is a Free Action
- Turn Undead
- The Worm That Walks
Dungeons & Dragons is the partial Trope Namer for:
- Author's Saving Throw
- Celestial Paragons and Archangels, the first part.
- Magic Missile Storm, in conjunction with Neverwinter Nights' homebrew spells Isaac's lesser missile storm and Isaac's greater missile storm
- Revive Kills Zombie (the idea was there, but this name for it is more characteristic of the Final Fantasy games)
- Talking Is a Free Action snowclones:
- Took a Level In [X], (from Taking a Level in [Character Class])
Dungeons & Dragons is the Trope Codifier for:
- Armor and Magic Don't Mix. Also co-Ur-Example with The Fantasy Trip, which came out the same year as the Holmes Basic Set and provides the earliest justified example.
- Character Level
- Class and Level System
- Hit Points
- Skill Scores and Perks
- Demand Overload: The original edition had a first run of 1,000 copies. It sold out within weeks.
- Name's the Same: The Grimlocks here are expies of the Morlocks from H. G. Wells' novel The Time Machine, not the Tyrannosaurus rex Dinobot Grimlock.
- The Wiki Rule: In addition to probably having one for every single one of its settings, the core rulebooks for 3.5E plus the Expanded Psionics Handbook were ported to a website under the Open Game License, The Hypertext d20 SRD.
- Box Office Bomb: Budget, $45 million. Box office, $33,807,409.
- Deleted Scene: Found on the DVD, with commentary. Some were removed to stop plot-holes.
- Though there's also the scene of Ridley and Marina in the map, which was removed despite containing the setup for the entire story. Some very awkward exposition was shoved in afterwards instead.
- Executive Meddling, Screwed by the Lawyers: First-time filmmaker Courtney Solomon tells a harrowing tale of meddling by TSR's owner (who rejected several famous directors, including James Cameron and Francis Ford Coppola), by the threat of a lawsuit from Wizards of the Coast who were trying to reclaim the movie rights; the terms of the settlement required, among other things, that he use an old script that had been approved by TSR years ago instead of an updated version that he had wanted to use. Source.
- Money, Dear Boy: Jeremy Irons rather famously took the role of Profion to pay for the refurbishment of a castle he had just bought (how appropriate). On the other hand he seems to be having a wonderful time playing an EVILLLL wizard. Certainly more fun than the audience is having.
- Running the Asylum: Courtney Solomon's credentials consisted of being a D&D fanboy and spending ten years trying to get a D&D movie made. This does raise questions about why it has nothing to do with the source material.
- What Could Have Been: There were a lot of things that had to be cut because they didn't have the money to pull them off. Some of these unfinished scenes are on the DVD. Also, see Executive Meddling above.
- Note that the most expensive cut scene actually contained the entire set-up for the main plot! Solomon was then forced to shoehorn in some awkward expository dialogue in the scene directly afterward.
The Animated Series:
- Executive Meddling: Not much, but still present. Eric turned out the way he did because of this.
- Exiled from Continuity: It was one of the few Hasbro-related cartoons to not air on Discovery Family (formerly The Hub), as Disney owns the rights to the series.
- What Could Have Been: The script for the unaired final episode.