Uninvited guests often cause problems and frustration, some more than others.

Maggie Kimbal, a savy D&D character, meets Harry and Hermione at an early age. Melding D20 and HP magic, the trio proceeds into the field of Technomancy and "Global Optimization". How will they cope with incompetent opponents, impossible research goals, subplots, and tricky hijinks? Munchkining Harry Potter style, of course.

Imagine everything went perfectly well, bullets dodged and everything as in H.P. and the chamber. Well, the H.P. and the Nat 20 story is so good I felt tempted to do something myself.

The mage-lords of Hyboria has sent themselves into eternal magical sleep to escape their sorcerous foes. And so they now find themselves in another world and another time. In so doing, they shall bring a new age of magic, one that will see themselves as Overlords of this Earth.

Shortly before the Fall of Voldemort the first time, a second prophecy is spoken, but not by a wizard or witch. Instead, a hidden community is drawn into the affairs of a world they normally avoid. This will go through three different parts, the romance does not happen until Hermione is of legal age

Rangers: Men and women who explore the darkest recesses of the wilderness. When a Half-Dragon Half-Elven Ranger appears at Hogwarts before the start of the fifth year will set into motion a chain of events that will change the life of one Jade Potter forever. Fem-Harry

After living in his brothers shadow, a group of dimensional travelers land, taking Harry and Luna away to a continent of strife and adventure. HPLL. Crossover HP/DnD uses Pathfinder classes/deities but original kinda generic setting.

My 2010 Nanowrimo story. A crossover between Harry Potter and Advanced Dungeons and Dragons. Harry ends up in an ADnD world at a young age. Trained as a Ranger, when Dumbledore gets him back he's not a little boy any more.

Harry finds a mysterious character sheet that allows him to gain levels and advances as a character... from Dungeons and Dragons! How will he handle this new power? What is Dumbledores terrible secret? Can Ron really eat his weight in pie? Join us for all this, and more, in the next instalment of... The Character Sheet of DeStInY

A dwarf cleric miscasts a miracle for some barrels of beer. Harry, age six, is chosen and taken to the Material Plane. Now at thirty-one, Archduke and powerful axe wielding warrior of might and magic, he finds with his fellow adventurers a mirror that acts like a portal and is connected to the veil. What world will he end up choosing in the end? D&D crossover. Adult Harry.

At the end of Book 5, someone passed beyond the Eternal Boundary. Now, a group of planewalkers will show the wizarding world that it's not as eternal as they thought. Crossover with the Planescape DnD campaign setting. New and improved for Pathfinder!

The members of Clan Cur Roleplaying play a Harry Potter themed DnD match featuring permanent emotional scarring, horrrible sex jokes, a multiple-personality warlock and all things that are in horrible taste. Harry Potter Session 1

The Basilisk wasn't the only thing Hidden in the Chamber of Secrets. They were once a forced to be reckoned with, now army could face them, no wizard enslave them, and now one of the Warforged is awake. Pairings HP/HG GW/LL

Que pasaría si, previendo problemas futuros, Dumbledore pide la ayuda de un dios malvado De D&D y este la envía...En la forma de su propio hijo, Sorin Maastrach? Este joven vampiro ayudará, pero...a su manera Situado en 2º año

Because of a Freak accident-Harry saves himself&Dudley from being burned alive. To complicate things, they arrive in a magical tower that is very much alive. How will a veteran Dudley &Harry react when they are summoned to the tournament by force?

First fic. A drow baby is found by a witch what happens if she grows up in the wizarding world?

The world of magic is more vast then Harry or Voldemort could possibly imagine. It even extends to other planes of existence...and they're starting to notice what's going on.

What if Harry found a long lost library? What if it contained ancient magical secrets that are over 200 million years old? And what if he had to use them to fight back a army of devils bent on conquest? Eberron Setting. First Fic. Beta needed.

Ioun god of prophecy has seen the fall of the gods. Orcus has consolidated power on a planet the gods have forsaken, that planet is Earth. Though Ioun has seen disaster he has also seen hope in the birth of a child with power to rival a god. AU

Dumbledor is about to go to privit drive to drop off Harry when he receves a visit from six strangers.

Harry, Matthew, Hannah, Terry, and Hermione... five names that shall forever change the Magical World. How so you might ask? Well, it all started with a game... a game called Dungeons and Dragons...

Severus Snape actually finds someone that loves him as much as he loves her, but what happens when he throws it all way to follow a leader that doesn't care if he lives or dies? Will he ever be able to make it up to her? SlightMarySuealert.AU MarauderEra

AU Order of the Phoenix, with a twist.