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Harry Potter and the Methods of Rationality
by Less Wrong reviews
Petunia married a biochemist, and Harry grew up reading science and science fiction. Then came the Hogwarts letter, and a world of intriguing new possibilities to exploit. And new friends, like Hermione Granger, and Professor McGonagall, and Professor Quirrell... COMPLETE.
Harry Potter - Rated: T - English - Drama/Humor - Chapters: 122 - Words: 661,619 - Reviews: 30229 - Favs: 16,580 - Follows: 14,536 - Updated: 3/14 - Published: 2/28/2010 - Harry P., Hermione G. - Complete
Naruto: Fractured Fate
by 10000 Fists reviews
During his battle with Sasuke at the Valley of the End, Naruto passes away only to find that his life is a video game. Intelligent!Naruto, Sarcastic!Naruto. Rated M for violence, language, and some sensual content much later on.
Crossover - Fallout & Naruto - Rated: M - English - Adventure - Chapters: 12 - Words: 94,018 - Reviews: 513 - Favs: 1,811 - Follows: 2,108 - Updated: 11/6/2014 - Published: 11/6/2012 - Naruto U.
Naruto: Game of the Year Edition
by Majin Hentai X reviews
On Hiatus due to Real Life and I'm sorry so deeply sorry for the broken promise
Naruto - Rated: M - English - Adventure/Parody - Chapters: 22 - Words: 208,515 - Reviews: 2593 - Favs: 4,796 - Follows: 4,808 - Updated: 6/3/2014 - Published: 1/27/2009 - Naruto U.
Harry Potter and the Children of Change
by T. E. Tanglebrooke reviews
A 73 year old Harry dies in a tragic accident and finds himself in his 15 month old body again. Young!Tonks HP/NT/HG. currently year 3 Disclaimer: I don't own Harry Potter or the universe he finds himself in.
Harry Potter - Rated: T - English - Humor/Adventure - Chapters: 61 - Words: 286,698 - Reviews: 3382 - Favs: 5,293 - Follows: 6,228 - Updated: 3/5/2014 - Published: 2/21/2011 - Harry P., N. Tonks
A Jedi's Path version 1
by Angeldoctor reviews
What would happen if Harry Potter was born in the Star Wars universe? What if he met Jaina and Jacen at a young age? What would change? Grey Harry! Book 1 of 4. Rewritten!
Crossover - Star Wars & Harry Potter - Rated: M - English - Adventure/Romance - Chapters: 34 - Words: 375,361 - Reviews: 798 - Favs: 960 - Follows: 919 - Updated: 2/4/2014 - Published: 7/8/2012 - Jaina S., Harry P. - Complete
Harry Potter and the Temporal Beacon
by willyolioleo reviews
At the end of 3rd year, Hermione asks Harry for some help with starting an interesting project. If a dark lord's got a 50-year head start on you, maybe what you need is a little more time to even the playing field. AU, Timetravel, HHr, mild Ron bashing. Minimizing new powers, just making good use of existing ones.
Harry Potter - Rated: T - English - Adventure - Chapters: 70 - Words: 428,826 - Reviews: 5004 - Favs: 4,445 - Follows: 5,012 - Updated: 9/19/2013 - Published: 11/30/2010 - Harry P., Hermione G.
Making a Difference
by Halt.CPM reviews
AU, Dimension Travelling. Just one of those fics everyone gets the urge to write about. Semi-crack, I guess.
Harry Potter - Rated: T - English - Adventure/Humor - Chapters: 16 - Words: 59,047 - Reviews: 488 - Favs: 972 - Follows: 1,212 - Updated: 5/16/2013 - Published: 4/13/2012 - Harry P.
Backward With Purpose Part I: Always and Always
by Deadwoodpecker reviews
AU. Harry, Ron, and Ginny send themselves back in time to avoid the destruction of everything they hold dear, and the deaths of everyone they love. This story is now complete! Stay tuned for the sequel!
Harry Potter - Rated: M - English - Chapters: 56 - Words: 287,186 - Reviews: 4070 - Favs: 4,662 - Follows: 1,611 - Updated: 4/14/2013 - Published: 2/28/2008 - Harry P., Ginny W. - Complete
Harry Potter and the Unlocked Knowledge
by kmfrank reviews
When Harry returns home to Privet Drive after the fiasco at the Department of Mysteries, he finds that Voldemort's possession released the Horcrux inside of him. In addition to the companionship of "Tom", Harry has his knowledge, and must learn to use it
Harry Potter - Rated: T - English - Adventure/Humor - Chapters: 15 - Words: 168,125 - Reviews: 1167 - Favs: 2,971 - Follows: 3,392 - Updated: 2/20/2013 - Published: 1/10/2008
The Wizard from Earth
by Morta's Priest reviews
Living for a century is an accomplishment, even for a wizard. Two is a rarity. Living them all? That is the territory of the gods. Harry Potter remembers a cat's glowing eyes, a strange old man with a wicked smile, and pain. It is the year 3050 B.C.E. and he has all of history as his future.
Crossover - Harry Potter & Man from Earth - Rated: T - English - Adventure/Fantasy - Chapters: 9 - Words: 80,321 - Reviews: 856 - Favs: 2,234 - Follows: 2,564 - Updated: 12/3/2012 - Published: 7/19/2012 - Harry P.
by The Crimson Lord reviews
On that fateful day, two Potters were born. One was destined to be the Boy-Who-Lived. The other was forgotten by the Wizarding World. Now, as the Triwizard Tournament nears, a strange boy is contracted to defend a beautiful girl.
Harry Potter - Rated: M - English - Adventure/Romance - Chapters: 19 - Words: 159,330 - Reviews: 3468 - Favs: 7,918 - Follows: 8,047 - Updated: 4/29/2012 - Published: 9/22/2011 - Harry P., Fleur D.
Partially Kissed Hero
by Perfect Lionheart reviews
Summer before third year Harry has a life changing experience, and a close encounter with a dementor ends with him absorbing the horcrux within him. Features Harry with a backbone.
Harry Potter - Rated: T - English - Fantasy/Humor - Chapters: 103 - Words: 483,646 - Reviews: 14770 - Favs: 7,882 - Follows: 7,000 - Updated: 4/28/2012 - Published: 5/6/2008 - Harry P.
The Sun Dog
by enembee reviews
I am Harry Potter and I've just destroyed everything; space, time, matter and all twenty-six dimensions of our fragile little world in the twinkling of an eye. I am Harry Potter and I have just irreparably violated Global Causality. Take that Hawking.
Harry Potter - Rated: M - English - Humor/Tragedy - Chapters: 6 - Words: 25,932 - Reviews: 451 - Favs: 1,179 - Follows: 1,625 - Updated: 4/7/2012 - Published: 2/12/2011 - Harry P., N. Tonks
by Kittenn1011 reviews
Harry Potter wakes up one morning in the body of his ten-year-old self. This time around, he declares, no way anyone's going to die! -And it's gonna be totally awesome- "People shouldn't meddle with time, Potter." Little did they know...
Harry Potter - Rated: T - English - Chapters: 37 - Words: 116,434 - Reviews: 960 - Favs: 1,677 - Follows: 2,146 - Updated: 6/28/2011 - Published: 9/23/2009 - Harry P., Draco M.
It Isn't Easy Being a Hufflepuff
by trillium248 reviews
After Voldemort is defeated, Harry finds himself pulled into another dimension where Neville is the bwl and Harry is a… Hufflepuff? AU.
Harry Potter - Rated: T - English - Adventure - Chapters: 21 - Words: 85,820 - Reviews: 979 - Favs: 2,040 - Follows: 2,448 - Updated: 9/19/2009 - Published: 8/19/2008 - Harry P.