First was a Star Wars thing, just got to 10 pages or so. After that I did a High Fantasy called the 'Saga of Tieldor', where the eponymous hero rides a gryphon and goes around saving people and annihilating evil armies, though in the middle of the story he climbs up this tower and stuff happened. Then he went back down and got and set about looking for an apprentice. I did not finish it because my writing skills at the time were not satisfactory. Then, I made this fanfic about Warcraft (yeah, I liked it at the time) about this Orc Shammie. Didn't work out either, though I had slightly improved my writing skills.
As I was a little older, with much more failures, I got this idea about a huge Dark Fantasy about mages, where the mages get their powers from interbreeding with dragons. The blood of the half-dragons is passed down all the way to this one minor noble whose fortress just got sacked, and he was fleeing the place wen he is discovered by some mages. Long story short, he found out that he was more powerful than his peers, which was because his own father was one of the original dragons. Eventually, I lost interest of the story as I wanted a modern version with guns and swords ala Devil May Cry.
The result? A story where centuries ago, demons were summoned into Germania, and a tribe, wanting to destroy the Roman Republic/Empire, interbred with them for the promise of power. The coupling results in the first berserkers, with superhuman strength, endurance, and speed, but with a fiery temper. One small thing could drive them into a rage. This was troublesome at times, so the tribe started training them to control their rage. Some of them also had magic, though this was rare. When the time came, the Romans conquered a small part of Germania. That was a grave mistake, for three whole legions were slaughtered. Fast forward in time, and the Berserkers have not only extinguished the light of Rome, they have expanded throughout Europe, from Spain all the way to Romania. Meanwhile, Rollo settles in Northern France, and all the way to Guilliaume du Normandie, who conquers Britain. His great-great-grandson, of the Berserker Plantagenets, nicknamed the devil's brood, reigns, and from his bastard son, Philip du Cognac, the bloodline continues. All the way to the present day, where the protagonist is but one of the many berserkers in the world.