If you like King, read H.P. Lovecraft. In fact, read these particular stories, his dmaned best:
The Colour out of Space, a story of a meteorite crashing onto a small New England farm, and the subsequent events that follow the destruction of what appears to be a bubble of an alien colour...
The Call of Cthulhu, his most famous story spun in a three tiered narrative, starting with a nephew's discovery of his late uncles investigation of an aeon old cult and ending with the day their god rose from the depths of the oceans...
The Shadow Over Innsmouth, a story of a tourists escape from a monstrous sea-side town where everyone and everything is against him...
The Shadow out of Time, wherein a professor's body is possesed by an alien intelligence and his mind thrust back in time...
The Mound, a story of the disovery of a strange and hideous underground realm of the undead...
The Dream-Quest of Unknown Kadath, an epic and fantastical narrative of an adventurer in a dreamworld searching for a beautiful sunset city, who must escape various perils and defeat various horrors in order to demand it's location from the very gods of Earth and their unspeakable protector...
The Hound, a grotesque and verbose narrative of two graverobber's hideous realization that not all graves contain the dead, or even the mortal, for when they steal an ancient amulet, a terrible curse is unleashed...
I also vastly reccomend looking for any kind of collection of Conan stories by Robert E. Howard - you can get them all in 2 books in the Fantasy Masterworks series. Howard's stories are absolutely amazing in their description, pacing, action and overall feeling.
Also, check out Harry Harrison's 'Deathworld' trilogy - a series of short, pulpy novels that have a great sense of adventure and sci-fi ingenuity.
