The Silent Hill comics are loosely based on the Konami series and are all written, with the exception of Sinner's Reward, by Scott Ciencin, with various artists, and published by IDW Publishing. None of the comics have any direct connection to any of the games and I consider them to be an alternate universe

Silent Hill Sinner's Reward
Product: Graphic Novel
Released: August 2004 in America
ISBN #:ISBN-10: 1932382240
ISBN-13: 978-1932382242
Purchased: NEW, August 2004
Where:Comic Book shop
The first Silent Hill graphic novel by Scott Ciencin (Author), Ben Templesmith (Author) and Aadi Salman (Author).

Silent Hill Three Bloody Tales
Product: Graphic Novel
Released: October 2005 in America
ISBN #:ISBN-10: 1933239166
ISBN-13: 978-1933239163
Purchased: NEW, October 2005
Where:Comic Book shop
The second Silent Hill graphic novel by by Scott Ciencin (Author), Shaun Thomas (Author) and Nick Stakal (Author)

Silent Hill Dead/Alive
Product: Graphic Novel
Released: August 2006 in America
ISBN #:ISBN-10: 1933239948
ISBN-13: 978-1933239941
Purchased: NEW, August 2006
Where:Comic Book shop
The third Silent Hill graphic novelby by Scott Ciencin (Author) and Nick Stakal (Author).

Silent Hill Sinner's Reward
Product: Graphic Novel
Released: September 2008 in America
ISBN #: ISBN-10: 1600102387
ISBN-13: 978-1600102387
Purchased: NEW, September 2008
Where:Comic Book shop
The fourth Silent Hill graphic novel by Tom Waltz (Author) and Steph Stamb (Illustrator)