In December 2007 Shadowline announced a contest for writers to send in a submission for a three-issue limited series featuring an all-new, creator-owned superheroine.

While it was announced in April 2008 that Tom Arguello was declared the winner for his entry, Incredible Journey the book itself never did go to print due to a lack of customer/comic-shop support through pre-orders.

[1] However, shortly after ComicCon 2008 it was announced that contest finalist Kat Cahill would have her semi-finalist submission I Hate Gallant Girl published by Shadowline with Seth Damoose as the series artist.

Later additions include Hannibal Goes to Rome,[2] Action, Ohio, Platinum Grit, Nightmare World, Li'l Depressed Boy and the Mundane Overrated Misadventures of Spudman.

Among the titles that will see print under the Silverline Books banner are Dear Dracula, Bruce The Little Blue Spruce, Missing the Boat and any future versions of PX!, The Surreal Adventures of Edgar Allan Poo, "Timothy and the Transgalactic Towel," "Rocketbots," and "Night of the Bedbugs."

Additionally, the website also runs a feature every Monday that gives details on any new comics that come out each week and on every Friday there is a 10 Questions interview with a given Shadowline creator.