Other works

Has written such action/adventure comics as "Alien Legion," "Punisher," "Black Terror," and "Racer-X".

Wrote the limited four issue series "Car Warriors" with Steve Dillon for Epic Comics in the early 90s.

Graphic novel: "Jungle Rules" / "Philly Narco" (2008, Bruno Books)(with artists Juan Zanotto and Victor Toppi)

(2011) Novel: SEAL Team Six

(2012) Novel: SEAL Team Six 2

(1988) Graphic Novel: WinterWorld (artist: Jorge Zaffino)

(2010) Graphic Novel: WinterSea (artist: Jorge Zaffino)(published in the 2010 trade paperback edition of WinterWorld)

(2012) Novel: SEAL Team Six 3

(2012) Novel: SEAL Team Six 4

(2015) Graphic Novel: Joe Frankenstein (created with Graham Nolan)

(2013) Novel: SEAL Team Six 5

(Forthcoming) Sword of Wood

(2013) Novel: Bad Times #1: Cannibal Gold

(2015) Novel: Levon's Night (Levon Cade series #2)

(2015) Novel: Bad Times Book 4: Helldorado

(2014) Novel: Levon's Trade (Levon Cade series #1)

(2014) Novel: Bad Times Book 2: Blood Red Tide

(2015) Novella: Levon's Ride (Levon Cade series #2.5)

(2014) Novel: Bad Times Book 3: Avenging Angels

(2015) Novel (under pseudonym Linus Oakes): Gomers

(2015) Novel: WinterWorld - The Mechanic's Song

(2016) Novel: Levon's Run (Levon Cade series #3)

(2016) Novel: Shrinkage - A Novel of Petty Theft

(2023) Rippaverse Comics: Alphacore #1

(2024) Rippaverse Comics: The Horseman

(2025) Rippaverse Comics: The Great War of Separation #1