Deadworld
Caliber Comics.
Book 1 (1-8; w Stuart Kerr; a Vince Locke). 
Book 2 (9-13 + other stories; w Stuart Kerr, Jack Herman, Gary Reed; a Vince Locke, James O'Barr, Mark Bloodworth). 
Requiem for the World (1-6; w Gary Reed; a Dalibor Talajic). [From Image Comics: The introduction of the classic horror series, DEADWORLD, to a new audience! Considered by many to be the original zombie comic, DEADWORLD ripped into the undead with intelligent zombies on a mission and the poor teens riding in a school bus desperately try to stay one step ahead of the King Zombie. Death, mayhem, and a touch of supernatural evil made DEADWORLD a classic and now here's your chance to get into the story!] 
Realm of the Dead (4-issue mini; w Gary Reed; a Chris Morea). [From Caliber: Deadworld and Realm together! With the devastation of Daemonstorm causing such destruction and death, the oracles form the Deadworld have sensed the great outcry from the anguished souls and seek to have the inhabitants of the Realm added to their collection.] 
Dead-Killer (Trade Image; Killer and the King 1-3, Dead-Killer 1-shot; w Gary Reed; a Rom McCain). [From Image Comics: A mysterious man rose from the ashes of a Deadworld. He was a killer, a hunter… and his prey is the undead's leader, the intelligent zombie known as King Zombie. Only one will survive. A collection of the Dead-Killer's appearances from the original DEADWORLD series.] 