Dice of The Living Dead is a free print-and-play zombie survival horror game.
zombie
Zombie Escape Rules
Zombie Escape is a Warhammer 40K modification for Imperial Guard versus Zombies
Zombie Plague Rules
Fortress Figures offers “Zombie Plague”, a set of free wargames rules for horror scenarios. The free game goes with their excellent (and humorous) zombie plague figures. Check them out.
Zombie Rancher Game
Invisible City Productions offers Zombie Rancher, “A post-zombie apocalypse game of entrepeneurisim for two or four players.”