Fickle RPG

Fickle RPG is

a narrative roleplaying and cooperative storytelling game, distinguished by the core dice resolution mechanic which has bluffing, bidding, and meaningful decisions. The game is a universal system that can be played in any genre, such as sci-fi, military, zombies, high fantasy, superheroes, etc. An ongoing campaign can be played over multiple game sessions, or as a themed one-shot.

Dread Roleplaying Game

Dread is a role playing game that uses an innovative mechanic — a Jenga game — to resolve actions and build tension.

There are both free and paid versions.

CthulhuTech RPG Rules

For those who like to get in on the ground floor, Wildfire Games has an open Beta Test of its new CthulhuTech RPG Core Book.

Living Dead Zombie Rules

Living Dead is a set of free roleplaying rules for the zombie apocalypse.

Contagion Role Playing Game

Contagion is a role playing game of modern horror, in which the forces of Heaven and Hell are fighting for the souls of mankind.