From publisher blurb:
In House of Keys, the characters are adventurers who stumble into a decrepit mansion to avoid a violent storm raging outside. But once inside, the characters find the mansion has secrets it intends to keep hidden. A twisted and malevolent energy holds the adventurers hostage. Passageways reach dead ends. Doors open to brick walls. Trap doors lead to stairs going nowhere. Sounds echo from places unseen. Unreachable. Unthinkable. Apparitions follow wherever the characters go. And somewhere, at the heart of the mansion, lies an ancient evil, toying with the characters like a cat with a dying mouse.
Are the apparitions sent by this ancient evil? Or are they past explorers trying to help? The hour of perdition is at hand. Death is imminent. Only one escape lies before them. Can the characters find it? Or will fear and mistrust swallow them whole?
Praxis is a series of story roleplaying games that thrusts characters into dramatic situations and is based on the principles of the Protocol game system. Each game uses the same set of rules, with vastly different parameters, start-points, roles, plot twists, and finales. Praxis does not play like a traditional roleplaying game. It does not require a gamemaster. There is no script. No endpoint. No cumbersome or extraneous mechanics detracting from the story. An entire epic can be played in under four hours.