Firefly

The Firefly Role-Playing Game is a science fiction tabletop role-playing game released in 2014, written by Monica Valentinelli and set in the universe of the Joss Whedon television show Firefly. Firefly takes place in a space Western setting where high technology mixes with frontier life on newly terraformed planets. It was produced by Margaret Weis Productions, Ltd, and uses the "Cortex Action" variant of the Cortex Plus game system.