The Dark Room is continuing their tradition of adapting popular cult movies for their micro-stage (and micro-budget.) And GHOSTBUSTERS is perfect for their sensibility. So much of the fun is watching how they'll re-create the special effects on their cheaper scale. So I won't spoil it, but they do find a way to get slimed, show the ion streams catching a ghost, and even have the Stay Puft Marshmallow Man (I will reveal, in case you're worried, they don't do it in a way that gets the audience, stage, or actors messy. This isn't like a Primitive Screwheads show) And they do a pretty faithful recreation of the entire story. But the funniest parts are when they deviate from the movie and make jokes about other movies and their other roles. Without those bits, a straight-forward recreation of the movie is about as fun as watching someone else play Ghostbusters.
Oh yeah, and a special shout-out for Adam Vogel in the Louis Tully (Rick Moranis in the movie) role. He absolutely nailed it and he was hilarious.