Firefly Online isn't really an MMO. But it does feature online interactions, and perhaps more importantly, it does feature the original cast together again. If you were hoping to hear Captain Malcolm Reynolds growl at you while you played the game -- and let's face it, odds are almost certain you were -- you can be happy to know that the main cast will be reprising their roles for the first time since the movie.
Alan Tudyk will also be voicing multiple roles, and Michael Fairman will be playing Niska, who is apparently hiring if you're none too worried about your conscience bothering you. The game is set to release in 2015 on multiple platforms.