Last we heard - around a year ago - Firefly Online had convinced many of actors from the TV show to reprise their roles for the free-to-play online game. And they have.
There are videos on the Firefly Online website (and Firefly Online YouTube channel) of Nathan Fillion (Mal), Sean Maher (Simon Tam), Summer Glau (River Tam), Alan Tudyk (Wash), Ron Glass (Shepherd Book), Jewel Staite (Kaylee), Morena Baccarin (Inara) and Adam Baldwin (Jayne). The only person from the regular gang who seems to be missing is Gina Torres (Zoe).
Firefly Online is due out in some form this spring, for PC, Mac, iOS and Android. Given the platform spread, it's not about to rival Eve Online for complexity or looks. But that's not really the point.
A companion app called the Firefly Cortex launched on Steam earlier this year, to serve as a portal to everything the game does.
There's no new gameplay footage - beyond a little roam around a spaceship - beyond what was shown 8 months ago. May be worth a nose around when the time comes.