Joss Whedon has revealed that he has no plans to make a Firefly film.
There had been talk of a big-screen version of the cult sci-fi series, following the success of a campaign to fund the Veronica Mars movie, but the show's creator said it won't be happening anytime soon.
Joss - who is directing The Avengers 2 - told Buzzfeed.com: "I've said repeatedly that I would love to make another movie with these guys, and that remains the case. It also remains the case that I'm booked up by Marvel for the next three years, and that I haven't even been able to get Dr Horrible 2 off the ground because of that. So I don't even entertain the notion of entertaining the notion of doing this, and won't."
Castle star Nathan Fillion, Homeland's Morena Baccarin and Summer Glau starred in Firefly, which ran for only one series of 14 episodes before it was cancelled. It has gained a huge following since it was off the air, and has expanded to comic books and a game.
Joss continued: "Couple of years from now, when Nathan no longer [on] Castle and I'm no longer the Tom Hagen of the Marvel Universe and making a giant movie, we might look and see where the market is then. But right now, it's a complete non-Kickstarter for me."
The 48-year-old, who has directed his version of the William Shakespeare play Much Ado About Nothing, said the online drive for fans to offer funds for the Veronica Mars film gave him "unfettered joy" because he feels this is a "real game-changer" and "opens the floodgates".