Ice Age: Continental Drift, which comes out July 13, is the fourth film in the animated franchise. Since Toy Story marked the beginning of the era of entirely computer-animated films, they've been a studio's safest bet for big earnings at the box office and beyond.
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Computer-animated films like Toy Story 3 are not only box-office draws, they also bring in money through toy sales and theme park rides.
Imagine you're a movie producer, and you've got a couple of hundred million dollars to gamble on a single massive blockbuster. Which genre do you suppose will be your safest bet — superhero? Action-adventure? Sci-fi? All of those have had huge successes, but they've also all had hugely expensive failures.
There's one genre, though, that's hardly a gamble at all. It's been almost foolproof since it first came into being in 1995: computer animation.