Setting the scene
After Titanic, James Cameron spent years developing 3D cameras and motion-capture stages he called Fusion 3D, while Hollywood chased higher ticket prices from premium formats. Blockbusters increasingly relied on spectacle as DVD sales declined, and studios wanted franchises that could justify theme-park rides. Cameron pitched a sci-fi allegory about colonialism on a lush moon called Pandora.
What happened
Avatar opened worldwide on December 18, 2009, starring Sam Worthington as paraplegic Marine Jake Sully and Zoe Saldaña as Na'vi princess Neytiri via performance capture. Jake infiltrates the Na'vi through an avatar body while Colonel Miles Quaritch, played by Stephen Lang, prepares to strip-mine unobtanium. The film's bioluminescent forests and dragon banshee flights were designed for IMAX 3D immersion.
Why it still matters
Avatar grossed roughly $2.9 billion, reclaimed the all-time box office crown for over a decade, and pushed theaters to install 3D projectors en masse. Its environmental and indigenous-rights themes sparked debate even as audiences returned for spectacle. Memorable detail: Cameron and linguist Paul Frommer invented the Na'vi language with thousands of words, including grammatical rules used in ritual scenes.
Background
Cameron's epic held the all-time box office crown for years.