Avatar hits $1-bn mark at box office

Avatar, the most expensive film ever, could also be on track to be the most successful as it broke the $1-billion mark at box offices worldwide over the weekend.

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, the most expensive film ever, could also be on track to be the most successful as it broke the $1-billion mark at box offices worldwide over the weekend.

Since its opening last month, the 3D sci-fi spectacular has taken in $352.1 million in North America alone and $1 billion worldwide.

This weekend,

Avatar

added another $68.3 million in North American box offices, setting a new record for a film in its third week. That record had previously been held by

Spider-Man

with $45 million.

If

Avatar

is to become the most successful film of all time it will have to beat the last blockbuster by its director James Cameron.

Titanic

remains at the top with $1.8 billion at the box office.