The new Avatar film has passed $1 billion at the global box office

It's another achievement for Cameron, who has already directed three of the four biggest films of all time in the global box-office market, with Avatar at the forefront.

The film cost $350 million to produce and $150 million to market, according to Variety.

There are plans for two more films in the Avatar series, but the director is not entirely sure whether they will be produced.