Jurassic World is the fourth installment in the Jurassic Park series. The first was Jurassic Park in 1993, which earned more than $1 billion globally. The latest movie was the most popular film of the weekend in all 66 countries where it was released. There are many reasons why the film did so well on its opening weekend. One reason is the fact that many parents who watched the first Jurassic Park when they were children took their own kids along to see Jurassic World. Another reason is because the movie opened on the same weekend in China as it did in the US. It is unusual for any movie to be released at the same time in the two countries. China is the world's second biggest film market.