However, based on box office gross, the most popular movie of 1998 is likely Titanic, which raked in over $2.2 billion worldwide.
Other contenders for the title of "most popular" could include:
* Saving Private Ryan, a critically acclaimed war film with a strong box office performance.
* The Truman Show, a thought-provoking and culturally significant film that garnered widespread attention.
* A Bug's Life, a Pixar animated film that was a commercial and critical success.
Ultimately, the answer depends on your definition of "popular."