"Along With the Gods: The Two Worlds" has topped 13 million in attendance, becoming the fifth most-watched film.
Since its release Dec. 20, the fantasy blockbuster had attracted 13,039,675 viewers as of Tuesday, the Korean Film Council (KOFIC) said.
It replaced "The Thieves," which sold 12.98 million tickets in 2012, at No. 5.
"Along With the Gods" is the first installment of a two-part series directed by Kim Yong-hwa, based on a popular Joo Ho-min webtoon.
The sequel is scheduled to be released this summer.