South Korean filmmaker Bong Joon-ho's English language debut film, "Snowpiercer," has attracted more than 4 million viewers in seven days of opening, its local distributor said Wednesday.

The film, starring top Korean actor Song Kang-ho alongside Hollywood thespians Chris Evans, Ed Harris and Tilda Swinton, attracted an accumulated total of just over 4 million viewers on Tuesday, according to CJ Entertainment.

It took only seven days for the flick to surpass the milestone after opening, which if confirmed is a record for the fastest ascent to 4 million views in local theaters.

"Such a high-speed box-office run is expected to continue for the time being as more moviegoers are coming to see it in the second week of opening than the first week," the company said in a release.

Based on the French graphic novel "Le Transperceneige," the sci-fi action thriller depicts the inter-class struggles among the world's last-remaining inhabitants aboard a perpetually moving train. (Yonhap News)