HONG KONG – Korean period action film “Kundo: Age of the Rampant” has broken the opening day box office record in South Korea.

Opening Wednesday (July 23) it scored 551,000 spectators worth KRW4.08 billion (US$3.997 million), dethroning “Transformers: Dark of the Moon,” the previous title holder.

Released by financier and distributor Showbox, “Kundo” played in 1,250 theatres – or about 63% of the country’s cinema screens – and scored a market share of 77% of all tickets sold.

That put “How To Train Your Dragon 2,” also opening Wednesday on 660 screens, into a distant second place, with 11% market share. Its 72,000 ticket sales translated into a first day gross of $570,000.

“Dawn of the Planet of the Apes” released 13 days previously (July 10) slipped to third, with its $381,000 lifting its two week cume to $24 million.

Directed by Yoon Jong-bin, is a Robin Hood-like tale of militia who turn against unjust nobility. It stars Ha Jung-woo, star of “The Yellow Sea,” and Gang Dong-won (“Woochi”).

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“Kundo” is the first of four major period action movies set to splash into Korean theatres over the coming months, with others coming from rival distributors Lotte, CJ and N.E.W.