Contains one of the longest no-cut fight scenes in movie history: the fight up floor after floor lasted four-plus minutes.
According to the director on the special edition DVD, the continuous fight scene took five full takes for a variety of reasons, including stunt objects not breaking and the stunt mat not being in place in time. The five takes were filmed over a one-month period.
Tony Jaa has developed a new style of Muay Thai specially for the film: "Muay Kotchasan" is based on elephants' movements ("throw, stamp on, grab, break").
This is the first Thai film to be a "top ten film" at the American box office on its opening weekend, opening in fourth place.