13 Beloved (2006)
13 Beloved ( or 13 Game Sayong, also 13: Game of Death) is a 2006 Thai horror comedy/psychological thriller film written and directed by Chukiat Sakveerakul and starring Krissada Sukosol Clapp. The story, about a man who is led through progressively challenging, degrading, and dangerous stunts by mysterious callers from an underground reality game show, is adapted from the 13th Quiz Show episode in the My Mania comic-book series by Eakasit Thairaat. It was the second feature-length film for Chukiat, who previously directed the horror film, Pisaj.
More at Wikipedia.