The day before Halloween, five carnival employees are kidnapped & held hostage in an isolated compound known as "Murderworld". On Halloween, they are thrown into a sadistic game called "31" where they must survive 12 hours against a gang of maniacs dressed like clowns. It's time to play 31.
Malcolm McDowell, Richard Brake, Jeff Daniel Phillips
IMDB plot
Five carnival workers are kidnapped and held hostage in an abandoned, hellish compound where they are forced to participate in a violent game, the goal of which is to survive twelve hours against a gang of sadistic clowns.