Ready or Not

Ready or Not is a movie starring Samara Weaving, Adam Brody, and Mark O'Brien. A bride's wedding night takes a sinister turn when her eccentric new in-laws force her to take part in a terrifying game.
When a young bride marries into a ridiculously rich and delightfully deranged family, her wedding night becomes her worst nightmare as she's forced to play a lethal game of hide-and-seek and must fight to stay alive.