The wild rumpus has begun, as Spike Jonze’s Where the Wild Things Are stomped the box office competition on Friday, according to early estimates. The adaptation of Maurice Sendak’s beloved children’s book grossed $11.9 million on its first day. The key question now is how much will Wild Things rise on Saturday? A significant jump on Saturday would indicate that families are embracing the PG movie, while a tiny uptick may signal that its support is mainly coming from hip teens and adults who were raised on the book. Landing in second place was the revenge thriller Law Abiding Citizen, which took out $7.7 million. Paranormal Activity, the cult horror movie made on a shoestring budget of $11,000, continued to terrify the numerous moviegoers eager to see it. In only 760 theaters, the film grossed $6.7 million for a staggering per-screen average of $8,754. Friday’s figures are below, and check back here on Sunday for the complete box office report.

1. Where the Wild Things Are — $11.9 mil

2. Law Abiding Citizen — $7.7 mil

3. Paranormal Activity — $6.7 mil

4. Couples Retreat — $5.8 mil

5. The Stepfather — $4.3 mil