NEW YORK — The Christian drama “War Room” made a surprise bid for the weekend box-office lead, Zac Efron’s music drama “We Are Your Friends” fell flat and “Straight Outta Compton” keeps chugging along.

The Efron film opened with just $1.8 million on 2,333 screens. That makes it one of the lowest weekend openings ever for a film that played so widely. Estimated sales at U.S. and Canadian theaters:

1. “Outta Compton,” $13.2 million

2. “War Room,” $11 million

3. “Mission: Impossible — Rogue Nation,” $8.3 million

4. “No Escape,” $8.3 million.

5. “Sinister 2,” $4.7 million.

6. “Man From U.N.C.L.E.,” $4.4 million.

7. “Hitman: Agent 47,” $3.9 million.

8. “The Gift,” $3.1 million.

9. “Jurassic World,” $3.1 million.

10. “Ant-Man,” $3.1 million.