How long is World War Z campaign?

Related questions

1. How many hours of gameplay is Wwz?
2. Has World War Z got single player?
3. How many player is World War Z?
4. Is World War Z going to be an open world?
5. Does World War Z have matchmaking?
6. Is World War Z offline co op?
7. Is World War Z an online game?

Tags

1. #around
2. #sitting
3. #buddies
4. #chapters
5. #finish
6. #estimate
7. #different
8. #obviously
9. #depending
10. #mission
11. #single
12. #chapter
13. #going
14. #playthrough
15. #would
16. #hours
17. #wanting
18. #start