Certification
- Australia:M
- Brazil:14
- Canada:14A (Manitoba/Nova Scotia, DVD rating)
- Canada:G (Quebec)
- Egypt:Not Rated (DVD rating)
- France:10
- Germany:12 (season 2, DVD rating)
- Germany:6 (seasons 1 and 3, DVD rating)
- India:15+ (self-applied)
- Ireland:15
- Italy:BA
- Japan:7+
- Mexico:PG (DVD rating)
- Netherlands:9 (season 3)
- Netherlands:12 (seasons 1 and 2)
- New Zealand:M
- Norway:15 (HBO)
- Philippines:R-13
- Poland:12 (self-applied)
- Singapore:M18
- Singapore:NC16 (season 2)
- South Africa:16
- South Korea:15
- Spain:18
- Spain:12 (season 3, DVD rating)
- Spain:7 (seasons 1 and 2, DVD rating)
- Sweden:16+ (self-applied)
- United Kingdom:15
- United States:TV-MA (original rating)
- United Arab Emirates:PG-15 (self-applied)