Sonic the Hedgehog 4 Episode 1 - 2010 VG is rated/received certificates of: Australia:G USA:E
Sonic the Hedgehog - 1991 VG is rated/received certificates of: UK:PG USA:Approved
Sonic the Hedgehog - 1996 V is rated/received certificates of: UK:PG USA:G
Sonic the Hedgehog Gameworld - 1994 VG is rated/received certificates of: USA:E
Sonic the Hedgehog - 1993 is rated/received certificates of: USA:TV-Y USA:TV-Y7 (some episodes)
Sonic the Hedgehog 3 - 1994 VG is rated/received certificates of: Australia:G USA:K-A (re-issue)
Adventures of Sonic the Hedgehog - 1993 is rated/received certificates of: Singapore:G UK:U (video rating) USA:TV-Y
Sonic the Hedgehog 2 - 1992 VG is rated/received certificates of: Australia:G UK:PG USA:E (re-release)
Sonic the Hedgehog - 2006 VG is rated/received certificates of: Australia:PG Germany:6 Japan:U (CERO) UK:12 (PEGI) USA:E10+
No episode in all the sonic the hedgehog shows does it show sonic the hedgehog's feet
the first episode of sonic x
Sonic the Hedgehog 4: Episode 2