U.S. / Canada - ESRB
U.K. - PEGI and/or BBFC
Australia - ACB
Germany - PEGI and USK
Japan - CERO
Europe-EU Countries - PEGI
And the list goes, I reckon.
Personally, I quite like ESRB and CERO as they're small and blend in with the covers rather than take too much space and make them colorful.
Here's a cover ruined by rating certificates:
What stupid shit is this?!? Who thought this'd be a good idea! I'm surprised they didn't add more.
MGS Legacy Collection cover looks weird with the empty space due to the USK big ass logo:
Ideally, covers would not have any of this rating certificates, but we're forced to have them depending where you live and/or where you buy them from.
U.K. - PEGI and/or BBFC
Australia - ACB
Germany - PEGI and USK
Japan - CERO
Europe-EU Countries - PEGI
And the list goes, I reckon.
Personally, I quite like ESRB and CERO as they're small and blend in with the covers rather than take too much space and make them colorful.
Here's a cover ruined by rating certificates:
What stupid shit is this?!? Who thought this'd be a good idea! I'm surprised they didn't add more.
MGS Legacy Collection cover looks weird with the empty space due to the USK big ass logo:
Ideally, covers would not have any of this rating certificates, but we're forced to have them depending where you live and/or where you buy them from.