The Official Nintendo Seal (Original Nintendo Seal of Quality in Europe, previously Nintendo Seal of Quality in North America) is a seal that is put on all Nintendo video games, accessories, consoles, and so on that say that Nintendo has checked and licensed the selected item. The seal also appears either on the cover or within the pages of every volume of Nintendo Power magazine.
The Seal was first added in America and then later put in games in Europe and Australia. Very few games have not gotten the seal, though there have been a few. Action 52 was the first game NOT to receive this seal. Other examples are ones with horrible quality and ones that have extreme profanity/drug references/violence such as Conker's Bad Fur Day.