Official Nintendo Seal

The Official Nintendo Seal, originally called the Official Nintendo Seal of Quality, is on the back of every current Nintendo merchandise of any kind. Anything with the Official Nintendo Seal is considered canon. After the Video Game Crash of 1983, customers were wary of buying video games since most recent games were of poor quality. To counter this, Nintendo put Nintendo Seal of Quality on all of their merchandise. This assured the market to slowly get used to higher quality games.