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. Since then, the seal has lost its prestige. IGN.com writes that its inclusion on games such as Yoshi Topsy-Turvy is to blame.