Official Nintendo Seal

The Official Nintendo Seal, known in PAL regions as the Original Nintendo Seal of Quality and formerly known in NTSC regions as the Official Nintendo Seal of Quality, is on the back of every current Nintendo official merchandise of any kind. 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 placed the Nintendo Seal of Quality on all of their merchandise. The Seal was also used to distinguish legitimate commercial games from pirated knockoffs.

References in Mario games

 * Cranky Kong often acts as a guide in Donkey Kong game manuals, complaining about the lack of quality in the games and stating they are not worthy of the Official Nintendo Seal of Quality.