Notice

A notice, commonly is a unique, special message that appears whenever the player has unlocked a secret, whether it is a character, a stage or a game mode, and basically exclaims said feature has now become available. It is one of the many features from the Super Smash Bros. series to be carried on to the Super Smash Flash series.

Notices in Super Smash Flash
Super Smash Flash has very simple notices that only read something has been unlocked or become available. However, the notices make no references or word plays whatsoever about the unlocked feature, unlike notices in Super Smash Bros. Melee. This is mainly because there was a character limit for the text that forced some long names to be abbreviated. Any acquired notice can be seen in the "Special" section from Data.

Notices in Super Smash Flash 2
Super Smash Flash 2 has had notices in old demos versions that contained the first unlockable content, beginning with v0.7. Once the game is completed, different notices will be made available.

In demo versions
Below are the notices found in demo versions listed per version released.