Murfy Stamp
Murfy Stamps are given to the player in Rayman 3 and Rayman: Hoodlums' Revenge, they are used to rate the player's score in a level.
In Rayman 3
In Rayman 3, Murfy stamps can be seen in the summary screen for each level in the pause menu. Unless a certain score has been surpassed, a sad-faced stamp of Murfy will be seen; surpassing the set score will replace it with a happy-faced stamp of Murfy.
Scores
In Rayman: Hoodlums' Revenge
In Rayman: Hoodlums' Revenge, Murfy Stamps are items that are given to the player at the end of each level. The higher the player scores, the more likely he or she is to gain up to three Murfy Stamps, which are needed to unlock bonus levels.