DreamWorks Animation has teamed with independent developer and publisher No Yetis Allowed to launch the interactive Pocket Shrek app.
The app allows fans of the orgre to feed Shrek and Donkey, make them sleep when they are tired, tickle them to make them laugh and even make Shrek fart.
Users can also collect stickers and play the Magic Mirror Game to unscramble images of iconic moments from the movies.
Fans can complete daily quests to progress through the game and earn gold coins to unlock a wide range of items and mini-games.
Pocket Shrek is free to download now for iOS via the AppStore.