A promotional smartphone app lets you play a minigame using ... the package for LittleBigPlanet Vita. The "PlayStation Official App" allows European Vita fans to scan the cover of the game, whether in a store or at home, and then play "a fantastic mini-game with you controlling the hero of the creative adventure series, Sackboy."
You can also watch a trailer, and place virtual Sackboys in photos. Really, this is more of a promotional app than a standalone game experience, but at least it's a novel promotion! We have only one question: why is this a phone thing instead of a Vita AR app?