Frozen Sven Rescue Game

How to play the game "Frozen Sven Rescue Game"?

Sven was out with Kristoff in the mountains when he slipped and fell into a frozen piranha-infested river! We didn’t even know they had those in Arendelle! Sven’s legs have turned into blocks of ice and he has lots of painful piranha bites. Kristoff has rushed Sven to Arendelle palace where Elsa is going to use her magic to heal him in this Frozen game. Will you help care for Sven?