GRUMBLIES are interactive creatures that live secretly hidden from mankind. Short-tempered and mischievous, bands of Grumblies create supernatural chaos, such as earthquakes and volcanoes. Some have tried to separate and tame them, but be warned…..Messing with Grumblies could lead to an epic MELTDOWN! DON’T SHAKE, DON’T POKE, DON’T FLIP! Push them too far and they MELTDOWN!!!!!