Swim the seas as a fish eating fish.
Eat smaller fish to grow larger. Watch out for the bigger fish!; Arrow Keys
The Marauder's Map is a magical document that reveals all of Hogwarts School of Witchcraft and Wizardry. Not only does it show every classroom, every hallway, and every corner of the castle, but it also shows every inch of the grounds, as well as all the secret passages that are hidden within its walls and the location of every person in the grounds, portrayed by a dot.
Grab all the jewels you can and eliminate the alien threat.
Make some snowballs and whack innocent passers-by in humbug fashion.
Avoid the jelly fish and swim as far as you can.