Book of Potions is almost identical to Book of Spells in terms of gameplay; the PlayStation Eye renders the book and its effects while the PlayStation Move controller acts as a wand, as well as other instruments, such as a knife for chopping ingredients and a spoon for stirring the contents of a cauldron. Like its predecessor, the game begins with the player choosing one of the four Hogwarts houses and one of three wands. (wikipedia.org)