Simplify the following text for a Grade 3 native English-speaking person.
Original: The Wii Balance Board ( called Wii Board in Europe ) is a balance board accessory made for Nintendo 's Wii game console . It was first used for Wii Fit , and is being used for other games including Wii Ski .
Simplified: Wii Fit was the first game to make use of the Wii Balance Board .