Wii U is the ultimate party machine. While party games may have a bad name thanks to titles such as Carnival Games and Game Party, as any Mario Kart fan will tell you there's nothing better than having four players crowded around the telly for some multiplayer racing fun. Now, with the GamePad, you can add an extra player to the mix! But what will be the best Wii U multiplayer games? It's hard to say until we've played big blockbusters online but, from what we've played and seen so far, these are the games that promise to make the best use of the GamePad.