Nintendo has launched a playable demo of the Nintendo 3DS exclusive game Kirby: Battle Royale. It includes three (out of ten) game modes in which you compete against others in arena battles filled with mini-games. To encourage people to try it out, Nintendo has sweetened the deal by providing all those who try the demo with Meta Knight unlocked in the full version when it releases on November 3 (something that's normally achieved by beating the campaign). Will you download and try the Kirby: Battle Royale demo?