But at the core of the Wii's broad appeal lies a revolutionary motion-sensing wireless technology that forces the game. The Wii controller resembles a television remote. This feature was no accident as Wii designers correctly speculated that the familiarity of a TV remote would be more inviting than the more typical and complex video game controllers. The Wii's basic software also allows users to custom design avatars from a seemingly infinite combination of characteristics. With this configuration, users play tennis, go bowling, and hit the links by swinging the controller like a racket, ball, or golf club, all with characters resembling themselves.