A gaming device randomly selects one of the symbols or cards displayed in the final state of a game to be a wild symbol or card. The game can be any game where one symbol may be able to substitute for any other symbol to increase the chance of obtaining a winning combination or a better winning combination....http://www.google.de/patents/US20040053676?utm_source=gb-gplus-sharePatent US20040053676 - Gaming device having a varied wild symbol in a bonus game
