06251013 is referenced by 585 patents and cites 5 patents.

A gaming machine having a display and game control, the game control being arranged to play a game wherein a plurality of symbols are randomly selected from a predetermined set of symbols and displayed in rows on the display and if a winning combination of symbols results, the machine pays a prize. In a first aspect, a triggering event invokes a game feature in which a sprite randomly designates one or more of the symbols displayed on the display to be treated as special symbols for that particular game and a prize is awarded for any winning combinations formed with one or more of the special symbols. Embodiments of the special symbol include a wild card symbol and a scatter symbol. In a second aspect, the sprite designates the win meter or the credit meter, causing the amounts shown on the win meter and credit meter to increase.

Title
Slot machine game with randomly designated special symbols
Application Number
9/259907
Publication Number
6251013 (B1)
Application Date
February 26, 1999
Publication Date
June 26, 2001
Inventor
Nicholas Luke Bennett
Manly Valve
US
Agent
Rosenman & Colin
US
Assignee
Aristocrat Technologies Australia
US
IPC
G06F 17/34
View Original Source