06203429 is referenced by 718 patents and cites 34 patents.

A gaming machine is operated by a programmed micro-processor in which the first mode of operation, a basic gambling game, is implemented such as video poker or reel-type slot machine play. If bonus symbols are selected in the basic mode, a bonus mode is triggered. In the bonus mode the same or a different game is implemented by the micro-processor system employing a variable probability trial procedure in which the player continues to play and receive awards until a losing combination occurs. The hit rate for the bonus mode is often significantly greater than 50% although the overall hold percentage of the game remains below 100%.

Title
Gaming machine with bonus mode
Application Number
9/140947
Publication Number
6203429 (B1)
Application Date
August 27, 1998
Publication Date
March 20, 2001
Inventor
Scott Slomiany
Chicago
IL, US
William A Grupp
Chicago
IL, US
Erica Frohm
Chicago
IL, US
Lawrence E Demar
Chicago
IL, US
Agent
Piper Marbury Rudnick & Wolfe
US
Assignee
WMS Gaming
IL, US
IPC
G07F 17/34
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