06190255 is referenced by 818 patents and cites 74 patents.

A bonus game for a slot machine operable in a basic mode and a bonus mode. The bonus game is entered upon the occurrence of a special start-bonus game outcome in the basic mode. In the bonus game, a player selects, one at a time, from an array of windows each associated with a bonus game outcome. Credits are awarded based upon which ones of the windows are selected. The bonus game ends upon selection of a window associated with an end-bonus outcome but otherwise continues, allowing the player to make further selections and accumulate further credits until encountering an end-bonus outcome. In one embodiment, a bonus game resource obtained in the basic game may be exercised in the bonus game to affect the bonus game outcome. In one embodiment, for example, where the occurrence of an end-bonus outcome would otherwise end the bonus game, a player having a bonus game resource may exercise the bonus game resource upon encountering an end-bonus outcome to continue playing the bonus game.

Title
Bonus game for a gaming machine
Application Number
9/127377
Publication Number
6190255 (B1)
Application Date
July 31, 1998
Publication Date
February 20, 2001
Inventor
Roger A Delott
Chicago
IL, US
Robert J Wilson Jr
Buffalo Grove
IL, US
Benjamin T Gomez
Chicago
IL, US
Alfred Thomas
Chicago
IL, US
Agent
Jenkens & Gilchrist
US
Assignee
WMS Gaming
IL, US
IPC
B21D 51/46
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