07258611 is referenced by 148 patents and cites 112 patents.

The present invention includes an apparatus and method for a bonus game, and particularly a free spin bonus with an incrementing multiplier. The bonus game includes a plurality of reels having a plurality of symbols and multipliers. The gaming device provides a number of free spins to the player at the beginning of the bonus game. The multiplier preferably starts at “1×” and increases by one after each free spin. Initially, the player spins the reels attempting to obtain a winning symbol combination on the reels. If the player obtains a winning combination, the gaming device provides an award. The award is multiplied by the multiplier and the player receives the multiplied award for that free spin. The player continues to spin the reels until there are no free spins remaining in the bonus game.

Title
Gaming device having free game bonus with a changing multiplier
Application Number
10/86146
Publication Number
7258611 (B2)
Application Date
February 28, 2002
Publication Date
August 21, 2007
Inventor
Anthony J Baerlocher
Reno
NV, US
Paulina Glavich
Reno
NV, US
James A Vasquez
Carson City
NV, US
Robert F Bigelow Jr
Reno
NV, US
Agent
Bell Boyd & Lloyd
Assignee
IGT
NV, US
IPC
A63F 13/99
A63F 13/00
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