| US 7,481,708 B2 | ||
| Gaming device having a free spin game | ||
| Anthony J. Baerlocher, Reno, Nev. (US); Karen Michelle Cregan, Reno, Nev. (US); Michael MacVittie, Las Vegas, Nev. (US); and Ryan W. Cuddy, Reno, Nev. (US) | ||
| Assigned to IGT, Reno, Nev. (US) | ||
| Filed on Jul. 25, 2006, as Appl. No. 11/459,872. | ||
| Application 11/459872 is a division of application No. 10/953812, filed on Sep. 29, 2004, granted, now 7,094,148. | ||
| Application 10/953812 is a continuation in part of application No. 10/661443, filed on Sep. 12, 2003, granted, now 7,074,127. | ||
| Application 10/661443 is a continuation in part of application No. 10/241255, filed on Sep. 11, 2002, granted, now 7,056,213. | ||
| Prior Publication US 2007/0010316 A1, Jan. 11, 2007 | ||
| This patent is subject to a terminal disclaimer. | ||
| Int. Cl. A63F 9/24 (2006.01) | ||
| U.S. Cl. 463—20 [463/16] | 38 Claims |
| 1. A gaming device controlled by a processor, said gaming device comprising:
a primary game controlled by the processor and operable upon a wager by a player; and
a free spin mode controlled by the processor and that is initiated if a triggering event occurs in a play of the primary game,
wherein said free spin mode includes
a number of free spins of a plurality of reels without an additional wager by the player, wherein said number is undetermined
until a free spin mode terminating event is triggered, said reels including a plurality of symbols, said plurality of symbols
including at least one locking symbol and at least one designated symbol, wherein for each free spin, an award is provided
to the player for any winning symbol combinations which occur in said free spin,
wherein said free spin mode terminating event is triggered if at least one of the locking symbols is generated on at least
one reel in a first group of said reels and at least one of the designated symbols is generated in a second different group
of said reels, wherein in the free spin mode terminating event the player is provided with a predetermined number of additional
free spins prior to termination of the free spin mode, said predetermined number being at least one, and wherein at least
one locking symbol is held stationary for each said additional free spin.
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