Slot machine - with random line multiplier

• US 6,419,579 B1
• Filed: 10/29/1998
• Issued: 07/16/2002
• Est. Priority Date: 10/29/1997
• Status: Expired due to Term

• Current Assignee: Aristocrat Technologies Australia PTY Limited (Aristocrat Leisure Limited)
• Original Assignee: Aristocrat Technologies Australia PTY Limited (Aristocrat Leisure Limited)
• Inventors: Bennett, Nicholas Luke
• Primary Examiner(s): Martin-Wallace, Valencia
• Assistant Examiner(s): White, Carmen D.
• Application Number:
  US09/181,726
• Publication Number:
  US 20020082074A1
• Time in Patent Office: 1,356 Days
• Field of Search: 273/143.R, 463/16, 463/20-22
• US Class Current: 463/20
• CPC Class Codes: G07F 17/3244 Payment aspects of a gaming system, e.g. payment schemes, setting payout ratio, bonus or consolation prizes
• CPC Class Codes: G07F 17/34 depending on the stopping of moving members in a mechanical slot machine, e.g. "fruit" machines

Abstract

A slot machine, of the type having a video display screen which displays a plurality of rotatable reels carrying symbols, is arranged to pay a prize on the occurrence of a predetermined symbol or combination of symbols. The game includes a special feature which is invoked when a special triggering combination of symbols occurs. Once the special feature is triggered a wild symbol moves around the screen progressively replacing each symbol in the display with a die symbol and the prize generated is multiplied by the value shown on the die.

Claims

1. A gaming machine including a display means and game control means arranged to control images displayed on the display means, the game control means arranged to play a game wherein within a single play of the game, a plurality of symbols are randomly selected and displayed on the display means and, if a winning combination results, the machine awards a prize, the game being characterized in that upon the occurrence of a predetermined triggering event within said single play of the game, one or more icons comprising a wild card symbol is displayed in substitution for a respective number of the displayed randomly selected symbols, the wild card symbol further comprising, one or more prize multiplier display icons, indicating a value of a randomly selected integer value within a predetermined range and the one or more icons comprising a wild card symbol form combinations with a remainder of the displayed randomly selected symbols and if a combination formed with an icon comprising a wild card symbol is a prize winning combination a prize is awarded for the prize-winning combination equal to a predetermined prize for the prize-winning combination multiplied by the randomly selected integer value and, wherein within the single play of the game the wild card symbol moves sequentially among one or more of the randomly selected symbols while displaying its prize-determining functions.

2. The gaming machine as claimed in claim 1 wherein the wild card symbol is a representation of one or more dice.

3. The gaming machine of claim 2 wherein the symbol moves by an animated rolling motion.

4. The gaming machine of claim 3, wherein the predetermined range of the integer value is from 1 to 6n where n is a number of the dice in the wild card symbol.

5. The gaming machine of claim 4 wherein the number of dice (n) is a fixed predetermined number.

6. The gaming machine of claim 4 wherein the number of dice (n) is variable and is randomly selected when the wild card symbol is displayed.

7. The gaming machine as claimed in claim 6, wherein the wildcard symbol is displayed in a first location and then progressively moved to each of a predetermined number of other display locations, a prize being awarded for winning combinations formed with the wild card symbol for each location in which the wild card symbol is displayed.

8. The gaming machine of as claimed in claim 1, wherein the display means comprises a video display simulating a set of rotatable reels, each carrying a plurality of symbols.

9. The gaming machine as claimed in claim 1, wherein the display means is a video display arranged to display a hand of cards, the cards of the hand being selected from a standard 52 or 53 card deck or a subset or multiple of such a deck.

10. The gaming machine as claimed in claim 1, wherein the triggering event is the occurrence of a special symbol or a combination of special symbols displayed in a particular arrangement.

11. The gaming machine of claim 10 wherein the triggering event is the occurrence of a first symbol, appearing in one column of the display and a second symbol appearing in another column of the display.

12. The gaming machine as claimed in claim 1, wherein the wild card symbol is first displayed at a location at one end of the display and is progressively moved from location to adjacent location until it has been displayed in each and every location of the display.

13. The gaming machine of claim 1 wherein the one or more prize multiplier display icons further comprise animated icons that display the prize multiplier value at the end of an animated sequence of movements.

14. The gaming machine of claim 13, wherein the one or more prize multiplier display icons comprise images of tumbling dice.

15. The gaming machine of claim 13, wherein the one or more prize multiplier display icons comprise images of any animal.

16. The gaming machine of claim 13, wherein the one or more prize multiplier display icons comprise images of tumbleweed.

17. The gaming machine of claim 13, wherein the one or more prize multiplier display icons comprise images of fruits.