Gaming device with prize symbols

A method of controlling a user interface of an electronic gaming device, the method comprising, for a game instance:

• configuring multiple reel strips, the multiple reel strips including a bonus reel strip and one or more configurable reel strips, including:
• configuring the bonus reel strip so that a designated symbol is assigned to each of multiple reel strip positions of the bonus reel strip;
• determining a number of configurable reel strips;
• and
• for each of one or more configurable reel strips, among the number of configurable reel strips and different than the bonus reel strip, configuring the configurable reel strip by iterative operations, the iterative operations including, for each of multiple dynamically configurable reel strip positions of the configurable reel strip:
• determining a value from a random number generator (“RNG”);
• selecting a prize symbol, from a set of prize symbols, based on the value from the RNG and a weighted table in which each of the prize symbols is associated with a probability of that prize symbol being selected, the set of prize symbols including a first prize symbol and a second prize symbol;
• and
• assigning the selected prize symbol to the reel strip position of the configurable reel strip;
• selecting multiple symbols from each of the multiple reel strips;
• generating data for displaying the selected symbols of each of the multiple reel strips in a corresponding column of symbol positions;
• and
• evaluating the selected symbols for winning combinations that include the designated symbol and any of the set of prize symbols, wherein a first prize is awarded if the selected symbols include a winning combination for the first prize, the winning combination for the first prize including the designated symbol and the first prize symbol, and wherein a second prize is awarded if the selected symbols include a winning combination for the second prize, the winning combination for the second prize including the designated symbol and the second prize symbol.

Computer-readable memory having stored thereon computer-executable instructions for causing one or more processors, when programmed thereby, to perform operations to control a user interface of an electronic gaming device, the operations comprising:

• setting a value of a first prize at an initial value;
• setting a value of a second prize at the initial value, the initial value being the same for the first prize and the second prize;
• causing the value of the first prize and the value of the second prize to be displayed;
• and
• for each of multiple wagers in response to player selections:
• incrementing the value of the first prize and the value of the second prize at a same rate based on the wager, the value of the first prize and the value of the second prize being incremented at the same rate based on successive wagers;
• causing the incremented values to be displayed, thereby facilitating a pendulum effect between awarding the first prize and awarding the second prize;
• selecting, based at least in part on values from a random number generator (“RNG”), a plurality of symbols from each of a plurality of reel strips;
• causing the selected symbols of each of the plurality of reel strips to be displayed in a corresponding column of symbol positions;
• evaluating the selected symbols for any winning combinations, including determining whether the selected symbols include a winning combination for the first prize and determining whether the selected symbols include a winning combination for the second prize;
• if the selected symbols include the winning combination for the first prize, awarding the first prize and resetting the value of the first prize to the initial value;
• and
• if the selected symbols include the winning combination for the second prize, awarding the second prize and resetting the value of the second prize to the initial value.