Feature symbol frame mechanic for random based game outcomes

A non-transitory computer-readable medium, readable by at least one processor and comprising instructions stored thereon to cause the at least one processor to:

• determine that a random-based game outcome based on a random number generator in a game instance of a base game triggers a supplemental game feature, wherein the random-based game outcome includes a plurality of target feature symbols from a first set of one or more target feature symbols;
• cause, as part of the supplemental game feature, a plurality of feature symbol frames to be generated for symbol window positions having the target feature symbols from the first set of one or more target feature symbols, wherein the target feature symbols from the first set of one or more target feature symbols trigger generation of the feature symbol frames and each feature symbol frame is associated with a corresponding multiplier value;
• generate, based on the random number generator, a random-based feature game outcome in a game instance of the supplemental game feature;
• increase the corresponding multiplier value for each feature symbol frame associated with a symbol window position in which the random-based feature game outcome causes a target feature symbol from a second set of one or more target feature symbols to be displayed;
• and
• cause a payout to be awarded when a credit symbol is displayed in a symbol window position associated with one of the feature symbol frames as part of the random-based feature game outcome, wherein the payout is based on an amount associated with the credit symbol and the multiplier value associated with the feature symbol frame associated with the symbol window position in which the credit symbol is displayed.