| 摘要 |
A slot machine according to the present invention includes a display device having a symbol display region for displaying plural types of symbols; a memory for storing image data concerning the plural types of symbols; and a processor for controlling the display device and the memory. The plural types of symbols contain a plurality of symbol groups. Each of the symbol groups is made up of a plurality of step-up symbols. Each of the step-up symbols expresses a different added-value. The processor is programmed to: (a) read the image data concerning the plural types of symbols from the memory; (b) execute a game by processing the image data, the game for rearranging the plural types of symbols in the symbol display region; (c) rearrange at least the one or more symbols, in the case where the two or more symbols are rearranged in the symbol display region, in a predetermined period of time delay after previous symbol arrangement; and (d) exercise control to set the symbol rearranged in the predetermined period of time delay to a step-up symbol expressing an added-value higher than that of the previously-rearranged symbol, in the case where these symbols belong to the same symbol group.
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