| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To prevent the duration of a time shortening period from being shortened extremely if a fluctuation time period of special patterns is short or if the frequency of continuation is small during the time shortening period. <P>SOLUTION: A pachinko game machine 10 has a special game performing means 148 for performing a first special game and a second special game. The first special game is performed if the special patterns stop by forming prescribed patterns. The second special game is performed when a game ball enters an ordinary electric device hole 26. If prescribed specific game start conditions are established, a specific game performing means 162 performs a specific game advantageous for a player. At this time, a duration deciding means 164 decides duration of the specific game. A fluctuation time period selection means 168 selects duration of the special patterns during the specific game by referring to a fluctuation time period judging table. A continuation frequency deciding means 166 decides the frequency of possible fluctuations of the special patterns during the specific game as the frequency of continuation based on the duration and the fluctuation time period. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
