To provide a Pachinko game machine which appropriately performs the time shortening control of a pattern varying operation by judging the case of stable winnings and the case of not being so.

When the number of holding balls is less than 3, variation time determined corresponding to the number of holding balls is set as the next variation time. On the other hand, in the case that a start winning is attained when the number of holding balls is 3 and the number of holding balls reaches an upper limit number (=4), the variation time of the pattern varying operation to be performed by a liquid crystal display part 11 next is selected from a variation time group composed of three kinds of the variation time T4, T5 and T6 of different lengths and set in a variation time memory 52b. Which one of the variation time T4, T5 and T6 is to be set corresponds to the variation time of the pattern varying operation under execution at present.