GAME MACHINE

PROBLEM TO BE SOLVED: To provide a game machine allowing a player's intention to intervene with respect to determination of a period when to receive a shift lottery for causing a shift to a game state advantageous to a player, and pleasing the player more.SOLUTION: A game machine 10 includes a normal game and a special game higher in possibility of profit impartment than the normal game. There are provided: cycle shift determining means 270 which can repeatedly determine whether or not to cause a shift to the special game every time a prescribed game number period (cycle period) during the normal game; and period selection means 280 capable of selecting one of a plurality of cycle periods where prescribed game numbers differ according to operation as a cycle period. In accordance with a cycle period selected by the cycle selection means 280, it is possible to change a profit amount that can be imparted to the player during the special game.SELECTED DRAWING: Figure 6 【課題】遊技者にとって有利な遊技状態に移行するための移行抽選を受ける時期の決定について遊技者の意思を介在させることができ、より遊技者を楽しませることができる遊技機を提供する。【解決手段】通常遊技と、通常遊技よりも利益付与の可能性が高い特別遊技とを備えた遊技機10であって、通常遊技中に所定の遊技数の期間（周期期間）の到達毎に、特別遊技に移行するか否かを移行抽選により繰り返し決定可能な周期移行決定手段270と、周期期間として、操作により所定の遊技数が異なる複数の周期期間の中からいずれか１つを選択可能な周期選択手段280とを備え、周期選択手段280により選択した周期期間に応じて特別遊技中に遊技者へ付与可能な利益量を変更可能としたことを特徴とする。【選択図】図６