To prevent an excessive penalty from being given to a so-called irregular pressing.

When the operation order of a plurality of stop operating parts (reel stop buttons 24) is determined to be forbidden operation order, whether penalty giving conditions for giving a penalty to a player is established is monitored by a penalty giving condition monitoring means (a rendering control device 70) over a predetermined period (a deferment period), and when determining that the penalty giving conditions are established within the predetermined period, the penalty is given to the player by a penalty giving means (the rendering control device 70).