PURPOSE: To obtain a card game machine executing an operation for shuffling cards by the hands of a game player himself by providing a rewriting means for exchanging and rewriting card data stored in a data address corresponding to both address position data of a card data memory means.

CONSTITUTION: When a ball body 4 is rotated so as to shuffle cards on the desk, a rotary board 8 rotates, a signal is outputted from a photodetector 7, and a first exchange address position is rewritten successively by a first exchange address position rewriting means 41a. Since a second exchange address is rewritten successively under different conditions by a second exchange address position rewriting means 41b, first exchange address position data N1 and second exchange address position data N2 become different values in a usual case and varied successively within a range of the number of pieces N of cards to be used, respectively. Based on both first and second exchange address position data N1, N2, a card data rewriting means 42 exchanges card data stored in a card data memory means 40, therefore, the stored card data changes successively its array, and when the card data stored in the card data memory means 40 is used in order of the data address, the same result as cards are shuffled is obtained.