To provide a new card game device which has two playing displays on a game sheet and with which one game can be played with one display and two different games can be played with the two displays.

The card game device 10 has game sheet 11 on which a first playing display 21 and a second playing display 31 are formed, and two or more cards 13. The first playing display 21 has an explaining area 22 which explains the game procedure, a power displaying area 23 on which a card is placed and the power is displayed, and a battle area 25 on which a card is placed and a battle is performed. The cards 13 has a display part 14 on which columns 31a-31i of the second playing display 31 are displayed, and a formation placing figure 15 which is formed by placing the card 13 on the second playing display 31.