A card game includes a plurality of playing cards each having a front face provided with a marking module. The marking module of each of the playing cards includes a symbol, a character and a letter. Thus, the card game can be used to play standard card games by provision of the symbols and the characters of the marking modules on the playing cards and can also be used to play a spelling or word-building game by provision of the letters of the marking modules on the playing cards so that the card game can satisfy the requirements of different players, thereby enhancing the amusement effect of the card game.