Call means placing a bet equaling the current highest bet. Raise means placing a bet equal the highest bet, plus more to get the highest bet. When the player places a bet which is higher than the highest bet it is called raising. If nobody has made a bet before you, you can stay in the game without calling or raising. It is called checking. If you think that you will hardly win you can fold. In this case you lose your bet and any chance of winning. Online Poker Game Software.