The basic mechanics are spinning reels with symbols on them, and the objective is to align matching symbols across paylines in order to win. Three to ficolour prediction onlineve reels & a variable number of paylines—which can range from one to hundreds—are common features of online slots. The routes across the reels where winning combinations can appear are known as paylines. Prior to the reels spinning, players can change the amount they bet & the number of active paylines.