Players can change their bet size based on their preferences and budget after choosing a game. A variety of betting options are available on most slots, allowing players to select the amount they wish to bet on free play online slotseach spin. After placing their bet, players only need to press the spin button to see the reels come to life. The goal is to land matching symbols on all of the paylines; depending on the game's rules, this can result in different payouts. Extra Benefits & Features. The gameplay of many slots is further enhanced by the presence of special symbols like wilds and scatters, which can initiate bonus rounds or free spins.