Although the themes, features, & bonuses in these games vary widely to improve the gaming experience, they are based on the classic slot machines found in physical casinos. Online slotcluster slots machine games' basic idea is to spin the reels and match symbols to win prizes. The lines on which winning combinations can be formed are known as paylines, and the majority of slot games have multiple paylines. In order to control their risk and possible rewards, players can usually change the amount of money they bet and the number of paylines they wish to play.