When you play slot online, you place bets on a series of vertical reels that are filled with symbols. These spin and randomly come to a stop thanks to a random number generator (RNG) that’s audited regularly to ensure fairness. You win money by lining up matching symbols on paylines that run horizontally across the reels, though some slots also feature vertical and diagonal paylines. The earlier online slots required you to select a coin size and a number of paylines to determine your total bet, while newer games let you choose how many ways to win you want to activate.

Online slots can vary widely in terms of paylines, reels and features, with different kinds of themes and bonuses offered. For instance, branded slot machines often use graphics that convey popular culture and entertainment icons. These are typically developed through licensing agreements with brands like sports stars, hit TV shows and rock bands.

There are also games with progressive jackpots that grow every time a player places a bet. These can result in six-figure or even seven-figure payouts if you are lucky enough to trigger the winning combination. Most online slots also feature bonus rounds that can take the form of free spins, pick and click games, re-spins, sticky wilds or random prizes. These can help you increase your bankroll while having fun playing the game.