Online Slot is a casino game where you spin reels filled with symbols. The symbols are randomly dropped by a random number generator (RNG). You win money by lining up matching symbols on paylines that run horizontally across the reels, though some slots have vertical and diagonal lines too. The paylines vary from game to game, as do coin sizes and maximum bet amounts. Some slots also have a prize wheel that awards free spins, multipliers or jackpot cash sums.

Many real money online slots have Wild symbols that can substitute for other symbols on the reels to form winning combinations. These can also serve as special multipliers to payout double or triple the value of your original bet. They may also trigger bonus games. Scatter symbols are also popular in online slots, providing modest payouts when two or more appear anywhere on the screen, even if they aren’t on a winning payline.

Branded online slots are based on movies, TV shows, celebrities, rock bands and other popular topics. They are developed through licensing agreements and can be played for either fun or real money. They are often expensive to play, however, as software providers must pay copyright fees to the brands they feature.

Knowledgeable players check the RTP (return to player) rate of an online slot before playing it for money. This figure is an estimate of how much you can expect to win per spin, and it will vary wildly depending on the game’s theme, features, graphics and design. Some players also consider the game’s volatility – high variance games offer larger payouts less frequently, while low volatility games provide smaller wins more regularly.