The variety of online slot games is huge. You can play anything from simple three-reel slots to five-reel video machines. They all work based on a random number generator (RNG), which produces a unique sequence of numbers for each spin. The results are compared to the symbols on the reels to determine whether or not you have won.

There are a few different companies that create online slot games. Some of the bigger ones include IGT and Microgaming, which are responsible for some of the most popular games in the industry. They offer a wide range of themes, from classic movies and television shows to fantasy worlds and motorcycles. Some even offer bonus rounds that can help you win even more money.

A lot of people have a myth that they can only win in a slot game by hitting specific combinations on a payline. While this may have been true in the past, most modern slots allow you to wager on multiple pay lines at once. This can increase your chances of winning, but it also increases the cost of a spin.

Most online slot games also come with a variety of special features. These can include extra wild symbols, scatters, and mini-games that can unlock free spins or jackpots. There are also some that feature a multiplier, which can multiply your wins by a certain amount during the slot’s duration. These features can be a great way to try out new slots before you invest any real money.