Online slots work in the same way as land-based slot machines – you place your bet and then spin the reels. If you hit a winning combination, you receive a payout. The main difference is that you can play them from any computer or mobile device. Slots also use RNGs to ensure that they are fair and cannot be tampered with by players or casinos.

A slot machine has a reels with rows of symbols and paylines. The number of symbols varies between machines, but the basic rules are the same: The reels spin after you place your bet and then stop to display random combinations of symbols. If you have a winning combination, the game will pay out and you can withdraw your funds.

Slot games can be themed on any topic and can feature traditional fruit symbols, playing cards or even fictional characters. They can also include features like free spins and bonus rounds. Depending on the game, it can also have a progressive jackpot or a random jackpot, which will increase with every bet made.

Some people believe that online slot games are unfair because they have different paytables than those found in their physical counterparts. This is false. The same mathematical module is used to calculate the results of each spin, and a casino’s online slot software will determine what symbols appear on the reels. The only factor that can affect your chances of hitting a jackpot is your own luck, and the best way to test this is by using the game’s demo mode.