Online slot games use software-based random number generators to emulate the randomness of actual physical slot machines. This ensures that every virtual spin is fair and the outcome reflects the odds of hitting certain symbols. This is why casinos can always make a profit over the long run, even though some players will win more and some will lose more. Despite this, there are many misconceptions about how slots and their RNGs work. These myths include that the math behind slots will take advantage of autoplay spins, that the game is not fair, or that the RNG will reward a player with fewer wins if they play the same slots over and over again.
The basic principles of slot games are fairly simple. Players spin the reels and aim to match up three of the same symbols in a row. The more matching icons you get, the bigger the payout will be. Different slots have different symbols, bonuses and paylines. Some have progressive jackpots where the top prize keeps growing with each bet until it is hit.
Most online slots are developed by casino software providers. Most casinos offer a selection of slots by these developers and you can often filter the collection to view just those games by one developer. This is a useful feature if you like to try out different developers and find your favourites. You can also find branded slots, which are based on popular movies, tv shows and other pop culture phenomena, through licensing agreements between software providers and brands.