Online slots are games that use spinning reels to award wins based on the pattern of symbols. They can be played on a computer, mobile phone or tablet. These games can have a variety of themes and bonus features. However, the basic concept of a slot is the same across all games. Players insert cash or a paper ticket with a barcode into the machine and activate the reels by pressing a lever or button (either physical or virtual). The symbols that land in a winning combination earn credits based on the paytable.
Using microprocessors, developers can calculate the probability of a symbol appearing on each reel. This helps them create a return to player percentage figure for each game, which is a good indicator of how likely it is that you’ll win. The calculation involves running millions of spins, and the results can be complex. For example, a high hit rate might make it appear as though a particular slot is due a big win, while a volatile one can decimate your bankroll before awarding a jackpot.
Some online slots offer special symbols known as wilds that can substitute for other symbols to complete a winning line. These are a great way to spice up a slot and increase your chances of a win. Many slot games also feature a multiplier, which can double your winnings, and bonus rounds that award large prizes. However, it’s important to manage your bankroll correctly and not bet more than you can afford to lose.