Slot online is a casino game where players win money by lining up matching symbols on paylines, which run horizontally across the reels. They can also win by activating bonus features that can reward them with free spins, prize multipliers or extra Wild symbols. Unlike table games, slots can be played from any device and there is a vast array of styles, themes, layouts and bonuses to choose from.

In a traditional slot machine, the player inserts cash or, in ticket-in, ticket-out machines, a paper ticket with a barcode into a designated slot on the machine. The machine then selects a random number, which corresponds to an outcome on the reels. When the player presses ‘spin’, the machine then activates the reels and rearranges the symbols. If the symbols match a winning combination on the paytable, the player earns credits based on the payout schedule. Most slot games have a theme, which is reflected in the reels and symbols used in the game.

The best online slot sites offer a wide range of games from industry giants like NetEnt and IGT and smaller, boutique suppliers. They include Megaways and instant wins games as well as traditional 3-reel, 5-reel and 9-reel slots. They also feature low, medium and high volatility games. Some are optimised for mobile devices, while others can be played on desktop computers. The best sites also provide support for KYC verification and accept deposits from major credit cards, e-wallets and bank accounts.