From the simple pull-to-play mechanical versions to the high-tech, dazzlingly large video screens and quirky themes found in casinos today, slot machines are everywhere. And while the allure of bright lights and fast action can be hard to resist, it’s important to choose the right machine to play. If you’re looking to walk away with more than you came with, stick to a single type of machine and learn the ropes.

While the basics of a slot machine are relatively simple (simply line up identical symbols in a row to win), machines vary by their pay lines, bonus features and jackpot sizes. For example, some machines have Wilds that can substitute for other symbols to complete winning combinations while others have progressive jackpots that increase the more coins you bet.

The number of wins in a slot is based on the probability that a particular symbol will appear on a particular reel, which is determined by a random number generator (RNG) that makes a thousand calculations per second. The RNG is the brain behind all electronic slot games, and it’s what determines whether or not you win.

While you’re playing, be sure to bet the maximum amount to activate all pay lines and maximize your chances of hitting a jackpot or activating a bonus game. Also, it’s a good idea to be at the casino before peak gaming hours, as crowds can make it difficult to find a seat and keep your focus on the slots.