Slots are the most popular online casino games, with thousands of titles available for free play. These games use the same RNG (random number generator) technology that cabinet games do, but they take advantage of advances in software to create astonishing features that aren’t possible on cabinet machines.

You can find branded slots inspired by some of the most famous board and card games, movies, TV shows and comics, as well as newer titles that use the latest graphics and game mechanics to attract players. These include video slot games that offer multiple win-lines, a wide range of scatter symbols and even bonus rounds like picks bonuses or wheel spin bonuses.

One big difference between playing slots online and playing them offline is that there’s no risk of losing real money. Free games are great for killing time, but they’re also a fun way to practice strategies and learn the ropes before risking real cash. They can also help you decide whether or not slot gaming is for you.

While slots were once split into three-reel games that mimicked mechanical machines, and five-reel video slots, today’s online slot games are more diverse than ever before. Players can expect to see free spin bonuses, wild and scatter symbols and ever more complex hold and spin bonuses. Some of these features are designed to increase the chances of landing a winning combination, while others make the games more entertaining to play.

Several online casinos now focus on developing mobile games that work as well on smartphones and tablets as they do on desktop computers. Look out for mobile-friendly slots developed by NetEnt Touch, Play’n GO and Pocket Games Soft. They have adapted the menus, toolbars and graphics to fit smaller screens and work smoothly on both iOS and Android devices.

Some developers have even rethought the basic structure of slot games to introduce new ways to win. For example, Boldplay’s Warriors & Warlocks uses cartoonish graphics to take you into a fantasy world of sorcerers and monsters with two sets of reels. The game’s Megaline bonus lets you land more wins on each set, and scatters trigger the Beast Brawl feature that transforms the two sets into a single giant reel with up to 100x multipliers.

Some slot developers have even rethought the way in which you can trigger free spins. Instead of requiring you to land specific symbols on paylines, they’ve introduced collection bonuses where you have to collect a certain number of symbols before triggering the bonus round. This type of mechanism makes the games more addictive and is becoming a major trend in online slots. Examples of this include the new Moon Princess slot and the recently released Jammin Jars from NetEnt. This kind of innovation is an important sign that slots games are continuing to evolve and adapt as new technologies become available.