Best Online Slots for 2021

Best Casinos for Real Money Online Slots

Check out how our expert team find the top online slots casinos in USA.

Best Real Money & Free Slots in USA

Online Slot Game Types

Top Progressive Slots & Jackpots

Top Online Slots Tips for Winning

By playing free online slots, you’re able to try out as many different types of games as you like before you feel comfortable enough to wager real money.

All top gambling sites will have a welcome offer that includes a match deposit bonus, and even free spins. Make sure to activate these when signing up.

The higher the RTP (Return to Player), the better your odds are to win real money when playing slots. Any slot payout percentage above 96% is great.

Look out for online slot games with a large number of payables and bonus rounds. These extra features should increase your chances of winning.

Never exceed your financial limits when betting. It is best to set yourself an amount you can afford to lose, then never bet more than that total.

Types of Slots Bonuses

There are multiple forms of online casinos bonuses, and the below are specific for slots games:

Our Slots Game Reviews

Slots Game Makers

How we Review Slots Casino Sites

Our team of experts continuously test online casinos in USA, to find the best ones most suited to playing slots for real money. The main criteria we look out for are:


Online slots at casino sites are totally random and have no memory as they use RNGs (Random Number Generators). So, you are assured of a safe and secure gambling experience.

Yes, as long as you play slots at a reputable online casino. You can check out our recommended slot gambling sites further up on this page. reputable online casinos

These online casinos will be certified by gambling regulators such as eCOGRA and iTech Labs, and licensed by local governments including Malta, UK and Gibraltar.

Our experts have found that the following online casinos, offering great bonus offers and a wide variety of games, are best suited for playing slots:

Simply sign up to one of our recommended slots casino sites , found further up on this page, and enter your payment details for depositing and withdrawing any real money.

Make sure to take advantage of any welcome bonuses and free spins, where you have the chance to win cash for nothing.

Yes, you can play slot games for free further up on this page. Most top gambling sites also offer a free demo version of their games, but sometimes you won’t be able to access them until you sign up.

Slot games with progressive jackpots are usually unavailable to play for free, while others may require Flash Player.

Check out our dedicated free casino games page, where you can choose from over 7000 titles to play for free instantly. You don’t even need to download any software or sign up to an online casino.

Progressive jackpot slots are special games that feature an extra prize, sometimes worth millions of dollars.

The game takes a little bit from every player’s bets, and puts it towards the ever-increasing pot prize. The jackpot gets bigger and bigger until someone wins it, and then it resets.

One lucky player actually won CA$5.9million through our site. We referred them to Jackpot City casino, where they claimed the life-changing prize while playing Mega Moolah.

The most profitable slots games will have an RTP% of over 96%, including the below:

Generally, progressive jackpot slots have the highest payouts, depending on their prize at the time. These include Mega Moolah, Quick Hit and Gladiator, which are some of the most popular in USA.

Other video slot games that have a Return to Player (RTP) of over 96% are also well worth trying, as you have a better chance of winning.

No, as long as you play at a reputable online casino, slot games are run by a Random Number Generator (RNG).

That means that payouts are totally random, so there is little-to-no skill involved in playing slots.

Absolutely. Sometimes you can get the best slots experience by playing on mobile, as you can do so on the go and with ease. You can play mobile slots for free or real money.

Most casino sites allow you to play real money slots through an app. They will also have a mobile version of the site.

All top online casinos will continuously add new slots to their catalogue for you to enjoy for real money.

You can also play for free, both at these casino sites or on our free casino games page.

If you are looking to win big, then first make sure you are playing a progressive slot game such as Mega Moolah.

As the jackpot is ever increasing until someone wins, the best time to play is to wait until prize total is in the hundreds of thousands or even millions.

There is no difference in what time you play regular slots.