The Most Popular Online Slots of 2021

Some slots hit the sweet spot for the masses and they soar in popularity - we bet a few have already come to mind! We love a good reminder of the most popular online slots, both old and new. Let's check them out...

Top-Ranking Popular Slot Casinos

On this page you'll learn:
  • Why certain slots become so popular
  • The most popular titles to play today
  • How to pick the best slot for your tastes

Slots players have many different reasons for gravitating towards certain online slots, but most of the best online slots have one or more of the following qualities:

Progressive jackpots - even if you play slots for fun you still dream of winning a massive multi-million dollar jackpot, don’t you? The most popular online slots tend to be progressive jackpot games that offer the chance of life-changing money.

Modern graphics - slots are no longer clunky old machines of bars, bells, and cherries, but ultra-modern experiences that can look more like a blockbuster video game than a one-armed bandit. The best slots have the best graphics and gameplay.

Reliable payout structure - most online slots have similar RTP (Return to Player) percentages, but some are high volatility (infrequent but high payouts) and others are low volatility (frequent, smaller prizes). Many players prefer one or the other or land in the middle, but consistency is key.

Our top recommended online casinos all host some of the world’s most popular real money online slots, including:

Mega Moolah - the slot on everyone's lips. Mega Moolah's infamous reputation is well-deserved thanks to an incredible progressive jackpot that could be won at any moment.

Break da Bank Again - try your hand at cracking the bank vault in this immersive online slot and you'll find yourself cashing a whopping 375,000 coin jackpot.

Starburst - perhaps NetEnt's most famous title, Starburst offers beautiful visuals as well as addictive gameplay.

Avalon - one of Microgaming's most popular slots and it's easy to see why - with a fun bonus game and a great jackpot you can't go wrong!

Age of Discovery - a brilliant slot that offers impressive graphics and animations that will take you on a high seas adventure whilst you try to bag the massive jackpot.

Some of the most popular online slots themes include:

  • Irish - the luck of the Irish is famous, and these games give you a chance to find a pot of gold at the end of a rainbow!
  • Ancient Egypt - the riches and wealth of this mighty empire are legendary, and you can unearth a Pharaoh’s share of online slots prizes!
  • Films, comics, and TV - people love slots themed around their favorite television shows, movies, and fictional characters.
  • Fantasy and fairytales - escape from reality with some fanciful and fantastic games based on your favorite childhood stories.

Choosing the Ideal Slot for You

Whether or not you think a popular online slot is worth the hype is up to you. Every online slots player is different and likes different things. We’ve reviewed the best online slots at the top online casinos to make sure you get the most bang for your buck. If you know what you like, you don’t have to worry about trawling through thousands of games at dozens of casinos – check out our reviews and find the game that suits you.

Be Aware! Rogue Casinos

Casinos listed in this section have not passed our meticulous inspections and should be avoided at all costs. We check all of the essential details, including legitimacy, licensing, security, software, payout speed, and customer support.

Offenses Reported
Unresponsive customer service
Issues processing withdrawals
Almost impossible to win
False advertising of bonuses
Offenses Reported
Games seem to be rigged
Slow communication
Numerous hidden charges
General shady practices
Offenses Reported
Constant technical issues
Insufficient banking options
History of slow payouts
Not many games on offer