Best Real Money Slots to Play Online in 2021 with Bonuses

Online slot games are the most popular form of gambling in the world right now, with thousands of options on the market for players to enjoy.

That's why - as experts in the industry - we've spent hours researching, playing, and learning all there is to know about online slots and how they function so we can give you the very best advice possible.

Fun themes, great bonus features, and exciting tournaments are just some of the reasons to give these popular games of chance a whirl. Here, we look at what you need to know in order to play like a pro, and to help you get started enjoying a wide range of slot games at top online casinos.

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The industry is packed with online slot games, some of which have been around for years and grown in popularity among players thanks to their big wins and high entertainment value.

These online casino slots are usually created by large software providers and focus on facilitating a fun playing experience from start to finish.

Popular slots also often have high RTPs with varying volatility to suit every pocket.

New slots, unlike popular slots, are exactly that - brand-new to the industry. It's always an adventure playing a new online slot as you could come across a bonus feature that wows or discover a new way to win that's never been done before.

Software providers are constantly trying to out-create each other in providing the most stimulating and entertaining experience possible.

New slots are filled with stunning graphics and soundtracks that keep you wanting more, and that take every spin to the next level.

Types of Online Slots

Let's have a look at the most common types of slot machine games you find at the best casinos online.

Free Online Slots

If you're not ready to play slots for real money when playing a new casino game, free online slots are perfect.

Found at many online casinos, free online slots are demo versions of the full games which allow you to play without making a deposit or placing a real-money bet of any kind.

You get to experience everything the slot has to offer -including the bonus features and winning potential - for free. It should also be noted that online casino slots don't pay out real cash.

Progressive Online Slots

Designed to grow the top prize after every bet that is placed, there are many different kinds of progressive online slots for you to enjoy, including local and network-wide games.

Depending on the game you choose, you could get the chance to win up to $1 million in an instant.

Designed with flashy graphics and bonus features that are sure to draw you in, progressive slots are perfect for new and experienced players looking for something more. Don't delay, discover which progressive online slot could be your new favorite!

Vegas Slots Online

Classic Vegas slots are still very popular today because they remind players of the good old days when they could enjoy physically spinning the reels in a land-based casino. And while not all Vegas slots are simple one-armed bandits, there are many classic options with particular playing styles still available. The bonus of Vegas slots online are that they offer the real-life gambling experience at any time and anywhere - all you need is access to a casino's desktop site or mobile app.

Highest Payout Online Slots

Slots with a high payout are those which provide the best chance of winning with each spin of the reels. This is generally based on the RTP (or Return to Player percentage) that the slot is designed with.

Software providers create slots with different RTPs based on a simple calculation that involves knowing how much a slot pays out, divided by the amount that is bet on the game. Understanding the RTP of a game is crucial to formulating any winning online slots strategy.

For instance, if a slot pays out $950 on every $1,000 that is bet (over the course of 1 million spins), the RTP is calculated to be 95%. The higher the RTP, the better your chances of landing a win - but it's not guaranteed.

The RTP is a theoretical number that is only affected by millions of spins. Even though this number doesn't play a huge role in whether or not you'll win, a low slot RTP means you stand even less chance to win over time.

Here are six of the best online casino slots with high Return to Player:

  • Mega Joker by NetEnt - 99% RTP
  • 1429 Uncharted Seas by Thunderkick - 98.5% RTP
  • Joker Strike by Quickspin - 98.11% RTP
  • BloodSuckers by NetEnt - 98% RTP
  • Bob The Epic Viking Quest by NetEnt - 98% RTP
  • Jokerizer by Yggdrasil - 98% RTP

Online Slot Games Providers

The industry may be full of casino game providers that provide attractive slots, but two that stand out from the rest is NetEnt and Microgaming.

Thanks to a long history of creating winning casino games and an unparalleled gaming experience, these providers are the best of the best.

NetEnt has created some of the most popular and rewarding online slots in history, including big winners such as Starburst, Mega Joker, and Gonzo's Quest.

On this page dedicated to the best NetEnt slots, you find the must-play titled created by this game provider with useful info about free spin bonuses and RTP percentages.

Microgaming is another big hitter, having created casino games that excite and entertain, including Castle Builder and Mega Moolah.

Play Online Slots on Different Device Types

Playing from your desktop or laptop may be the norm, but for many casino players it's the gambling-on-the-go convenience of a casino app that draws them in.

All modern online casinos are focused on providing great mobile gambling entertainment that means you can play from any time and at any place.

The three most common mobile casino devices, including the following;

Android - is as easy as loading up the app (if available) from the PlayStore or by visiting the casino on your browser. Games should load quickly and play smoothly.

iPhone - Apple iPhones are one of the most popular devices in the world, and for good reason. Download the iPhone casino app from the App Store when available and experience smooth and easy gameplay on the go.

iPad - A larger version of what iPhones have to offer, the iPad is perfect for getting a little closer to the action while still playing on your own terms with a larger screen. Load up your browser and start playing at iPad online casinos in an instant. Visit our iPad slots page to find all the best games and apps to play on your tablet.

Online Slots by State

Playing at online casinos in the U.S. can be tricky as it's not yet legal in every state. Certain states allow online casinos to operate and offer slots for players to enjoy, while others still impose strict gambling restrictions.

Top-rated online slots, table games, and even live casino games can be found at legal online casinos in the following states across the US:

How to Play Online Slots?

If you want to know more about how to play online slots, take a look at our handy guide for the best tips and tricks.

Decide on how much you want to spend, place your bet, and get ready to roll! Different online slots offer varying forms of bonuses so be sure to learn more about the available features before you start spinning.

How Do We Rate The Best Online Slots?

Every slot is unique in its own way and when we're reviewing popular casino games, we want to make sure that you're getting the best experience possible.

That's why we search long and hard for the best online slots and when we rate them, we look at how they play, the theme the slot provides, the RTP, whether or not it offers full mobile optimization, and how much it's possible to win.

You can rest assured that the online slots we recommend are safe, fun, and filled with winning possibilities.

Frequently Asked Questions about Online Slots

What are Megaways slots?

Megaways is a slot feature that was developed by Big Time Gaming to increase the number of symbols that appear on the reels. This increases your chances of winning with every spin.

Can you win real money playing online slots?

Yes! When playing at a legal real-money online casino that offers slots, you can place bets and win real cash in return. It's the most popular way to play at online casinos today!

How do I pick a good online slot game?

There are many factors to consider when choosing a good online slot. Find a theme that appeals to you, choose a slot with decent betting options, and make sure that the RTP is high to increase your chances of being a winner. Above all else, have fun and play responsibly.