Online Slots – Free, Real Money & Game Reviews

Slot machines are the most profitable part of a US casino. From Las Vegas to Atlantic City, slot machines take up more space than any other casino game. Online slots work the same way. If an online casino features 300 games, 250 of those games will be online slots. Mobile slots work the same way.

 

Most Popular Slot Games

Free Slot Games

We have over 4500 free slot games. Play some of the most popular titles from Bally, IGT & Aristocrat.

FAQ on Slots

Have a question? We've probably answered it in our FAQ guide. A four part series covering everything about slots.

Real Money Slots

Where to play real money games.

About Us

Find out how to contact us here. Also includes our authors, privacy policy and more.

Mobile Slot Apps

Play slot games on your mobile device. Apps for Android, iPhone, iPad and tablet devices.

Guide to Online Slots

Our guide to slots covers both live and online slot machines, including traditional design companies like IGT and Bally slot machines to online slot developers like Microgaming, RTG, and NetEnt. This page discusses 3-reel classics, 5-reel video slots, licensed slots, progressive jackpots, and 3D slots.

Though the world of slot machines is vast, it doesn’t take long to figure out how slots work and how to play online slots. If you have any questions, feel free to send us an email or read our slots FAQ, page,  which answers over 120 questions about the online and mobile slots industry here in the year 2020.

Online Slots for Real Money

Slot software has more variety than any other casino game online. Some casinos offer Vegas slots while others include 3D animation, spectacular graphics or cater strictly to bonus games. Our site offers software pages for all of the major brands including Bally, IGT, RTG, Betsoft, Microgaming and more.

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Mobile Slots Casinos

Most online slot games are now available for mobile play. Our mobile slots guide outlines where you can play for free as well real money. We focus mainly on Android slots and iOS slots for iPhone and iPad, but also discuss the BlackBerry and Windows Phone operating systems.

In each review, read through our mobile section, which includes comparison reviews, a dedicated page for each device, and more. This includes which casinos offer a mobile app for your device – which is most online casinos in 2020. Like online slots, you can play mobile slot games for real money or free.

Tips for Playing Slot Machines

Now that you know slot machine outcomes are based on a random chance, you can choose your favorite online slots with confidence. Lots of people win lots of money playing the slot machines at their nearby casino or online gaming site. The trick is to keep your gaming within responsible limits and have fun.

  1. Higher Denomination Slots Have a Better RTP: Return-to-player (RTP) is a percentage you can expect to win back. The higher the RTP, the more you’ll win over a long period of time. If you play at higher coin denominations, the RTP is higher on most slot machines.
  2. Bet Max Paylines to Activate the Main Jackpot: Especially if you play progressive slots, make certain you wager enough to trigger the progressive jackpot. Most progressive slots require the max payline to be active. Don’t hit the royal flush, only to realize you didn’t max out the paylines and activate the progressive jackpot.
  3. Pick Entertaining Online Slots: Choose games that fit your personality. If you like pop culture franchises, play licensed slots. If you prefer the best chance to win, play 3-reel classics and fixed-jackpot slots. If visual quality and graphics are most important, play 5-reel video slots with interactive bonus games or even 3D slots. The great thing about online and mobile slots is there’s something for everyone, so shop around.
  4. Play Within Your Budget: Finally, play within your budget. Have a bankroll of discretionary cash you can spend without difficulty. Play for fun and don’t expect to win big jackpots. Online slots are entertainment, so treat them like you would tickets to a sporting event or concert. Or if you don’t have a big budget, treat them as you would a trip to the movie theater or restaurant. If you win playing the slots, even better.

 

 

Slot Machine FAQ

Part 1 - Slot Machine Odds, Wins & Payouts

Part 1 of our slot machine FAQ answers questions on slot odds, betting systems, payouts, winning and more.

Part 2 - Slot Clubs, Payback % & Hit Frequency

Part 2 of our guide covers some of the more technical questions like payback rates, hit frequency, probabilities.

Part 3 - Progressives, Jackpots & High Limit

Part 3 answers questions for high limit play, progressive jackpot odds, slot methods, tipping and more.

Part 4 - Video Slots, Games & Vegas Revenue

Part 4 covers slot revenue in Vegas, playing online slots, video slots, the RNG, weighted slots and more.

Top 5 Online Slot Software Developers

Slot software has more variety than any other casino game online. Some casinos offer Vegas slots while others include 3D animation, spectacular graphics or cater strictly to bonus games. Our site offers software pages for all of the major brands including Bally, IGT, RTG, Betsoft, Microgaming and more. Below are the top five software platforms powering online casinos. Each page includes a list of the top five sites in addition to a complete overview of the various games on offer.  You can view the most popular five software developers below or see our complete list here.

Below are the top five software platforms powering online casinos. Each page includes a list of the top five sites in addition to a complete overview of the various games on offer.  You can view the most popular five software developers below or see our complete list here.

How We Rate Online Slots

Readers might wonder how we arrive at our conclusions. At the start, we collect basic facts about the online slot. Our reviewers discuss jackpots, paylines, and the main features each online slot has. After we give an overview, our reviewers describe the coin denominations, jackpots, bonus games, and other features in greater details.

  • Overall Rating: Our summary and recommendation to player.
  • Jackpot: The biggest prize available, whether progressive or fixed.
  • Reels: How many vertical rows exist on the game screen.
  • Paylines: How many lines trigger a win.
  • Developer: The company which develops the online slot software.
  • RTP: Return-to-play or the expected payback percentage bettors can expect.
  • Available In: English-speaking countries where this online slot is available.

What You Need to Know about Our Slot Reviews

This section gives a brief description of the theme, developer, and main reasons players enjoy the game. If this profile sounds good, you’ll know whether you should continue researching the game or not.

Popular Slot Machine Features

Each review gives a snapshot of six popular features that online slots often have. With simple highlighted icons, you can see if the slot being reviewed has these features.

  • Free Spins: Spins that cost nothing and carry no risk.
  • Bonus Round: Interactive bonus games, Mega-Spin Wheels, or free spin rounds.
  • Wild Symbols: Reel icons that substitute for most or all other symbols on the reel.
  • Scatter Symbol: Valuable wherever they appear on reels, these often unlock bonus games.
  • Multipliers: These multiply the value of a prize, ranging from 2x to 100x the payout.
  • Mobile Slot: Whether the slot is compatible with Android or iPhone devices.

Coin Denominations and Jackpots

Coin options tell a player what the minimum or maximum bet on a slot machine is. Is an online slot for penny players, mid-stakes gamblers, or high rollers?

Jackpots tell the biggest prize available. 3-reel classics often have fixed jackpots in the low thousands of dollars, which are more attainable. Progressive slots have accumulated jackpots that grow into the hundreds of thousands or millions of dollars.

Bonus Rounds & Fun Bonus Features

Bonus rounds take a break from the main game. They offer players a chance to win big prizes without risking their bankroll.

Fun bonus features include a variety of wild symbols like stacked wilds, expanding wilds, and sticky wilds. It also includes interactive bonus games, multipliers, respins, and the Gamble Feature.

Review Feature: An Online Slot in a Nutshell

Towards the end of each slot review, we provide a short summary of the online slot. This summary provides key features, jackpot information, and the developer. This gives players a quick review of the game to remind them of its pros and cons.

Online Slots FAQ

How Do Online Slot Machines Work?

Like land-based slot machines, online slots use a random number generator (RNG) to produce results. Every second, the RNG produces thousands of results. At the instant you hit the “Spin” button, the RNG selects the latest result and matches it to the correct reel symbol configuration. You’re paid out if winning combinations hit.

Most importantly, each spin is independent of the previous spin, so there is no predicting when a jackpot is about to hit.

RNGs have been around since the late 1970s, so this is proven technology that’s over 40 years old. Many innovations and improvements have happened over the years, but online and mobile slot machines work no differently than the electronic slots you’ll find in brick-and-mortar casinos in 2020.

Does a deposit bonus work for online slots?

Yes. Welcome bonuses tend to restrict certain games from clearing the wagering requirement, but online slots are never restricted. They count 100% towards the playthrough requirements. This free play cash allows players to test new online slots without risk of losing their bankroll. Some gaming sites offer no-deposit bonuses, which provide free bonus cash simply for registration.

The one exception is progressive slots. Most of the time, online slots with progressive jackpots are restricted from satisfying the wagering requirement. Until you clear the requirement, play the fixed jackpot slots.

Should I join a sweepstakes casino? How do they different from traditional online slots sites?

Sweepstakes casinos are a new form of online gaming site which purports to involve legal online betting in 31 U.S. states. Players pay real money to acquire casino credits called “sweeps cash”, which is used to play online slots or table games with a game mechanic technically described as an “online sweepstakes”. The rules are compared to McDonald’s Monopoly sweepstakes or Pepsi sweepstakes. When it’s time to cash out winnings, the player trades in the sweeps cash for real money, which supposedly makes the game legal.

There are two things you should know. One, sweepstakes casinos are based on theoretical laws, because there are no court cases or DOJ rulings defining the law. They might or might not be banned forms of gaming. Two, sweepstakes casinos are owned by relatively new startup companies based in Australia. If you want to sign up for a trustworthy online or mobile casino, it’s better to pick online casinos with a long reputation and many years in the business.

We review online casinos with a long term reputation in the industry. They use accepted practices and are licensed by offshore regulatory agencies. We can verify traditional online casinos because of 20+ years of resources built up to track such sites. Our reviewers also have been in the industry for over a decade, so we know the community well.

How do I know if I’m playing in a legal casino?

Much is written about the complicated legal framework of the US online gambling community. What isn’t often discussed is it’s legal for US residents to play online for real money. Federal laws like the Wire Act and the UIGEA ban certain forms of online gaming, while states like New Jersey and Pennsylvania fight these bans.

Most US states don’t have online gambling regulations. That being said, the ban is on site operators and payment processors, but offshore online casinos accept US players without hesitation. One way to tell if you’re playing at a licensed online casino is if it fosters responsible gambling or consumer protections. For instance, if it posts 1-800-Gambler, a toll-free hotline for problem gamblers and speak with a trained helpline workers, then the site is probably legit.

Whatever the case, no American resident has ever been prosecuted for playing online slots for real money. That might change sometime in the distant future, but not anytime soon. The key is to pick trustworthy, reliable online casinos that pay on time. Read our online casinos reviews to find the best slots casinos online.

How Do Slot Machines Work?

Gone are the old electro-mechanical slot machines with static displays and heavy frames. These days, everything inside of a modern slot machine is controlled by a random number generator, a fancy device that spits out numbers all day. For example, when you pull the lever or push the spin button or in any way trigger the reels to start spinning, that random number generator comes up with a random number to assign to your spin, and that is how it is determined if you win or lose.

If you understand that today’s slot machines have a brain that runs on random numbers, you can avoid falling for inaccurate slot machine strategy advice. Anything you read online or hear from a friend that suggests that slot machines can be beaten is bunk. Each spin of the reels of a slot machine is unique from the one before it and has nothing to do with the one after it.

Slot machines are usually the most profitable part of the casino floor. More space is dedicated to slot machine gaming than any other category of casino game, from Las Vegas to tribal casinos to Monte Carlo. Though the world of slot machines is vast, it doesn’t take long to figure out how they work and how to play them.

Types of Slot Machines

There are a few different categories of slot machines, though a modern slot player only really needs to understand straight slots, video slots, progressive slots, and Buy a Pay slot machines.

Straight slots – These are traditional slot machine games. They don’t provide bonuses, and they pay out according to a standard pay table. Straight slots are the easiest slot machines to play. They’re excellent for beginners. If you’re just becoming familiar with the basics of slot gambling, stick with the straight slots. If you get bored or you want more action, consider moving on to video slots.

Video slots – “Video slots” are the fancier slot machines on the floor. These machines usually have larger screens to display movie-quality video and animation. These slots tend to be loud, flashy, and are usually placed in a conspicuous part of the casino floor to attract attention. Video slots tend to have licensed themes, like from movies or TV shows, and some of them are just loaded with bonus games and other features.

Progressive slots – “Progressive slots” are linked to other machines in the casino or even other slot machines at casinos around the country. The top jackpot for these machines is linked to other slots. A tiny percentage of every bet is added to a progressive jackpot total. Spin the right combination on your machine and the entire progressive jackpot is yours. Progressive slot machines tend to offer a worse payout percentage than machines that aren’t linked progressively, so it’s a bit of a risk to switch to a progressive machine and chase the jackpot.

Buy a Pay slots – Buy a Pay slots games have more than just one payout table that you can wager on, and you choose how many tables to bet per pull. Betting an extra payout table costs an extra wager for each one. Yes, it ends up costing more money to bet on Buy a Pay slots, but your chances of winning are better, too. Because different combinations pay out different amounts on each activated payout table, the number of potentially lucrative combinations goes up.


How Do Slot Machines Work?

Gone are the old electro-mechanical slot machines with static displays and heavy frames. These days, everything inside of a modern slot machine is controlled by a random number generator, a fancy device that spits out numbers all day. For example, when you pull the lever or push the spin button or in any way trigger the reels to start spinning, that random number generator comes up with a random number to assign to your spin, and that is how it is determined if you win or lose.

If you understand that today’s slot machines have a brain that runs on random numbers, you can avoid falling for inaccurate slot machine strategy advice. Anything you read online or hear from a friend that suggests that slot machines can be beaten is bunk. Each spin of the reels of a slot machine is unique from the one before it and has nothing to do with the one after it.

Tips for Playing Slot Machines

So now that you know slot machine outcomes are based on a random chance, do you feel like there’s no way to beat them? Don’t feel that way. Lots of people win lots of money playing the slot machines at their nearby casino or online gaming site. The trick is to keep your gaming within responsible limits and have fun.