Best Slot Sites & Real Money High RTP Slots in December 2024

Our team of experts have reviewed the industry's leading online casinos that feature real-money slot games. Each of these operators feature a lucrative welcome bonus offer that all qualified players can receive when they sign up for a new account. Doing so will also unlock access to the hundreds of the slots with highest RTP that each provides.

  

BetMGM Casino

One of the biggest names in the online casino gaming industry, BetMGM provides players with an elite user experience. With a catalog of more than 1,000 online slots that is constantly updating and growing, players will always have something new to check out and play. 

New users can play these slots with signing up for the BetMGM Casino bonus code for a 100% deposit match up to $1,000 plus a $25 no deposit bonus.

  🎉 Welcome Offer: 100% deposit match up to $1,000 + $25 on the house

  🔥 Bonus Code: ROTOCASINO (MI, WV); ROTOCAS (NJ, PA)

  🎰 Best RTP Slot: Book of 99 (99.0%)

Caesars Palace Online Casino

Depending on the state you're playing in, Caesars Palace Online Casino has hundreds of different online slots that players can use each time they log in. Caesars Palace Online Casino is known for having one of the cleanest layouts among the major players in the space, creating a stellar user experience as you try to win big on their array of online slots. 

Players who sign up using the Caesars Palace Online Casino promo code ROTOCASINO2500 will earn a 100% deposit match up to $2,500, which is easily the largest offer on the board.

  🎉 Welcome Offer: 100% deposit match up to $2500

  🔥 Bonus Code: ROTOCASINO2500

  🎰 Best RTP Slot: Mega Joker (99.0%)

bet365 Casino

The world's largest online gambling company, which also boasts one of the best sports betting apps, delivers a spectacular online casino that features some of the highest RTP casino slot machines. It has licenses with all of the largest software providers, so players know they're getting access to the best and brightest high RTP slots. 

Players who sign up using the bet365 casino promo code ROTOWIRE offer will receive up to 10 days of spins to use on these online slots. Once you deposit $10, you'll receive 10 mystery spins on a wheel that can unlock up to 20 spins each time.

  🎉 Welcome Offer: 10 Days of Spins

  🔥 Bonus Code: ROTOWIRE

  🎰 Best RTP Slot: Blood Suckers (98.0%)

DraftKings Casino

Known primarily for having one of the best sports betting sites as well as its DFS offerings, DraftKings also boasts a great online casino that features the best RTP slots. One major feature is the number of exclusive games that DraftKings provides its players that you won't find anywhere else. 

Its Dynasty Rewards program also means you'll be earning redeemable points with most of the games that you play. What's more, the DraftKings Casino promo code offer delivers $100 in casino credits to players once they place $10 in cumulative wagers.

  🎉 Welcome Offer: Bet $10, win $100 in casino credits instantly

  🔥 Bonus Code: Click Here

  🎰 Best RTP Slot: DraftKings Digits (98.05%) (exclusive to DraftKings)

FanDuel Casino

The industry leader in market share, FanDuel Casino is elite across the board, featuring hundreds of the best RTP slots on a platform that is easy to navigate and simple to use. Everything is straightforward and laid out cleanly, making for a great user experience. 

You'll be able to try out all of these high RTP slots with house money after using the FanDuel Casino promo code offer. Doing so during registration and placing a $1 wager automatically earns you $100 in casino credits at one of the best online slots sites. You can also check out some of the best sportsbook promos at FanDuel.

  🎉 Welcome Offer: Bet $1, get $100 in casino credits instantly

  🔥 Bonus Code: Click Here

  🎰 Best RTP Slot: Fort Knox Cleopatra (96.15%) (exclusive to FanDuel)

Golden Nugget Casino

Though perhaps lesser known than some of its mainstream competitors on this list, Golden Nugget Casino is still one of the industry's best online slot sites. Depending on the state you're located in, there are between 500 and 1,000 different titles available to players looking for the best RTP slots. 

The Golden Rewards Club lets you earn points with each slot machine you play, while the Golden Nugget Casino promo code offer earns players a 100% deposit match bonus up to $1,000 that can be used on the best RTP slots.

  🎉 Welcome Offer: 100% deposit match bonus up to $1,000

  🔥 Bonus Code: Click Here

  🎰 Best RTP Slot: Starmania (97.87%)

Fanatics Casino

The newest of the best online slots sites, Fanatics Casino has already made an instant impact with its array of the best RTP slots. Players can enjoy more than 100 different slots on its app-exclusive platform, making it one of the industry's top casino apps. In addition to a welcome bonus offer that provides new players with $50 in casino credits after they deposit $10, its FanCash rewards program is the most unique of any competitors in the space.

  🎉 Welcome Offer: Deposit $10, get $50 in casino credits

  🔥 Bonus Code: code here

  🎰 Best RTP Slot: Bloodsuckers (98.0%)

There is not a more sought-after type of game at online slot sites than the highest RTP slots. They have their own rules, layout, animations and payouts. There are a handful of different factors that go into ranking the top slot sites. Here's how we break things down so you can determine what's most important to your online casino gaming experience:

Bonuses & Promotions

The best online slot sites, many of which are also PayPal casinos, hand out welcome bonuses and recurring promotions to incentivize players to either sign up or continue placing bets with them. This can include casino credits and bonus spins that can be used on the slots with highest RTP, giving you the best chance to earn cash without using your own funds.

RTP Slots

High RTP slots pay out, on average, more than lower RTP slots. This doesn't guarantee a profit when playing these games, but it will increase your chances of success over time. The RTP of a game will always be listed in its description at the online casino you're playing at, so look for games with an RTP percentage of 97% or higher. That's important at real money online casinos as well as with sweepstakes casinos, which feature many of the same games but don't require you to risk real money.

Interface

We assume players are going to spend a good amount of time at the best online real money slots sites. That means the layout, interface, color scheme and navigation all should be to your liking. It should be easy to jump from game to game and to have easy access to your account for withdrawals and deposits. Above all else, the layout of your slots online real money options should make it a place that you enjoy logging into and playing at.

Customer Support

The top online slots for real money sites are well-oiled machines, backed by some of the industry's leading data, tech, and software. But it's always possible that small issues will pop up that require assistance, so it's important that these operators have multiple forms of customer support to help answer pressing questions about a game or your account. Methods include 24/7 live chat, phone number, email, FAQ pages or DMs on social media.

Licensing

The best online slot real money options are operated by a number of software companies that are constantly improving, updating, and creating new products. The top slots sites have licensing deals with these companies to use their games on the platform. The big names to look for include Playtech, NetEnt and Evolution among others.

There are literally thousands of different RTP slots. These are the ones with the highest RTP that will give players the best chance of earning cash profit when they log into their respective online casino.

  

Mega Joker (99%)

From NetEnt, this three-reel, five-payline online slot is one of the best in the industry. A progressive jackpot means the potential for massive wins, and Supermeter mode also increases the chances of bigger payouts. Jesters, Lucky 7s, bells and more will have you feeling ready to win big at the industry's leading slot machine.

Book of 99 (99%)

Relax Gaming brings you into a battle against the gods in Ancient Greece. Bettors have two chances to trigger bonus spins on this five-reel, 10-payline online slot with a whopping 99% RTP. Land three matching symbols in a row and win up to 15x at one of the best RTP slots on the market.

Blood Suckers (98%)

Keep your head (and neck) on a swivel with this vampire-themed online slot from NetEnt. With five reels and 25 paylines, there are a number of different ways to win big. Wilds, bonus spins and a Slaying Bonus give you multiple ways to win big, and the added bonus is this is one of the most widely available top RTP slots.

White Rabbit Megaways (97.77%)

Venture into the world of Alice in Wonderland with White Rabbit Megaways, an elite online slot from Big Time Gaming with more than 200,000 paylines. It's one of the coolest looking online slots in terms of animations and colors, and its stellar RTP makes it a great slot real money option for all types of players.

Starmania (97.87%)

NexGen Gaming takes us out of this world with Starmania, a five-reel, 10-payline online slot. The stars will literally align (red and gold ones, specifically) for the highest payouts, and top features include bonus spin bonuses and gambling any winnings by guessing the color of a card that gets flipped over.

It's important to always understand each real money slot's RTP at the best slots sites. Unlike traditional games like Roulette, Blackjack or Poker that have the similar rules no matter where you're playing, each online slot machine has its own set of rules and potential for payouts. Here's a look at how to best understand RTP so you can make more sense of what chances you stand of earning cash profit at the online slot machines you're interested in most.

Importance of RTP

Every online slot machine has an RTP percentage. This number signifies the expected payout over a period of time. Online casinos run thousands of trials on their games to produce an RTP percentage, which is usually between 95-99%. That number indicates the average return on $100 of wagers. It's not a guarantee of payout but does give players a better understanding of how likely a game is to return profit. State regulatory bodies make sure the RTPs on machines are accurate as games are independently tested and verified.

RTP vs Volatility

RTP is calculated over thousands of spins, so your experience with a handful of your own spins might (and likely will) differ. If you're playing one of the highest RTP slots with an RTP of 95%, that doesn't mean that $100 in wagers will return you $95. Some will win more while others win less. Volatility is normal considering the small sample size of one individual's gaming experience.

RTP vs House Edge

Even the best slot sites still have a house edge. Bettors will never see an RTP of 100%, otherwise that would mean the online casino isn't making any money. While some players will win more money than the average RTP of the best RTP slots, it's important to understand that the house always has a slight advantage with these games.

Real money slots are one of the most popular games at online casinos. The slots are engaging, the animations are fun, and it's the fastest game you can play in just seconds. The best slot sites offer hundreds of different options all with unique themes, meaning you'll get a new and enjoyable experience each time you log in. 

These sites also provide bettors with spins where you can use house money to play these games, and the sites also have free (or demo) versions of these slots so you can test them out before using your funds to play them. Signing up to get started on the best online slot sites takes just minutes, and you can claim welcome offers at each operator to try out the best RTP slots.