Best Online Casinos for Slots in the US & NJ (2025) – Top Sites & Games

Far and away, the most popular games to play inside online casino sites remain the slots. Whether you like the old-school look and style of reel games, or you’re more prone to lean toward the modern look of video slots with their high tech bells and whistles, storylines and 3D graphics, you won’t want for the opportunity to play these options at any of the leading legal and regulated online casinos in the US market.

What if you like to play progressive jackpot slots? Perhaps you are partial to trying new games, or prefer the unique feel of a slot that you know is exclusive only to a specific online casino. You might be a newcomer to online casino gambling and maybe a bit intimidated by the process. There are casinos that will work to help educate you in the ways of online slots. Or you could find yourself at the other end of the spectrum, a high roller who is looking to get in on some serious action.

Whatever the case, if you’re seeking these answers, you’ve come to the right place. Our extensive review of the slot game offerings at the top US online casinos delves into the market in pursuit of all of the answers to the questions you might have about where you should go for specific types of online slot play. 

Check out all the best online casinos slots

Hard Rock Casino – Best For Number Of Slot Games

If it’s sheer volume of games you are seeking out, then you can’t go wrong with Hard Rock. There are literally thousands of slots (more than 2,500 different titles) to play in the Hard Rock online casino library. You won’t find a US online casino site with a deeper bench of slot options. 

You will also discover that Hard Rock covers all the bases in the slot game realm. There are titles that are exclusive to HardRock Bet NJ. In fact, due to the popularity of the brand, many slot developers will give first access to any new games to HardRock Casino. New games are arriving every week. 

If you like traditional fruit-based reel games, or prefer video slots with the latest in HD and 3D technology, it’s all here. Progressive jackpots with massive life-altering jackpots, luckytap, Megaways games and penny slots like Starmania and Dead Or Alive. It’s all at Hard Rock online casino.

DraftKings – Best For New Slots

DraftKings is one online casino that can come close to rivaling Hard Rock and MGM Online Casino in terms of the number of slot games it offers to players. However, one area in which the DraftKings Casino truly excels is in the area of new games. In December 2024 alone DraftKings was adding 377 new games to its library. 

When we checked in with the DraftKings, there were no fewer than 25 games populating the site under the new icon in the drop down menu. Titles included Monsters vs Diamond, Prosperity Link Cai Yun Heng Tong, Wheel Of Winners Link & Win, Retro Arcadia, Ape Rulez and Turtle Kingdom. 

bet365 Casino – Best For Exclusive Online Slots

At Bet365, the company has its own software development team, so the Bet365 Casino is constantly adding exclusive titles to its site that won’t be found at any other US online casino site.

These unique slots are categorized under the exclusive icon. Some of the more popular choices in this library are Magic Forge, Festival Farm, Call Of The Samba, Book Of 666, Book Of Claddagh, Boardwalk Brawl, Totem Rising and Fierce 50s. 

Borgata Online – Best For Progressive Jackpot Slots

As part of the MGM Resorts family, the Borgata Casino has access to all of the massive progressive jackpot slots that are part of the BetMGM brand. Some of the most well-known titles in this library include MGM Grand Millions. Fruit Blaster, Bison Fury, Melon Madness, and Loot’enkhamun And The Dead Sea Scrolls

The Borgata also offers many of the most popular progressive jackpot slots in the industry. This includes traditional favorites such as Divine Fortune, Fortune Coin and 88 Fortunes.

Caesars – Best High Payout RTP Slots

In the world of online slots, one of the key factors to keep in mind is the return to player (RTP) rate. That’s the percentage of money bet on a slot that is paid back out to those playing the slot. Any slot with a 96% rate is considered to have a solid RTP.

At Caesars Palace, you’ll find a number of slots with RTPs of 96% and higher. There’s the ever-popular vampire-themed Blood Suckers, offering a 98% RTP. Medusa Megaways delivers at a 97.63% rate. The progressive jackpot game Divine Fortune comes in at 96.59%. There’s also Guns N Roses video slot (96.98%), Road To Riches (96.24%), Raging Rhino (96.30%) and 88 Fortunes (96%).

View more sites that offer high RTP slots.

FanDuel Casino – Best Slots For New Players

There might not be the massive volume of slots at FanDuel that you’ll find at some other online casinos. However, what the site does offer is an all-inclusive online casino that caters to new players and recreational players.

You can play slot games at FanDuel Casino for as little as $0.10 per pull. You’ll find plenty of exclusive games and jackpots, as well as new games that are regularly being added to the library. And best of all, each and every FanDuel slot can be played in demo mode. It gives you a chance as a new player to gain a feel for how the game works before being required to risk any of your own money. 

Horseshoe Casino – Best Slots For High Rollers

The newest casino in the Caesars Entertainment line, the Horseshoe Casino is offering plenty of exclusive slots, as well as many featuring the unique Horseshoe brand. And if you’re someone who likes to play within the high life, this is the online casino site for you.

There’s a number of progressive slots featuring mega jackpots, and a litany of high limit slot games from some of the top developers in the online slot game industry. These titles include Horseshoe Rising Rewards by Games Global, and 2x3x Horseshoe by AGS. There’s a High Limit icon right in the Horseshoe Casino drop down menu, making it easy for you to find the slot games that will let you go big.

These are the Best US Online Casinos Slots

What are the best online casinos for slots in New Jersey? – Our Top Picks for 2025

For us at NJ.Bet, picking the best online casino for slots in New Jersey isn’t easy—each site has something special to offer. Look! Bet365 Casino hooks you up with exclusive branded video slots you won’t find anywhere else. MGM online casino brings its own collection of online slots straight from Atlantic City’s top gambling spots. Wheel of Fortune Casino gives you that classic TV game show slot vibe, while Hard Rock Bet blows everyone away with the biggest slot library—over 2,000 games! You see? It’s not an easy choice, but!

Anyway, we’ve played at all of them, but if you ask us which casino is most promising for NJ slot players, we’d have to go with PlayStar NJ and Stardust (also in PA & Ontario). These two new, independent sites are giving new players 500 free spins and a $25 no deposit bonus. These brands both have classic and next-gen slots with hold&win, re-spin options for real money play, as well as demo free-to-try mode. Think of some well-optimized mobile slots, 6-reel machines, Megaways, buy bonus features, and a mix of old-school and innovative games.

Best Casino Slots Bonuses – Top Slots Casino Deals

If you’re looking for casino slots bonuses, New Jersey’s top slots casino sites have some great deals for new players. At Bet365 Casino, you can claim up to $1,000 in a first deposit match. BetMGM NJ Casino offers a $1,000 bonus plus $25 on the house to get you started. Over at BetRivers NJ Casino, new users can get up to $500 in losses back with code NJBRV. And if you’re playing at Borgata Casino NJ, you’ll score a $1,000 deposit match plus $20 FreePlay with code NJBETBRGT.