Loosest Slots USA | Best Paying Slot Machines Online

Here you can find an updated list of loosest slots USA. As you probably know, not all slots providers publish payout percentage for individual slot machines. On the list below you can find only slots that offer official payout rate.

Cosmic Quest Slot

RTP: 98.5% . Rival.

Cosmic Quest Mystery Planets is currently the first on our list of loosest slots USA available online. It is a 5 reel, 20 lines game. The minimum bet is 0.01 per spin and goes up to $ 50. The reason for the high payout is the high Free spins feature and the expanding Wilds. If you land 3 or more Jackpot Jetpack icons you will get 10,25 or 50! free spins. All free spins wins are doubled.

The best casinos to play Cosmic Quest slot are Slots Capital and Cafe Casino.

Rock On! Slot

RTP: 98% Rival.

Rock On Slot is an edgy Rock themed game, part of the popular i-Slots series. Here you can also find expanding wilds, free spins feature and a special Guitar Hero style bonus game. This slot is a relatively simple to play, for sure in comparison to Cosmic Quest.

The best casinos to play Cosmic Quest slot are Slots Capital and Cafe Casino.

Good Girl Bad Girl Slot

RTP: 97.8% BetSoft.

One of the best online slots of all times (at least in my opinion). What is special about Good Girl Bad Girl slot is that you can control the volatility of the game. Choose the Good mode – and you have more frequent payouts of lower nature. Choose the Bad mode and you get a high volatility slot with less payouts, but higher chances to win big. Very Cool!

You can try this slot now with  200% up to $1,000 bonus at Slots LV casino. Here you can find Slots LV Review.

Doo-Wop Daddy-O Slot

RTP: 97.8% . Rival Software.

Doo-Wop Daddy-O is a simple and playful slot machine. There are 2 bonus games features however the secret to the high payout is in nice payouts during the regular play. The minimum bet is 0.01 per spin and goes up to $ 20.

You can try this slot with $10 no deposit bonus at Cafe Casino.

At the Copa Slot

RTP: 97.5%

This a new 3D slot by BetSoft. The game offer 4 bonus games and features and 3 progressive jackpots. The maximum jackpot of At the Copa slot is 430,000 coins ($43,000). The minimum bet per spin is $0.02 and up to $15.

200% up to $1,000 bonus at Slots LV casino

Sugar Pop Slot Machine

RTP: 97.5% BetSoft.

Unique interactive slot machine with Candy Crush theme. Sugar Pop slot has multiple play levels which you can unlock by filling the bar on the left. The higher the level – the higher the payouts, therefore It’s worth playing this slot for some time.

Best BetSoft real money casinos: Slots LV and Ignition casino.  If you wish to play on mobile, check our Slots LV mobile casino review.

Gold Rush Slot Machine

RTP: 97.4% Rival.

The online 3 reel slot machine on the list. If you are a classic slots fan, Gold Rush is a great place to start. The payouts are not high, but very frequent.

The best casinos to play Gold Rush are Slots Capital and Ignition casino.

After Night Falls Slot

RTP: 97.2%

Another multiple bonus feature BetSoft slot on the list. The payouts of After Night Falls slot are a bit less frequent than on At the Copa, but the max jackpot is much higher: 1,550,000 coins or $155,000! The bonus features include Collapsing wilds, Random multipliers, Click me bonus and more.

Best BetSoft real money casinos: Slots LV and Ignition casino.

Safari Sam Slot

RTP: 97.2% BetSoft

This is a Safari themed 5 reels slot. Again, various bonus rounds and features (some might say a bit too much). The max jackpot here is lower than in other BetSoft slots on the list and stands on 250,000 coins, however the max coin value is $1 (vs the common $0.1), therefore the maximum win can be worth $250,000!

Best casinos to play Safari Sam slot are Slots LV and Cafe casino. If you wish to play it on mobile then check our Slots LV mobile casino review.

WhoSpunIt Slot Machine

RTP: 97.2% BetSoft

Even without the nice RTP, this is one slot machine that you just have to try. We can’t explain exactly way, maybe it’s the time limited levels, maybe the intriguing murder mystery theme. You will have to see for yourself.

Best casinos to play for real money:  Slots LV and Cafe casino.

Best USA Casinos for Slots Players

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Most Popular Slots by Software

January 2020

 RTGRivalWGSSaucifyPragmatic Play
1Cash Bandits 2Hot HandCleopatra's Pyramid IICash VegasWolf Gold
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5Storm LordsPopping PiñatasWheel of ChanceZodiacMustang Gold
Where to PlayExtreme CasinoSlots LVMiami ClubVegas CrestBlack Diamond

March 2019

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2Cash Bandits 2
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4Sweet 16Almighty Dollar3X Wild CherryJumbo Joker
5Caesar's Empire5 Reel CircusTriple 10X WildCarnaval Forever
Where to PlayExtreme CasinoSlots LVMiami ClubBlack Diamond

March 2018

1Cash Bandits 2Party ParrotUltimate 10X Wild
Frankenslots Monster
2Aladdin's Wishes
Juicy JewelsKing TigerSugar Pop 2
3 Caesar's Empire5 Reel Circus Turkey ShootLegend of the Nile
4GemtopiaArabian TalesTriple 10X WildCharms and Clovers
5AsgardCleos CoinsWheel of ChanceTiger's Claw
Where to PlayExtreme CasinoSlots LVMiami ClubBlack Diamond

September 2017

 RTGRivalWGSPragmatic Play
1Caesar's EmpireMystic WolfUltimate 10X Wild
Wild Spells
2Aladdin's Wishes
Gold BricksKing TigerWolf Gold
3Gemtopia Jumping Jaguar
X Lucky SevensCaishens Gold
4Cash Bandits 25 Reel Circus Funky ChickenHot Safari
5AchillesChariots of FireTriple 10X WildPixie Wings
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June 2017

 RTGRivalWGSPragmatic Play
1Aladdin's WishesChariots of Fire 7x Lucky Sevens
7 Monkeys
2Caesar's Empire
CatsinoTriple 10X WildBlack Diamond
3Sweet 16 Mystic Wolf
Cash CowDragon Kingdom
4Achilles A Switch In Time King TigerWolf Gold
5Double Ya Luck!Golden Gorilla Wheel of Chance Reel Gangsters
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May 2017

1Aladdin's WishesTen Times Wins7X Lucky Sevens Frankenslots Monster
2Caesar's Empire

Mystic Wolf Mobile
Triple 10X Wild Charms and Clovers
3Achilles Five Times Wins
Wheel of Chance Good Girl, Bad Girl
4Bubble Bubble CatsinoKing Tiger Greedy Goblins
5Cash Bandits5 Reel CircusFunky Chicken
More Gold Diggin
Where to PlayExtreme CasinoSlots LVMiami ClubSlots LV

October 2016

1Count SpectacularFive Times WinsTriple 10X Wild Great 88
2Aladdin's Wishes
Arabian Tales Mobile
3X Wild Cherry
Dr. Jekyll & Mr. Hyde
3Cash BanditsMystic Wolf Mobile
Funky Chicken
4Witch's Brew
Five Times Wins
Wheel of Chance Charms and Clovers
5Caesar's Empire
Windy FarmTriple Triple Gold
Greedy Goblins
Where to PlayExtreme CasinoSlots LVMiami ClubSlots LV

August 2016

1Samba SunsetFive Times WinsTriple 10X Wild Aladdin's Magic Treasure
2AchillesMystic Wolf Funky ChickenNew Tales of Egypt
3Cash BanditsBig Cash Win Flamin 7s7 Monkeys
4Aladdin's WishesGold RushCherry BlossomsCrazy Jungle
5Caesar's EmpireVintage Vegas
Fat CatHot Safari
Where to PlayExtreme CasinoSlots LVMiami ClubBlack Diamond


USA Online Slots Providers – In Few Words


RTG is by far the most popular slots developer on the US market. However to be honest, it’s rather due to smart management and being in the right place at the right time than the quality of their slots. RTG were in the perfect place to take the market by storm when Microgaming and Playtech pulled out in 2006. Then, when VegasTech left in 2011, they became a real monopoly.

Since then Rival gained more ground, BetSoft entered the market and VegasTech returned under a new name (WGS), but RTG is still the market leader in terms of the number of players at their slots.

If we had to describe RTG slots in few words, we would say that they main focus is on classic 5 reel video slots. Recently there is a feeling of new blood in the company with 6 reel and 3D slots being launched, but 5 reels are still their bread and butter.



  • Simple
  • Classic look and sounds
  • Offer more slots than any of their competitors – over 200 machines.
  • Recently left their comfort zone and started launching different and innovative games.
  • Not enough diversity
  • Do not post official data on the payouts
  • Most slots are pretty tight
  • Progressive slots which are impossible to hit. If you do with to play RTG Mega progressive slots, the place to do that are Bovada group casinos: Slots LV and Ignition casino. The games here are not disconnected from RTG chain progressive network and actually paid few 7 digit jackpots.


The second biggest provider on the market. Rival is the opposite case to RTG. They offer superb slots, with high payouts and medium/high volatility – perfect combination to generate  nice winnings. However in terms of management they weren’t aggressive enough and suffered from poor choice of operators.

That has changed and currently there are plenty reputable Rival casinos for US players to choose from.



  • Offer superb variety of slots
  • Post official RTP – not for every slot, but for most of them.
  • High payouts + high volatility.
  • Rivals trademark i-Slots
  • There are still many tiny Rival brands which can be risky and should be avoided. Stick only to known and reputable brands with long history of operation.


WGS came to life after the closer of VegasTech. The games were sold and relaunched under the new name –  Wager Gaming Technology. So far, WGS haven’t managed to recreate the success of its predecessor. There are only few casinos that offer that software and unfortunately, not many new games were launched in the past few years.

WGS are definitely not the leaders when it comes to innovation, but they do know how to produce nice video slots. The highlights are their 7-reel slots and the superb Slots Tournaments which attract thousands of players.



  • Nice 5 reel video slots plus few unique 7 reels.
  • Frequent $$$ Slot Tournaments.
  • Launch only 2-3 new slots per year.
  • Not offered by many casinos.
  • Not very creative when it comes to design, layout and features.


BetSoft is an extremely popular game supplier worldwide which recently (2012-2013) entered the US market. The company is ranked as #1 3D slots provider. Their games feature extensive graphics, animations, video effects and sounds.

With BetSoft is either you love it or you hate it. Some enjoy the arcade like look and various bonus features (some slots offer 6 different bonuses). Others hate the slow game play with too many interventions.



  • Highest average RTP on the market.
  • Amazing visual effects.
  • Stacked with various bonus features
  • Not for classic slots fans: many stops, pauses, videos which might get annoying after some time.
  • Not offered by many casinos.
  • Do not offer official RTP stats.
Loosest Slots USA | Best Paying Slot Machines Online was last modified: February 24th, 2021 by Mark Cesley