Best High RTP Slot Machines Online

Best High RTP Slot Machines Online

You should stick to high RTP slot machines if you want to enjoy slots without giving the casino too much of an edge. On average, online slots have an RTP of roughly 95-6%, so we picked games with at least 97% for our list.

In this guide, I break down the five best high RTP slot games available online to US players. Also, I will tell you the best online casinos for playing every high-return slot on my list.

Slot GameRTPDeveloperAvailable At
Curious Machine97.50%BetsoftRed Dog Casino
Aztec Warrior97.50%Dragon GamingDuckyLuck Casino
Gems Gala Spin & Lock97.45%Dragon GamingEl Royale Casino
El Loco97.08%Arrow’s EdgeDrake Casino
Quest to the West97.53%BetsoftBovada Casino

The Curious Machine

  • Developer: Betsoft
  • RTP: 97.50%
  • Jackpot: No
  • Demo Mode: Yes
The Curious Machine high RTP slot gameplay

The first spot on my list of the best highest RTP slots online is The Curious Machine from Betsoft. This slot game does not have a jackpot, but it still boasts an exciting theme and an RTP of 97.50%! It is a steampunk-themed slot game that has 30 adjustable paylines.

You can also increase your bet level in The Curious Machine, allowing you to wager up to five coins per spin. This creates a maximum bet of $60 per spin. 

The vortex wild symbol can substitute for most symbols in the game. Also, this special symbol will rearrange symbols on surrounding reels and potentially create additional wins. When there are no winning combinations, you have a chance to trigger the second chance feature for one free respin.

The Curious Machine includes other exciting bonus features as well. You can win free spins with up to a 5x multiplier. There is also a double-up feature available after any winning spin.

You can try The Curious Machine online for free or for real money at Red Dog Casino. This casino offers a variety of exciting casino bonuses for new members, too, such as the 275% crypto bonus worth up to $2,750.

Welcome Bonus

275% up to $2,750
  • 14 video poker games available
  • Live dealer games available
  • One of the biggest online casino welcome bonuses available

Aztec Warrior

  • Developer: Dragon Gaming
  • RTP: 97.50%
  • Jackpot: No
  • Demo Mode: Yes
Aztec Warrior medium volatility slot gameplay.

Aztec Warrior is another great example of the top high RTP slots online. It was created by Dragon Gaming and has an RTP of 97.50%. Also, it is one of the best medium-volatility slot games available online. 

The key to big wins in Aztec Warrior is are the multiple bonus features. For instance, you can win up to 12 free spins with the Aztec Sun special symbol. There are also special symbols that can expand to cover the entire reel.

You have a chance to increase your winnings after every successful spin. The gamble feature offers the chance to double your winnings if you can guess the color of the next card from the deck. This slot has 10 fixed paylines and uses a 5×3 grid.

DuckyLuck Casino offers free and paid versions of this exciting high RTP slot machine. It also offers up to $3,000 in bonus funds to new members with the 600% crypto welcome bonus.

Welcome Bonus

600% up to $3,000
  • Huge selection of banking methods
  • Plenty of live dealer games
  • Accepts US players

Gems Gala Spin & Lock

  • Developer: Dragon Gaming
  • RTP: 97.45%
  • Jackpot: Fixed
  • Demo Mode: Yes
Gem's Gala high volatility slot gameplay.

Up next is another Dragon Gaming slot, a game titled Gems Gala Spin & Lock. This high-class slot game has an RTP of 97.45%. In addition to having a high RTP, this slot is one of the top high-volatility slot machines.

There are four fixed jackpot prizes up for grabs in Gems Gala Spin & Lock. The prizes are tied to your stake amount, with the biggest prize, the grand jackpot, offering a 5,000x multiplier. You can wager up to $100 per spin, allowing for a maximum grand jackpot of $500,000!

Gems Gala includes two special bonus features tied to the scatter symbol. You can choose between free spins or a bonus game with the lock-in feature activated. The Spin & Lock feature is also available and is your path to winning a jackpot prize.

You test your luck in Gems Gala Spin & Lock at El Royale Casino. You can play the free or paid version, and new members can use the crypto VIP bonus to get up to $23,000 in bonus slot funds.

Welcome Bonus

230% up to $23,000
  • One of the highest welcome bonuses in the US
  • Plenty of special promo offers available
  • Easy to use interface and fast, dependable gaming

El Loco

  • Developer: Arrow’s Edge
  • RTP: 97.08%
  • Jackpot: Progressive
  • Demo Mode: Yes
El Loco high RTP slot gameplay.

El Loco from Arrow’s Edge is the next game on this list of the highest RTP slot machines that everyone should play. You can compete for not one but two progressive jackpots in this lucha libre-themed slot game. The base RTP is only 96.46%, which is still above average, but it is boosted to 97.08% thanks to the progressive jackpots.

To trigger the free spins feature in El Loco, you must get special bonus symbols on the first, third, and fifth reels. You can win up to 15 free spins at once, and you have a chance to win prize multipliers worth up to 5x.

This high RTP slot also includes a progressive bonus called the El Technico Feature. You earn a new level in this feature every 25 spins, and the higher your level, the better your rewards.

Drake Casino is the best place to play El Loco online. The casino offers a 300% welcome bonus worth up to $6,000 across your first three deposits. 

Welcome Bonus

300% up to $6,000
  • Lots of bonus options with big dollar amounts
  • Options to play casino game tournaments for big payouts
  • Three levels of progressive jackpots available

Quest to the West

  • Developer: Betsoft
  • RTP: 97.53%
  • Jackpot: No
  • Demo Mode: Yes
Quest for the West high RTP slot gameplay.

Rounding out my list of the highest RTP online slots is Quest to the West. This Chinese-themed slot game has an RTP of 97.53%, the highest of any game on my list. There are plenty of exciting bonus features in this slot game.

The Monkey King Walking Wilds, for instance, stay on the board for multiple spins, moving one reel to the left after each spin. These unique wilds can also trigger the Quest to the West bonus round, after which the game is named.

In this bonus round, you are awarded a set amount of free spins. You can earn more when Walking Wilds appear on the board. As long as there are wilds on the board, the feature will continue.

There is also a feature called the Meter of the Heavens, which fills during the base game. When it is full, the meter triggers a bonus round that offers up to a 1,000x multiplier.

Bovada Casino is the best option for trying Quest to the West online today. You can try the free version or play for cash prizes using the 375% welcome bonus, which is worth up to $3,750.  

Welcome Bonus

375% up to $3,750
  • Rewards Program Redeemable for Cash Bonuses
  • Hot Drop Jackpot Progressive Games
  • 100% Poker Bonus up to $500 & Variety of Poker Tournaments Available
About the Author
Shaun Stack profile picture
Shaun Stack
Shaun Stack has authored dozens of casino blogs and joined our team in 2022. He enjoys playing any casino game but is particularly fond of Blackjack and Texas Hold'em. Also, he likes betting on sports, especially the NFL. Shaun is a native of Kansas City, but now lives in Pennsylvania and is an avid PA sports fan.

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