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.

The Curious Machine

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.

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Aztec Warrior

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.

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Gems Gala Spin & Lock

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.

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El Loco

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. 

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Quest to the West

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.  

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