Top Payout Online Slots Canada – 2025

High RTP slot games offer the best value for money at the casino, rivaling classic table games such as blackjack and European roulette. These games can extend the life of your bankroll, giving you more bang for your buck. To help you find them, the Casino of the Kings team has been researching and testing 120+ best paying online slots. In this guide, we share what online slots payout the most, along with the best developers, expert tips, and more.

Top 10 Highest RTP Slots Canada

Choosing a game with great RTP helps to increase winning chances. We have collected the top ten slots that will let you enjoy substantial payouts.

1. Gates of Olympus by Pragmatic Play | 96.5% RTP

This highest rtp online slot draws inspiration from Greek mythology. Using features like a cascading reels mechanism that removes winning symbols to reveal new ones. Zeus unpredictably awards multipliers that boost payouts to 500x during both standard gameplay and Free Spins. The game features a “Pay Anywhere” system that enables players to win even if symbols land in different positions.

2. Sweet Bonanza by Pragmatic Play | 96.51% RTP

The colorful candy-themed game uses a scatter pays system to reward players when symbol clusters appear anywhere on the reels. Players can benefit from Free Spins multipliers that boost winning chances by reaching up to 100x. The game remains thrilling because cascading mechanics work alongside medium-high volatility levels.

3. Aviator by Spribe | 97% RTP

Aviator is a crash-style game where players see their multiplier grow over time but must cash out before their plane crashes. Aviator stands apart from traditional best payout slot machines because it demands players make real-time decisions while implementing strategies that boost its interactive nature. As the waiting time extends, the multiplier grows large,r but the chance of losing becomes greater.

4. Sugar Rush 1000 by Pragmatic Play | 97.5% RTP

Sugar Rush 1000 features cascading reels alongside an innovative multiplier system that increases the multipliers of positions with winning matches. Winning potential increases during Free Spins because multipliers stay active until the round ends. Because of its elevated volatility, sugar Rush 1000 provides large winning amounts for fortunate players.

5. Book of 99 by Relax Gaming | 99% RTP

Such a rare and high RTP of 99% is achieved through its classic Book of Mechanics, which introduces expanding symbols in the Free Spins round. The collection of wild book symbols by players enables more opportunities to activate Free Spins. Strategic players choose Book of 99 because of its significant winning opportunities and regular bonus payouts.

6. Mega Joker by NetEnt | 99% RTP

Mega Joker is among the best paying slots that combine traditional fruit symbols, a progressive jackpot, and strategic rewards. It’s done through its Supermeter mode, which greatly boosts RTP. Mega Joker consists of a simple 3-reel design with 5 pay lines and employs graphics that reflect classic slot designs. With optimal gameplay, the high volatility allows for substantial victories.

7. 9 Masks of Fire Roulette by Real Dealer Studios | 97.3% RTP

Classic roulette mechanics join forces with the thrilling elements of the 9 Masks of Fire slot in this hybrid game. The appearance of mask symbols during spins allows players to earn multipliers, enhancing the excitement of traditional roulette gameplay. Combining features with traditional table game dynamics delivers a distinct and captivating player experience.

8. Immortal Romance by Games Global | 96.86% RTP

This vampire-themed high paying slot features a rich storyline with four character-based Free Spins modes. Immortal Romance includes rolling reels and multipliers with a Wild Desire feature that activates randomly and makes all five reels wild. Its powerful win potential and rich, immersive theme make it popular among fans.

9. 1429 Uncharted Seas by Thunderkick | 98.6% RTP

The nautical-themed slot combines a 5-reel setup with 25 paylines, expanding wild features, and Free Spins. This slot offers a high return to player rate, leading to regular wins, making it the perfect choice for players who enjoy lower volatility slots. This hand-drawn visuals and seamless gameplay offer players a distinctive and beautiful experience.

10. Blood Suckers by NetEnt | 98% RTP

Blood Suckers combines horror elements and a vampire-hunting bonus game with impressive RTP for regular payouts. The Free Spins feature multiplies all winnings by two, leading to larger possible best online slots payouts. The slot delivers an immersive horror experience through its eerie soundtrack and dark visuals.

What is RTP?

The RTP or “return to player” rate of an online casino game indicates how much of your bet you expect to receive back in the long run. The higher this rate, the more you can expect back, and the lower the rate, the less you can expect.

For example, in a slot with an RTP of 96 %, you can expect to receive back $0.96 for every $1 you bet. Remember that this average RTP is calculated over millions of rounds and does not indicate how much you can expect back each time you bet.

Calculating RTP

Calculating the actual RTP of high payout slots is much more difficult than in table games. There, you can determine the odds of each possible event and compare them to the payouts to calculate the high RTP.

However, calculating the RTP isn’t as easy, as you aren’t figuring out the RTP of each bet. You’re figuring it out for the whole game. To single out slots with high RTP rates, developers must calculate the probability of hitting each possible combination, multiply those odds by their respective payouts, total those values, and divide by the total amount wagered.

In the end, the formula used to calculate the RTP looks a little something like this:

Top 10 Best Payout Slots Online in April 2025

Wondering which online slots payout the most? Our experts have spent hours researching and comparing slots, compiling a list of the best options.

Who Calculates Online Slots Payout Rates

Top payout online slots go through multiple checks before their RTP is advertised at an online casino. This ensures that by the time it gets to you, you can be sure that the rate you’re seeing is accurate.

• First, the game developer calculates the theoretical RTP based on the average hit rate and potential payouts.
• Once a game has been finalized and is ready for testing, it will be sent to a recognized testing body, such as iTech Labs, eCOGRA, or Gaming Laboratories International. These companies run simulations to test that the theoretical RTP and actual RTP are the same.
• Gaming authorities such as the MGA, AGCO, and Kahnawake Gaming Commission regulate all legitimate online casinos and game providers. These regulatory bodies conduct regular audits to ensure the fairness of each game. This includes testing and verifying the random number generators and checking the integrity of the software for built-in biases.
• The slots with highest RTP are tested by running millions upon millions of simulations. During this process, the bet amount and returns are tracked simultaneously and used to calculate the actual RTP of the game. The more simulations run, the less variance becomes a factor, and the more likely the results will be correct.

Top Providers of Best High RTP Slots

When choosing a slot, don’t just focus on the RTP. Consider the overall game quality, including its features, volatility, and entertainment value. While researching and testing the top paying casino slots in Canada, our experts took extensive notes, highlighting the games that they found to be the most enjoyable.

NetEnt

Founded in 1996, NetEnt is known as one of the top providers in the world. They’re committed to pioneering innovations in the iGaming industry, creating games on the cutting edge of new technologies. Some of their most popular high-payout games include:

• Blood Suckers,
• Secrets of Atlantis,
• Böb: The Epic Viking Quest for the Sword of Tullemutt.

Microgaming

One of the longest-running game developers to date, Microgaming launched back in 1994. The company is known for creating games with an emphasis on graphics and sound design, creating an engaging environment that compliments its exciting gameplay features. Some of its highest payout online slots include:

• Hot Ink,
• Win Sum Dim Sum,
• Couch Potato.

Playtech

With more than 25 years in the casino industry, Playtech has established itself as one of the leading software developers. They’re committed to providing their players in Canada with excellence and innovation, which can be seen in their popular games, such as:

• Alien Hunter,
• Golden Tour,
• Arowanas Luck.

Play’N Go

Back in 2005, the creators of Play’n Go noticed a gap in the market for high-quality slots that are designed with mobile gameplay in mind. Since then, they’ve committed to creating innovative, exciting, and well-designed slots that are made to be played on the go. Their most popular mobile-friendly, high RTP games include:

• Gem Drop,
• Mr Toad,
• Gold Trophy 2.

The main aim of playing online slots is to have fun, so look for games that offer great entertainment as well as a high payout rate.

How to Check RTP in a Slot

While browsing Canadian casinos with the highest slot payouts, you’ll find that there are multiple ways to check a game’s RTP rate. These include:

• On the game selection screen. Some online casinos in Canada offer information such as a slot’s developer and payout rate right on the game selection screen. Simply hover over a game’s icon to reveal the info.
• In the game’s information section. All slots have an information page that offers info on things like symbol payouts, bonus rounds, and RTP rates. Look for the small “i” symbol in the corners of the game.
• On a casino’s RTP breakdown. We’ve found that some casinos offer a downloadable list of games along with their payout rates. This can typically be found at the bottom of the homepage.

New High RTP Slots in Canada 2025

New slots are being released all the time, providing plenty of options to Canadian players. During our research, our experts found a variety of slots released this year. Here are just some of the best payout online slots our experts have tested this year:

House Edge vs RTP

When evaluating a casino game’s payout rate, players often quote its RTP rate and house edge. While they may sound different, these terms are two sides of the same coin.

The RTP rate of a game is how much you can expect to receive back from each bet, whereas the house edge is the amount of a bet the house wins each time you bet. So, a casino game with a 95% rate will have a house edge of 5%. This means, on average, you’ll receive back $0.95 for every $1 you bet, whereas the casino will win $0.05 for every $1 you bet.

RTP vs Volatility

RTP and volatility are key factors in the best payout slots but have different purposes. RTP represents the long-term payout percentage of a game. It indicates how much money it gives back to players over time. Volatility measures the risk level and frequency of the payouts.

Slots with the highest RTP generally offer better theoretical returns, but high volatility slots can still have low RTPs and provide big but infrequent wins. Choosing between them depends on a player’s preference. Low volatility suits those who prefer frequent smaller wins, while high volatility appeals to risk-takers chasing massive payouts.

Expert Tips for Maximising Your Winnings

To help you get the most from your experience with the highest RTP slot games, our experts have provided some helpful tips that you can use in your next gameplay session.

1. Practice bankroll management. Even though these games have the best payout rates in the casino, it’s possible to lose your bankroll if you’re not careful quickly. We recommend only betting a small percentage of your bankroll each round to minimize the risk of going broke.
2. Read the rules. Before you start playing, read through the rules of the game and familiarize yourself with the symbols, gameplay features, and bonus rounds. By understanding what’s going on, you put yourself in the position to make the best possible decisions.
3. Claim casino bonuses. Bonuses and promotions extend the value of your deposits, allowing you to play your favourite games for real money longer. Missing out on these offers is like passing up on free money!

Pros and Cons of High Payout Games

Based on their description, you may think that there are no downsides to playing the highest percentage payout slot machines. However, nothing’s perfect, and there are some negative aspects to consider.

To that end, we’ve listed the key pros and cons of high-payout games, giving you everything you need to make an informed decision.

Our Verdict on the Best RTP Slots

To sum up, high RTP slots are the best way to make your money go further when playing at an online casino. These games have the highest payout rates in the casino and typically offer low volatility levels, giving you the best chance of winning in the short term.

Before you start playing our recommended slots, check out our unbiased casino reviews to find the top places to play and always gamble responsibly.