Online slot machines use a Random Number Generator to develop exceptional results every time. The RNG generates thousands of random numbers every second. The minute a player spins the reels, the software's mathematical module decides where the reel must stop. Once the reels stop spinning, the computer deciphers the outcome and notifies the player.

So, how does the casino make money? Online casinos use Return to Player to calculate how much money is returned. Then, the casino retails the balance amount. The money that returns to the player in the form of winnings is the RTP. Most online slots have around 95% RTP, while some games have over 98% RTP.

You can calculate RTP by dividing the win and turnover figures. For example, if a video slot accumulates $1,200,000 in turnover and returns $1,085,000 in wins over a month, the RTP can be calculated as 1,085,000/1,200,000 = .9042 or 90.42%.

There are several parameters to consider while choosing the best online slot for real money. Here's everything you need to keep in mind.

Low or High Variance Slot?

• If the payout ratio is x10,000 or higher, it's a high variance slot.
• If the payout ratio is between x5,000 and x10,000, it's a medium variance slot.
• If the payout ratio is below x5,000, it's a low variance slot.

Special Features

Certain video slots pack special features to improve the jackpot size. Progressive slots are a prime example. These slots tend to return higher winnings than standard video slots.

Slot RTP

Video slots with a higher RTP return more significant wins. Look out for video slots with high variance and the highest RTP.

There are nine common types of real money slots. These are:

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  Three-Reel Classics

  This is the most common type of video slot. These are ideal for beginners since they're easy to learn. In addition, three-reel classics have high variance, which means players have a higher chance of winning big.
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  3D Slots

  3D slots replicate 3D graphics without using special glasses. The goal is to make the screen appear realistic and make the characters and other objects seem within grasp. Their primary function is similar to other video slots.
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  2D Slots

  2D video slots are the most common type of online slots. They're popular as they don't need high-end hardware requirements and can be accessed on the move from mobile devices. 2D slots use RNG to determine the winning combination.
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  Progressive Jackpot Slots

  Every wager a player makes contributes to the jackpot until it's claimed. Progressive jackpots can range in the millions, but the chances of hitting the jackpot are slim due to low variance. Therefore, players must wager higher amounts to qualify for the progressive jackpot.
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  Megaways Slots

  Megaways slots use the Megaways random reel modifier mechanism. This alters the number of symbols appearing on the screen after every spin. Hence, offering far higher ways to win than traditional online slots.
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  Win Both Ways Slots

  Traditional video slots pay when a winning combination forms from left to right across the reels. Win both ways slots payout even when a winning combination starts from the right. This drastically increases your chances of winning.
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  Bonus Buy Slots

  Players can gain instant access to a game's primary bonus by paying a premium. This is often called feature buy, and the price tag is between 50x and 100x your stake. Bonus buy slots are available in limited geographies.
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  Six- and Seven-Reel Slots

  Six- and Seven-reel slots are new in comparison to traditional Five-reel slots. They're quickly becoming popular as players can form longer matches. Thus, improving the chances of winning bigger jackpots.
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  Fruit Slots

  Fruit slots are traditional video slots. They feature between 3 and 5 reels and between 3 and 4 rows. They use fruit symbols to determine payouts and familiar icons like playing cards and bells.

• Cascading Reels: Cascading or collapsing reels is a bonus feature that appears every time players land a winning combination across the reels. The symbols that form the winning cluster are replaced by new icons, increasing the chances of winning a larger amount.

• Expanding Wilds: Depending on the video slot, certain wild symbols expand to cover entire reels in a specific pattern. Expanding wilds are triggered randomly every time a wild appears across the reels. This feature helps form several winning clusters simultaneously.

• Sticky Wilds: Sticky wilds perform the same functions as a regular wild, except it doesn't disappear every time you spin the reels. Instead, sticky wild stays around for a particular duration, improving your chances of forming a winning cluster.

• Multiplier Symbols: Multipliers work precisely as the name suggests. Players unlock a bigger multiplier with each successive win. However, the count resets when a winning combination fails to appear across the reels.

• Bonus Games: Bonus games are additional features that can be triggered during a game. These amplify a player's chances of winning by unlocking hefty prizes. However, they last for a specific duration but can be retriggered when the conditions are fulfilled.

• Scatter Symbols: Scatter symbols trigger the bonus features like free spins, mini bonus games, etc. Players must land three or more scatters to unlock the bonus rounds. However, the requirements can vary between developers.

• Wild Symbols: Wild symbols replace the low-paying icons to form a winning cluster. Wilds can replace every other icon depending on the developer except for the scatter. There are several types of wilds, including Sticky Wilds, Stacked Wilds, Shifting Wilds, Expanding Wilds, etc.

The following top 10 highest RTP slots for real money have been tested and verified by our experts to be safe. Thanks to the different software companies that create and supply, these games have exclusive features and themes. Our reviewers focus on various key aspects when testing slots, including the bet size, bonus features, volatility, and, most important, the RTP percentage. So, these are the top best real money slots you can check out:

You will be lost for choice when picking the best real money slots in Philippines. We have listed the most popular slot games you can play for real money to save you from the confusion and heavy work. They include:

Golden Fish Tank

This is a Yggdrasil-powered slot with a 5x3 layout and 20 possible wins. It has a medium variance and a decent RTP of 96.8%.

Book of Dead

This is a popular modern Play'n Go video slot with 3 rows, five reels, and 10 fixed paylines. Besides the wide betting range, Book of Dead has a standard RTP of 96.21.

Lucky Catch

Lucky Catch is an RTG video slot that boasts massive free spins, random wilds, and many other exciting features. You play on a 5x3 grid and 25 fixed win lines.

Magic Portals

Launched by NetEnt, the Magical Portal video slot has a unique theme, eye-catching graphics, and lucrative bonus features. It stands out with an RTP of 96.5%.

Gems Bonanza

• Ice Casino: $1,500 + 270 free spins
• Zoome: €1,200 + 250 free spins
• Oxi Casino: €400 + 200 free spins
• Vulkan Vegas: $1,000 + 125 free spins
• Spin Samurai: $800 + 75 free spins
• 22Bet: ?18,000
• King Billy: $2,500 + 250 Free Spins
• 20Bet: $120 + 120 free spins
• EnergyWin: $500
• Shambala: ?29,000 + 180 Free Spins

Finding the best casino for playing online slots for real money can be a challenge if you don't know where to look. We've listed the top video slots along with the best casinos, so you find everything you're looking for under one digital roof.

Big bonuses and promotions are involved in playing real money online slots. The size and form of freebies will vary from one casino to another. Some casinos offer free spins, and others reward cash on online slots. However, these incentives are not free. You must meet terms and conditions, such as the wagering requirements, before you can cash out your winnings. These are the bonuses you can claim at real money casinos: