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What Are The Most Popular Slot Games at Online Casinos

Drew Ellis

By Drew Ellis

Published:

popular slot games

Online casinos are increasingly popular in legal iGaming states.

What makes up the majority of the business is online slots.

While the seven online casinos states don’t have detailed enough revenue data to say what games are brining in the most wagers, there is a sense of what some of the most popular online slot games are.

The popular games tend to fit into some different categories, like highest payout games and high RTP slots.

If you’re looking to enjoy some of the popular online slots available, you can find them at many of the top Pennsylvania online casinos and New Jersey online casinos.

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Let’s start with an easy category, the high RTP slots.

High RTP slots refer to the games that have a Return to Player Percentage above what is considered average.

In the online casino world, the average RTP of a slot game is considered to be 96%. Anything above that that is considered high, and slot games that are above 97% tend to draw more attention.

RTP indicates what a slot game pays back to customers over its lifetime. The highest the RTP means the more it pays back to users over its many years of play.

High RTP Online Slot GamesRTP
Blood Suckers98%
Codex of Fortune98%
Starmania97.9%
Medusa Megaways97.6%
White Rabbit97.2-7%
Texas Tea97.4%
Golden97.2%
Secrets of Atlantis97.1%
Medusa II97.1%
Medusa97.0%
Hotline97.0%
Reel Rush97.0%

High RTP is one thing, but actually having the biggest payouts is another.

Progressive jackpot slot games are very popular with iGamers, as the top prize continues to build with each spin. Customers can contribute a small bit of extra cash to go toward the progressive jackpot.

The largest jackpot in online casino history came in November 2025 when $22.4 million was handed out to a Michigan player on the game Huff N’ Even More Puff.

There’s been several progressive games that have been able to produce top prizes of over $1 million at top online casinos.

These large jackpots have come from titles like:

Another characteristic that online slot players will focus on is volatility. The volatility describes what type of payouts you can expect from the slot.

High volatility slots tend to have the largest payouts, but will also feature the most infrequent wins. Despite that, they are popular for players that are looking to strike it big during an online session.

Popular high volatility slots include:

  • Bonanza
  • Book of Dead
  • Buffalo
  • Dead or Alive
  • Huff N’ Even More Puff
  • Huff N’ Lots of Puff
  • Huff N’ Puff Money Mansion
  • Medusa
  • Medusa Megaways
  • Mercy of the Gods
  • MGM Grand Millions
  • Monopoly Megaways
  • Oink Oink Oink
  • Wheel of Fortune Megaways
  • White Rabbit
  • White Rabbit 2
  • Wolf It Up!

Another online slot type that draws a lot of player interest is the Megaways slots.

Megaways slots throw out the traditional paylines and icon sizes and mix them in a blender.

Each Megaways slot provides payout by matching symbols in successive reels. Icons can vary in size, covering a single space or being as large as the entire reel. With all these variations, it leads to thousands of different ways to win.

On top of that, many also include cascading reels. When a winning formation is created, a user gets credited with the win, but then the winning symbols crumble and bring in fresh symbols that can lead to another win. Players like the ability to maximize a single spin with multiple win potential.

Popular Megaways titles include:

  • 88 Fortunes Megaways
  • Blood Suckers Megaways
  • Bonanza Megaways
  • Buffalo King Megaways
  • Cash Eruption Megaways
  • Extra Chilli Megaways
  • Gonzo’s Quest Megaways
  • Hypernova Megaways
  • Monopoly Megaways
  • The Goonies Megaways
  • Who Wants To Be A Millionaire Megaways
  • White Rabbit Megaways
Drew Ellis
Drew Ellis

Drew Ellis has experience covering the gambling industries in North America and around the world. Decades of media experience provide him with the background to handle the complexities of different gambling laws and policies around the United States and North America. Ellis has primarily focused on online and retail casino news since 2021. Prior to working in the gambling industry, Ellis spent over 20 years in the newspaper industry, covering sports and the gambling. His work for The Mt. Pleasant Morning Sun and The Oakland Press was recognized with awards by the Associated Press and other media organizations. Drew has also contributed to the Detroit Free Press and the Associated Press.