Online casinos were born in the mid-90s thanks to the advent of the Internet and amazing technological advancements. At the very beginning, online casinos were only equipped with a couple of Roulette and Blackjack games.
However, not long after the very first online casinos opened their doors, online slots were included as well and they became an instant hit among beginner and even more seasoned players. When compared to other online casino games, online slots remain the most popular games due to their simplicity, high RTPs, very simple rules, and high payouts.
Online slots have come a long way from simple three-reeled and one-payline one-armed bandits. Thanks to advancements in the development of online casino software, online slots have become more engaging, more entertaining, and more rewarding.
Today, online slot fans and enthusiasts are spoilt for choice. Over the years, hundreds of online slots like Megaways appeared on the scene with innovative gaming layouts, richer graphics, and of course, more exciting themes and storylines.
While there are hundreds of different slots to choose from, several online slots that have stood the test of time remain ultimate players’ favorites years after being released.
Released by NetEnt in 2013, Gonzo’s Quest is one of the most popular online slots you can play at almost every online casino out there. It has an interesting Mayan theme and it follows an adventurer named Gonzo on his journey to El Dorado.
Its gaming grid features 5 reels and 20 paylines and it benefits from a couple of in-game bonuses including a Free Falls mode that grants winning multipliers up to 15x. It also features an innovative Avalanche Reels mode, so every consecutive winning brings winning multipliers. In 2020, NetEnt and Red Tiger Gaming released Gonzo’s Quest Megaways.
Discussing the most popular online slots and not mentioning Microgaming’s Mega Moolah is simply unacceptable. Mega Moolah was released in 2006. Over the years, Mega Moolah made many online slot fans and enthusiasts instant millionaires since it comes attached with a progressive jackpot.
In April of 2021, a new Mega Moolah progressive jackpot payout record was set. One lucky player received a staggering €19.4 million playing Absolootly Mad Mega Moolah. Back to the original Mega Moolah slot, it boasts 5 reels and 25 paylines. As players get to the breathtaking African plains with Mega Moolah, they also benefit from wild symbols, free spins, and winning multipliers.
Book of Dead
Powered by the Play’n GO software, the Book of Dead slot was released in 2016. It follows a young explorer, Rich Wilde on his ancient Egyptian adventure. The company’s flagship title boats a simple gaming grid with 5 reels and 10 paylines. The major bonus feature of this high volatility slot game is its Free Spins round that offers unlimited spins.
To trigger the bonus, players need to collect three or more Book of Dead scattered bonus symbols. During the Free Spins round, a randomly chosen expanding symbol produces huge winnings up to 5,000x players’ stake.
Book of Ra
Similar to Book of Dead is the most iconic, most played Novomatic release Book of Ra. When compared to other slots on this list, Book of Ra is probably the simplest to play and is one of the best games for mobile devices in 2021. Even though it comes packed with 5 reels and 9 paylines, it is quite retro in terms of gameplay and gaming layout and still, it has loyal fans across the globe.
The high volatility Book of Ra slot benefits from replacing wilds that land on all five reels. The same symbol that has replacing powers is also the game’s scattered bonus symbol that grants access to the Book of Ra Free Spins round.
Released in 2012, the Gladiator slot powered by Playtech is another popular online slot you can play at almost any online casino. The game takes inspiration from the Gladiator movie starring Russell Crowe and Joaquin Phoenix.
It takes players to ancient Rome where they get to witness gladiators fighting for glory. There are two Gladiator games, one standard and one attached with a progressive jackpot. Both feature 5 reels and 25 paylines, Free Spins bonuses, and winning multipliers.
Apart from awesome progressive jackpot prizes, Gladiator slots grant a fixed 5,000-coin prize for landing five Emperor symbols on the same spin on the same payline.