Long gone are the days of playing video games while sitting alone or with a couple of friends at a console. In 2025, more adults than ever are enjoying online games whether that’s big name franchise titles or at casinos like the Bally online casino. In fact, there are more than 1.17 billion people playing their favourite video games online, a number that seems to be increasing every year.
In this article, we look at the most popular online games for players aged 18 and over. Read on to find out what they are!
Mortal Kombat 11
First released in 2019 by the developers at NetherRealm Studios and published by Warner Bros. Interactive Entertainment, Mortal Kombat 11 is a fast-paced, action-packed fighting game designed for mature audiences. Known for its intense gameplay and iconic characters, this R-rated title delivers a brutal and cinematic experience that has captivated fans of the series for decades.
As a player, you choose from a diverse roster of fighters, each with their own unique abilities, fighting styles, and backstories. The game features a rich storyline, where characters battle for control over time itself, as well as multiplayer modes that allow you to face off against opponents from around the world.
Casino Games
Casino games have grown in popularity over the last few decades, which is due in large part to the rise in online casinos. Now players can enjoy their favourite games like roulette, poker, blackjack, baccarat and more while on-the-go or from the comfort of home – with many people choosing to access online casinos from their mobile devices.
Another benefit to playing casino games online is the range of options that are available to players. As online casinos don’t have the same limitations as their land-based counterparts, they can bring players new and more immersive games faster.
Rainbow Six: Siege
First-person shooters have become one of the most played online games, and Rainbow Six: Siege has certainly become a favourite of many. Developed and released by Ubisoft in 2015, this game sees players take on the roles of elite operatives that come from different counter-terrorism groups worldwide.
The difference between this first-person shooter and others on this list is that Rainbow Six: Siege requires a great deal of tactical planning and coordination which makes it ideal for those who like strategic online games.
The Witcher 3: Wild Hunt
For those looking for an immersive and mature RPG experience, The Witcher 3: Wild Hunt is a must-play. Released in 2015 by CD Projekt Red, this critically acclaimed R-rated game takes players on an epic journey through a vast, open world filled with rich storytelling, moral dilemmas, and complex characters.
You step into the boots of Geralt of Rivia, a monster hunter (or Witcher) for hire. The game offers a perfect mix of engaging combat, deep customization, and exploration, allowing players to craft their own path through a world brimming with danger and intrigue.
One of the standout features of The Witcher 3 is its narrative depth and player-driven choices. Every decision you make can have long-lasting consequences, shaping the relationships, politics, and outcomes of the world around you. This is a game that rewards players who enjoy exploration, strategic planning, and immersive storytelling.
With its detailed world, complex characters, and mature themes, The Witcher 3: Wild Hunt is an unforgettable gaming experience designed for adult players who enjoy a blend of action and thought-provoking narrative.
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