It is no real surprise that slots is one of the most enjoyed online casino games on the market, given the diverse range of themes and exciting array of features these games have to offer. The industry continues to grow and flourish as demand remains high.

Slots were first reimagined for the web over two decades ago and as the technology has improved and more slots providers have been created, the choice and quality of games out there has only gotten better.

To keep up with player expectations, sites such as Monopoly Casino release new quality slots titles from top developers all of the time. With so many slots to choose from, players never have to get bored of replaying the same title. 

While there is an incredible range of slot games to choose from, some stand above the rest due to their captivating themes, innovative features and winning potential. If you are looking for some new games to try in 2025, then take a look at this list of some of the most popular slot games being played this year. They are suitable for both experienced players and these completely new to the game as well:

Gonzo’s Gold - Net Ent

Released in 2021 by top slot developer Net Ent, Gonzo’s Gold has been a popular choice amongst online slot fans. This game contains many of the features seen in our Net Ent titles, such as free spins and the cluster pays mechanic. 

Its predecessor is the 2011 game Gonzo’s Quest, which was considered to be a huge innovation at the time with its cascading symbols. By comparison, Gonzo’s Gold is simple but loved for its ease of play and winning potential.

The graphics feature mysterious Inca Temples and symbols include powerful Inca Gods. The scatter symbol is represented by a golden temple that points to a red sky. Gonzo’s Gold is a fun, immersive game that is certainly worth trying out.

Book of Dead - Play’n’Go

Another highly recommended slot game with an ancient history focus is Play’n GO’s Book of Dead online slot. This game centres around Egypt and stars an adventurous explorer known as Rich Wilde, who is once again on the search for valuable treasures.

The expanding symbols is the main feature of this game that you should care about. By landing three scatter symbols on the reel the player is able to unlock ten free spins. Before the free spins commence, an ordinary symbol is selected at random to act as a special expanding symbol.

Special expanding symbols are special because they can expand to cover all three positions on the reel. They only do this when additional winnings can be made from paylines with winning combinations. 

This is a high volatility slot title that has exciting gameplay and great winning possibilities. 

Gates of Olympus - Pragmatic Play 

The slot developer Pragmatic Play has released one of their takes on an ancient or mythical world themed slot game with the highly popular Gates of Olympus. This game is themed around Greek Gods and is played on a 6 x 5 grid format. 

The tumble feature is one aspect of the game that makes it stand out from other online slots. This feature ensures that winning combinations are removed from the grid so that they can be replaced by new symbols that can cascade for more opportunities to win.

The colour palette of this game is vibrant with dazzling jewel tones and includes symbols such as golden crowns, rings and impressive precious stones. The visuals alongside the powerful accompanying sound effects all help this game to be an enjoyable experience for the player.

Big Bass Bonanza Megaways  - Pragmatic Play 

If you would prefer to try out a game that uses the popular megaways mechanic, then the Big Bass Bonanza Megaways might be the ideal game for you to play on next. This fishing focused game features cascading reels, free spins and increasingly multipliers. 

It is part of a whole series of Big Bass Bonanza games, which is currently one of the most successful slot series to hit the internet. The megaways version was released in 2021 so it has been around for a little while, however it continues to receive highly positive reviews from players. They enjoy its features as well as the overall look and feel of the slot grid and surrounding graphics.

These are just a few of the top online slot games that casino gamers are enjoying in the year 2025. If you are looking for new slots titles to try, you can test out the demo versions of these games before playing them for real. Or you make use of welcome offers that many online casinos offer to new players when they sign up for an account.