Many successful slot releases have been transformed into slot series, providing a variation of mechanics and gameplay features, coupled with the same popular design that could be found in the original release. Some slot series may consist of only 2 or 3 titles, but other franchises comprise many releases added over the years. These slots often follow the theme of the original release and feature gameplay mechanics similar to those who play starburst slot. So today, we will be taking a look at some of the biggest slot game series in 2025.
Big Bass
The Big Bass game series is potentially one of the biggest game series of all time, let alone in 2025. The fishing theme is huge in the industry and has been for over a decade, with plenty of developers jumping on the trend and creating their own unique titles with alternating mechanics and some interesting twists on the genre. The series, which started in 2020, has seen over 30 releases under the title, all differing when it comes to mechanics, bonus features or even adaptations to the classical fishing theme.
Advancements in gaming technology have also played a major role in shaping the series, allowing developers to introduce smoother gameplay, enhanced visuals and more interactive bonus rounds with each new release.
There is an array of popular slot game releases in the Big Bass series, including:
- Big Bass Bonanza
- Big Bass Day at the Races
- Big Bass Amazon Xtreme
- Big Bass Hold and Spinner Megaways
- Big Bass Splash
Book of
The ‘Book of’ series is a game franchise that mostly plays on the popular ancient Egyptian slot theme, but has adapted to various genres. There are many slot developers who have taken on the ‘Book of’ mechanics that were first introduced to the industry in 2005 through the Book of Ra slot. The gameplay in this slot series is the result of the book symbol, often presenting the same or similar modifiers across all instalments, including the brick-and-mortar casino versions that began the ‘Book of’ growth.
There are many titles that are well recognised on the market and feature in the ‘Book of’ series, such as:
- Book of Dead (Play’n GO)
- Book of 99 (Relax Gaming)
- Book of Kingdoms (Pragmatic Play)
- Book of Mega Moolah (Microgaming)
- Book of Atem WowPot (Microgaming)
Age of the Gods
The Age of the Gods slot series was initially introduced to the market in 2016, with Playtech’s release of the Age of the Gods: King of Olympus slot. Since then, there have been over 30 Age of the Gods slot games released, leading all the way up until 2025, featuring a variety of mixed visuals and gameplay features. In the theme, it is common to see designs that reference Greek Mythology, which can be found across both the visual display and gameplay.
The series is coming up to the 10-year mark and has had a long spell in the industry, with some big-name titles, such as:
- Age of the Gods
- Age of the Gods: Furious 4
- Age of the Gods Glorious Griffin
- Age of the Gods King of Olympus
- Age of the Gods Norse: Ways of Thunder
1000 Slots
This Pragmatic Play game series doesn’t take on the style of a typical series, but influences the gameplay of already well-established titles. It mainly impacts the gameplay of the titles it features within, adding new mechanics to already popular slot games on the market.

As a result, the themes and visuals vary between titles in this series, with some of the most popular instalments being:
- Starlight Princess 1000
- Gates of Olympus 1000
- Sugar Rush 1000
- Sweet Bonanza 1000
- Wisdom of Athena 1000
‘Le’ Slots
Despite not being one of the more classic game series on the market, the ‘Le’ slots series has seen a recent rise in popularity, adopting various different themes and designs, incorporating the character of ‘Smokey the Raccoon’ throughout. Developed by Hacksaw Gaming, these slot games feature a similar animated style in all titles, making a recognisable display, as well as similar bonuses and mechanical features that develop the gameplay.
Overall, the ‘Le’ slots series features some incredibly detailed games, such as:
- Le Bandit
- Le Pharaoh
- Le Viking
- Le King
- Le Zeus
Wilde Slots
The Wilde slot series, developed by Play’n GO, is one of the more classic slot game series, being first introduced in 2012. The series, which is now over 12 years old, features an array of characters associated with Aztec and Ancient Egyptian themes, along with various visuals and themed bonus features centred on explorers.
The series is constantly evolving, and features some top titles on the market, such as:
- Rich Wilde and the Book of Dead
- Rich Wilde and the Tomb of Insanity
- Cat Wilde and the Doom of Dead
- Cat Wilde and the Eclipse of the Sun God
- Rich Wilde and the Amulet of Dead
Responsible Gaming
Like all online slots games, it is important to ensure gameplay remains safe and fun at all times.


