Slots by Theme – Play the Best Slot Machines Grouped by Theme

Are you looking to free online slots? We’ve got you covered! On this page, you will find over 2,100 different online video slots sorted by theme. Check out the available free online slot machines by theme by clicking on any of the buttons below. Would you rather see an overview of all available video slots? Then check all online slots instead.

Browse Online Slot Machines By Theme

Here at, our casino experts have taken the time to categorize all of our free online slots by theme. Click any of the themes above to find slots and casino games based on that particular theme. Play your favorite online slots or try a new one!


Do Slot Machine Themes Matter?

Nowadays casino software providers go to extreme lengths to make their games stand out from the crowd. However, we don’t really think the theme of a slot would make or break a good online slot machine game. In the end, it is the gameplay combined with the graphics and built-in bonus mechanisms that make a truly unique casino game. 

Some themes are used quite often, like Ancient Egypt, yet some slots like Book of Dead conquer the hearts of casino players across the globe whilst others don’t. Other examples of great Ancient Egypt-themed slots are Pyramyth by Thunderkick and the Cygnus slot by ELK Studios. 

Branded Slot Machines 

Apart from themed slots, there are also branded slot machine games. These slots are based on popular brands to appeal to more players and generate excitement no other game can offer. Examples of branded online slots are:

Music Slots

Online slot machines based on music bands often have a killer soundtrack. Some of the most famous music band-branded slots are NetEnts Guns n Roses, Motörhead, and ZZTop Roadside Riches. You’ll definitely be singing along whilst playing, which is obviously a whole lot more fun than just playing and listening to the same sound effects all the time!

Movie-themed Slots

Movie-themed slots often contain clips from the actual movies, most of the time during the bonus game. Of course, everything else, like the symbols, for example, is based on characters or objects in the movie. Our favorite movie-themed slots are most definitely Iron Man 2, The Godfather, and Jumanji, but you might like The Goonies or Jurassic Park Instead.

Superhero-themed Slots

Marvel slots and DC games are massively popular, especially among casino players from the United States and Japan. These types of online slot machines often have features based on the superpowers of their heroes. Some of the most iconic superhero theme slots are Suicide Squad, Aquaman, and the Incredible Hulk

Space Slots

For some out-of-this-world reason, slot machines and other casino games with a space or intergalactic theme are very popular among players across the globe. Examples of such games are NetEnt’s classic Starburst slot or the Alien-themed Reactoonz slot and its sequel Reactoonz 2 by Play ‘n GO. 

Television Show and Serie-based Slots

Just like movie-themed slots, casino software providers did their best to create fun and exciting slots based on television shows and series like Rick and Morty, Peaky Blinders, and even NetEnt’s insanely popular Narcos slot.   

Videogame Slots

Some casino software developers went a step further and created videogame-themed slots based on games like Lara Croft: Temples and Tombs and Street Fighter 2

All of these branded slots have exciting features that you won’t see at any ‘regular’ online slot machine game. So, if you’re looking for something new, we definitely recommend checking out these special branded slot machine games. 

The Weirdest Online Slots

If you are looking for the weirdest online slots and other casino games with unusual concepts, you should definitely try out some slots developed by the following casino software providers:

NoLimit City

As it says on the tin, NoLimit City doesn’t really have boundaries when it comes to the design of online slot machines. The gaming studio has launched quite some edgy slot machines like San Quentin (in a prison), the Mental slot, based on old-school insane asylums, and even a take on the blockbuster movie Das Boot, the Das xBoot slot machine. 

Check out NoLimit City slots


4ThePlayer is a casino software provider that truly puts its players first. The gaming studio develops unique online slot machines with stunning graphics and slick gameplay. 9K Yeti and 10x Rewind are examples of online video slots unlike any other slot machine on the market. The features and built-in bonus mechanisms of these slots are truly unique and exciting.

Relax Gaming

Relax Gaming doesn’t really produce slots as weird as NoLimit City and 4ThePlayer, yet continues to amaze players across the globe with its quirky games like Ramses Revenge, where an explorer gets chased around by a mummy, and Hellcatraz, which happens to take place in a prison. 

Which Slots Theme to Play?

If you cannot decide which slot theme you want to play, we encourage you to just try out multiple slot machines until you find one that you like. With over 2,100 free online slot machines available, you must be able to stumble upon at least one that you really dig.