Outer space exploration and the possibility of discovering extraterrestrial life on another planet have always fascinated people, so it’s no surprise that the alien theme is one of the most popular ones for casino online games.
If you want to spin the reels with alien forces or explore cosmic treasures, this guide is for you. We’ve found the best alien-themed and sci-fi slots you can play today at the best online casinos like Betiton Ireland.
What makes space-themed and alien slots some of the best online casino games? The allure of aliens, UFOs, and outer space has always inspired curiosity and fascination; these slots interpret these themes in fun and unusual ways to create engaging games.
Sci-fi slots never seem to get old, and software providers always find innovative ways to reinterpret this popular subject.
Sci-fi slots bring extraterrestrial theories to life with intriguing interpretations, often involving intergalactic missions, mysterious spacecraft, and alien encounters combined with the possibility of winning cash prizes.
Additionally, the sense of mystery surrounding aliens and the vastness of the universe creates an atmosphere of tension and adventure, making for an intriguing online casino experience. Players can immerse themselves in vibrant, otherworldly visuals while trying to uncover alien treasures or achieve big wins.
Below, we explore some key features you can observe across most alien slots that make these games so interesting.
Here’s our list of the top 10 best online casino slots featuring alien and sci-fi themes:
| Online Slot | Provider |
| Aliens | NetEnt |
| Space Wars | NetEnt |
| Invaders from the Planet Moolah | Light & Wonder (WMS) |
| Cosmic Fortune | NetEnt |
| Area 51 | IGT |
| Galactic Streak | Playtech |
| Event Horizon | BetSoft |
| The Final Frontier | Microgaming |
| Mars Attacks | Blueprint Gaming |
| Reactoonz | Play’n GO |
The Aliens video slot remains one of the best online casino games. It’s one of NetEnt’s earlier online slot games, and despite being an older title, it boasts immersive sci-fi visuals and stunning 3D graphics.
Like most sci-fi slots online, it has a 5×3 grid with 15 lines and various features. The game has unique levels of featureswhere you can unlock new levels by filling the ‘Alien Activity Meter’ when collecting multipliers.
With each level you reach, you unlock bigger potential rewards and features, including respins and multipliers. Combined with other in-game features like wild symbols, Aliens is arguably one of the most engaging games from this software provider.
Space Wars is another of NetEnt’s best alien slots, featuring quirky futuristic characters and incredible graphics. The symbols are made up of aliens and other themed symbols, floating against a typical outer space backdrop and creating a five-reel, four-row grid.
Space Wars is the ideal title for those who like to play online slots with a sci-fi theme and exciting bonus rounds. Some slot features include wild symbols and a special respin feature called the Cloning Pod. This feature is triggered when a winning combination occurs on the reels, cloning the symbols in the pod beside them and throwing them back on the reels, possibly creating another win.
The Invaders from the Planet Moolah from WMS, now known as Light & Wonder, gives players a humorous take on the classic alien invasion theme. It’s not one of the usual sci-fi themed slots you’ll find at an online casino; it’s a fun slot where the aliens are cows from Planet Moolah.
The slot has the common 5×3 game grid with cows piloting flying saucers and hovering above the reels, which come with the cascading feature. There are 25 lines in the game and multiple fun features, including a wild symbol and up to 50 Free Spins in the bonus game.
Another unique online casino slot with a creative take on the usual alien theme is Cosmic Fortune by NetEnt. This 8-bit style slot has a nostalgic, retro style where players are invited to go on a space adventure chasing evil UFOs.
Cosmic Fortune is a low volatility five-reel slot with 15 paylines and modern features, including wild symbols, Free Spins, and a progressive jackpot feature that can be triggered if you collect three marbles in the jackpot come.
The galactic theme is masterfully presented with a unique art style, great graphics, and subtle sound effects.
Area 51, by Concept Gaming, is a 5×5 cluster slot with 3125 winlines. The game has a 5-reel, 3-row video slot with 30 adjustable paylines. Like most space slots, the game has a futuristic look, mysterious weapons, and unique characters.
The game gives players a sneak peek into the imagined lives of aliens and the scientists who study them. It’s also inspired by the infamous secrecy surrounding the Nevada air base known as Area 51. Like most games on the list, it has special features, including a Free Spins bonus and a bonus game.
Galactic Streak is a low volatility slot by Playtech with a typical cosmic theme and mesmerising visuals. It’s one of the most minimal slots in our online slot list, appealing to players who like a mix of bonus features with straightforward gameplay.
Various planets and galaxies make up the symbols of the Galactic Streak slot, comprising a 4×4 game grid with 20 fixed paylines. One of the unique mechanics of this slot is that winning combinations pay in all directions, including top to bottom and vice versa, whereas in most slots online, symbols only pay from left to right.
Some special features included to give players an out-of-this-world experience are the wilds, scatters, multipliers, and the Galactic Free Games bonus round.
Event Horizon from the provider Betsoft isn’t one of the typical online casino slots in this category. Blending a futuristic, sci-fi atmosphere with classic slot symbols like bars, bells, and juicy cherries, Event Horizon creates a unique game experience.
The slot has the usual five-reel, three-row game grid with 243 ways to win on each spin. Planet Earth is the game’s wild symbol, and there’s also a special feature called the Sync Reels. The feature is triggered if two or three reels randomly sync and can expand to all five reels, significantly increasing the winning potential.
The game’s cosmic backdrop and the retro sound effects make for an unusual combination, and players looking for something different will definitely like Event Horizon.
The Final Frontier is a Star Trek-inspired slot from Merkur Gaming. Space exploration meets exciting bonus rounds in this 5×3 online slot. Like most casino online slots, it has 10 fixed paylines and various special symbols.
These include the wild symbol that can replace regular ones to form a winning combination and the scatter symbol that can trigger the bonus round. Besides fun bonuses, the game’s stunning visuals and playful character designs make it an enticing game for slot fans.
The Mars Attacks slot from Blueprint Gaming is one of the most feature-packed alien slots online, making it highly engaging and entertaining to play. Based on the cult classic movie from 1996, Mars Attacks is a great branded slot with a 5×3 setup and up to 3125 winning ways.
The Martian Modifiers are active on each spin and randomly awarded different features during the base game. There’s also the Alien Invasion gamble bonus and the chance to win the Jackpot King progressive jackpot.
For casino gamblers who like to play slots online with a fun, cartoonish atmosphere, the popular Reactoonz slot series from Play’n GO is highly recommended. Some of the best titles in the series include Reactoonz, Reactoonz 2, Gigantoonz, and Dr Toonz.
Each slot in the Reactoonz series offers different features and mechanics, but they all feature playful aliens and a vibrant cosmic theme. They also have unique slot features like cascading reels, multipliers, and Free Spins.
Online casino sites provide the best platform to enjoy alien and sci-fi slot machines for real money. Below are the top three reasons to play these games at a casino online:
If you’re looking to play the best online slots with alien themes, Betiton offers a fantastic platform. With a wide range of games, secure payment options, and an excellent customer service team, it’s the perfect place to embark on your intergalactic journey.
Betiton is licensed and regulated by the MGA and the UKGC, making it a trustworthy and reliable gaming platform. The casino also gives you access to over 1,000 games, including alien and sci-fi slots, classic slots, classic casino games, and instant win games.
Alien-themed slots offer a captivating mix of stunning visuals, immersive soundtracks, and exciting gameplay features. Whether chasing cosmic treasures or engaging with quirky extraterrestrial characters, these games provide endless entertainment if you play at a reliable and legitimate online casino like Betiton.
