Space Slots - Icon Space Slots

Science fiction is a popular genre in books, movies and TV series, so why not slot machines as well? One of the top online slot themes, there’s no escape like being able to rocket away from Earth for a little while. The allure of outer space and unknown galaxies is fun and exciting.

NetEnt, one of the largest gaming developers, released the Starburst slot game in 2012, and it was a hit. But that out-of-this-world game is just one example of many space slots available. Below, I am  going to talk about the 10 most popular slot games on the market (the stars of the show, we reckon) and what you can expect when you play.

Writers
Chris Taylor
Review by

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Best Space Slots Slot Sites

If you’re looking for the best space slots at slot sites and online casinos, we have your back. Online-Slot.co.uk has checked the sites which offer these games are licensed (by the UK Gambling Commission) and safe for you to use. We’ve also verified that the payment options are secure as well.

  1. Duelz Casino
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    100% Bonus up to £100 + 100 Free Spins
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    T&Cs Apply 18+ new players only. Minimum deposit: £20. Maximum £100 bonus. Max bet with an active bonus: £2. Wagering requirement 100% match bonus: 30 times sum of deposit + bonus. Max redeemable from welcome bonus: £500. 100 Free Spins are given out 20 per day on Book of Dead for 5 days in a row, log in each day is required. Max Free Spins winnings: £100. Winnings from Free Spins are credited as bonus money with a wagering requirement of 45 times. Free Spins expire after 3 days. Some games may not be played with a bonus. Games may contribute differently when wagering a bonus. Play Responsibly! www.begambleaware.org. #ad
  2. Casumo Casino
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    T&Cs Apply 18+. New customers. Opt-in required. 20 Bonus Spins on “Sahara Riches Cash Collect” at 10p per spin and 100% Deposit Bonus up to £100 on first deposit (payment method and play restrictions apply). Min. deposit £10. 30x wagering for Bonus Spins and Deposit Bonus (game weighting applies). Max. £5/spin or £0.50/line. 30 days expiry. Please gamble responsibly • www.begambleaware.org #ad
  3. Playzee Casino
    4.5/5
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    100% Bonus up to £300 + 150 Zee Spins
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    T&Cs Apply 18+ New players only. Min Dep £20. Max Bonus Bet £5. Offer: 100% of 1st deposit up to £300 + 150 Zee Spins on Starburst (first 60 credited on 1st deposit; rest credited at 07:00GMT at 10/day) + 500 Zee Points. Spins expire after 23:59GMT on day they’re credited. Winnings from each set of spins capped at £50 & credited as bonus. Bonus funds expire after 30 days, are separate to Cash funds, & subject to 35x wagering of bonus + deposit amounts. Affordability checks apply Full Terms Apply BeGambleAware.org #ad
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    T&Cs Apply 18+. New players only. 100% bonus on first deposit up to £50 & 50 Bonus Spins (30 spins on day 1, 10 on day 2, 10 on day 3) for Rich Wilde and the Book of Dead slot only. Min first deposit of £10. Max bonus £50. Max bonus bet £5. Max bonus cash-out £250. 40x wagering requirements. Bonus expiry 30 days. Bonus spins expiry 2 days. Game restrictions apply  Further Terms Apply #ad
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    T&Cs Apply 18+ begambleaware.org, T&Cs apply. New reg only. Opt in & deposit £10, £25 or £50 within 7 days & further 7 days to wager cash stakes 35x to unlock reward (£50 on 2 deposits). 3 day exp. Wagering/game contributions vary. 25 wager-free spins x10p to added to Big Bass Splash with each qualifying deposit, 3 day expiry. #ad

 

Best 10 Space Slots

Once the admin side of the check is done, we move onto the fun side (the space slots). There are 10 excellent options listed below which will get your booster packs firing on full blast. Let’s check them out.

  1. Starburst: Released in 2012 by NetEnt, this game has an RTP of 96.09% and low volatility. With 5 reels, 3 rows, and 10 paylines, this is a true classic game. There are several exciting features, including Win Both Ways and an expanding Starburst Wild. This exciting slot comes with arcade-like effects with blasts of light, flashing text and some explosive sounds too. It’s quite a rush. Playable from 10p per spin, it comes with 500 x bet max wins. Starburst is one of the most popular slots in the world, and even though it was released in 2012, it’s still widely played today.
  2. Reapers: Another excellent space slot is the next on our list, Reapers by Print Studios. Reapers are semi-automatic drones which collect energy cells in order to progress through the stacked symbol grids blocking the entrance of the main building. Exciting right? It gets better. With an RTP of 96.47%, it can be spun from 25p a spin and has 20,000 x bet max wins. The hit frequency rate is 25.02% and the volatility is 5 out of 5 which is played on an 8×8 reel set.
  3. Star Clusters Megaclusters: This space slot by Big Time Gaming is played on a 4×4 grid with Cluster Pays. BTG has reinvented the Cluster Pays genre with this game, and it is the first in the series to use the Megaclusters format. Offering free spins with up to 256 symbols and Gold Wild Multipliers, it can be played from 20p a spin. It also comes with a high 96.54% RTP rate and max wins of 23,960 x bet.
  4. Space Donkey: High volatility, Nolimit City released this game in 2023. With an RTP of 96.07%, Space Donkey is about a species-confused donkey which gets visited by aliens. The donkey decides to fight back. He destroys hordes of aliens and keeps all their gold. Offering a 27.68% hit frequency rate, the max win is 14,949 x your total bet.
  5. Space Miners: The next game on our list is a fun intergalactic adventure with Martians. They hop from planet to planet and mine whatever riches they can find. Powered by Relax Gaming, it’s played on 6 reels with 729 ways to win from 10p a spin. With a 96.47% RTP rate, you can destroy blocker tiles and grow the grid for up to 1 million ways to win. It has free spins and 50,000 x bet max wins.
  6. Reactoonz: Get ready to try out a sequel to Energoonz from Play ‘n GO. The leader is Gargantoon, who is the biggest ball of energy. Reactoonz are cute animations with bright colours, which makes gameplay fun and exciting. Played on a 7×7 grid with Cluster Pays, the minimum bet is 20p a spin. It comes with meters which you charge to trigger Quantum features. With random wilds and other extras, it has a 96.51% RTP rate and 4,570 x bet max wins.
  7. Max Megaways 2: With a different take on a space slot, this action-based game from Big Time Gaming is excellent for you action junkies. With 6 reels and up to 117,649 ways to win, the story is that Max has landed on the moon and, despite no gravity, is ready to take on evil. With 10 bonus features including free spins and enhanced free spins, it has a very high RTP of 96.64% and huge 147,620 x bet max wins.
  8. Starburst XXXtreme: Another title on our top 10 list is the sequel to Starburst. NetEnt wanted to make sure fans of Starburst had a similar experience in the sequel. Just like the original Starburst, XXXtreme has 5 reels and 9 paylines and can be played from 10p a spin. With a 96.3% RTP rate, it comes with multipliers up to 450x which can lead to 200,000 x bet max wins.
  9. Cygnus 4: ELK Studios presents Cygnus 4, in which players can come across rolling symbols, multiplier wilds, a bonus, and a super bonus game with 50,000 x bet max wins. Released in 2023 with a 94% RTP rate and high volatility, you can spin away from just 20p per spin. Offering a gravity-defying tumble-style avalanche win, which causes other symbols to fill the gaps, you get a new symbol drop with an added row. As long as you keep winning, this repeats until you reach 8 rows, after which it resets. While this one doesn’t have as high of an RTP, it looks like a fun game for intergalactic fans.
  10. Invaders Megaways: The last game on our top 10 list comes from WMS/Light & Wonder. With 6 reels and up to 1 million ways to win, you can play from 10p a spin. Offering plenty of extras, there are free spins with a special wild. It comes with 75,798 x bet max wins. With engaging graphics and green aliens, this one is solidly in the space slots category and should satisfy any science fiction fan.

Impact of NetEnt’s Starburst

One of the most popular online slots ever to be made, Starburst is a classic game which has inspired multiple other games, such as Slingo Starburst, Berryburst, Crystal Sun, and, of course, Starburst XXXtreme. One of its best features, and probably the main reason for its longevity and popularity, is its simple gameplay.

Players often want something quick and easy rather than a complicated game that is difficult to understand. I actually think that despite being released way back in 2012, it remains one of the most aesthetically pleasing games out there. Whatever the reasons for its success, it looks to be around for a long time to come and will probably continue to inspire other games.

Due to it’s popularity and simplicity, Starburst has become the focus for plenty of free spins offers, both no deposit and wager free.

Reactoonz Series

This series by Play ‘n GO is very popular. It includes the games Reactoonz, Energoonz, Reactoonz 2, Dr. Toonz, and Gigantoonz. It is visually bright with bold, exciting colours and has a fun storyline with some similarities to Mary Shelley’s Frankenstein.

When Play ’n GO created the storyline for Reactoonz, it probably couldn’t have guessed how popular it would become. The developer expanded the storyline with Dr. Toonz, and it has continued from there with great characters and graphics. It’s no wonder the series has become so popular.

Cygnus Series

The meaning behind the name is that Cygnus is one of the stars that make up the Northern Cross in the sky. ELK Studios chose the name because of the ancient connection to the pyramids in Egypt, which is the theme of the first game.

In the second game, they dropped the Egyptian connection and made the game into an observatory where you can see the night sky and the constellations (the connection to the first game). The third game takes place in an ancient Colosseum, which implies Ancient Roman influence. The fourth game is set in 18th-century London with a misty atmosphere typical of the ancient city.

The imagination of the different games in the series keeps it fresh with each new release. The graphics are clean and beautiful and go a long way to evoking the message they want to portray. It’s easy to see why these games have been so popular.

Summary

Science fiction is a popular genre, and as you can see from the popularity of these slots, it has a significant influence on games as well. Space slots will always have a place in the many games that are produced. Some of the first video games ever produced were based on a space theme, like Asteroids.

Many of us played games like that when we were kids, so there is a nostalgic draw to space slots. This is one of the reasons that Starburst has remained popular for so long.

We can expect to see many more games with a space theme joining the scene, but the ones I’ve mentioned will likely stay on the favourites list for years to come.

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