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The Best Sci-Fi Slots 2021 – The Top Games and Where to Play Them

Sci-Fi slots have been ever-present since the inception of online gambling. The genre has an other-worldly appeal and includes the games Apollo Rising and Cosmic Fortune.

Below you’ll find out the best Sci-Fi casinos including welcome bonuses and free spins. Seatbelts on and let’s jet around to find all the best Sci-Fi slot info. These are the best sites for playing Sci-Fi themed slots.

The Best Sci-Fi Slots Casinos 2021
Sci-Fi Slot Casino Bonus Sci-Fi Slots Rating Secure Link T&C’s
Wager £10get £50 Terminator 2 32 4.9/5 Play Here Full T&Cs apply. 18+. New Casino players only. Deposit required. Bet £10+ on qualifying games. 40x wager reqs (bonus only) on selected games. Accept Bonus within 14 days. Bonus valid for 30 days. Certain deposit types excluded. Player restrictions and T&Cs apply.
£50 Welcome Bonus Starburst 29 4.9/5 Play Here Full T&Cs apply. New customers only. Opt-in required. 100% Match Bonus up to £50 on 1st deposit of £10+. 50x bonus wagering applies as do weighting requirements. Debit Card & PayPal deposits only. This offer is valid for 7 days from your new account being registered.  Irregular gameplay may invalidate your bonus.
50 Bonus Spins Apollo Rising 20 4.8/5 Play Here Full T&Cs apply. First deposit only. 50 Free Spins on the Book of Dead slot. Minimum deposit £10. Each Free Spin valued at 10p. Prize Twister spins limited to 1 per player. OJO’s Rewards and Game Play policy applies.
120 Free Spins Welcome Bonus Cosmic Fortune 18 4.7/5 Play Here Full T&Cs apply. 18+. New depositors only. UK residents only. Minimum deposit £10. Free Spins are valid only on Starburst and expire in 7 days. 10x wagering apply. Certain deposit types are excluded.
£111 Refund Bonus+ 100 Free Spins Reactoonz 18 4.7/5 Play Here Full T&Cs apply. New customers only, min deposit £10, wagering 60x for refund bonus, max bet £5 with bonus funds. Free Spins bonus has x40 wagering. 23 free spins on registration (max withdrawal is £100). 100% refund bonus up to £111 + 77 spins on 1st deposit. No max cash out on deposit offers. Welcome bonus excluded for players depositing with Ecopayz, Skrill or Neteller.

Sci-Fi Slots – The Most Popular Games

The rise of Sci-fi online slots has not stopped since their first introduction in the early days of online casinos. The universal imagery is understood worldwide and as the genre is essentially fiction, then game developers have limitless amounts of content to draw upon.

These familiar scenarios mean the Sci-Fi themed slots are among the most popular with players. It gives the opportunity for games designer to create wonderfully imaginative games. They can use bright images and inventive characters to keep each game interesting.

Here are the most popular Sci-Fi slots online right now:

Players are drawn to sci-fi memes in slots for perhaps goofy aliens, outer space settings or even a dystopian future. As developers move away from themes such as fairytales, it seems likely that Sci-Fi slots games will dominate the landscape (millions of years) into the future.

The Sci-Fi Slot Games with the Best Payouts

When dealing with expected payouts for Sci-Fi themed slots, some players like to find out the Return to Player rate (RTP) of the particular game. This figure gives a rough guide to the expected theoretical returns after a game has been spun hundreds of millions of times.

The figure can sometimes be found next to the games title in any online casino. In some countries, like the UK, it is a legal requirement. We have done some work for you and compiled a list of the most popular Sci-Fi slots and ranked them in RTP order below.

1. Cosmic Fortune – 96.90% Payout Rate

Cosmic FortuneCute aliens and spaceships in this fun creation from NetEnt. Outstanding graphics and excellent animation. Read more in our Cosmic Fortune review.

2. Reactoonz – 96.51% Payout Rate

Reactoonz Reactoonz provides an out of this world experience to complement its unique features in this fun and immersive Play’n GO creation.

3. Starburst – 96.09% Payout Rate

Starburst Possibly one of the most recognizable games in the slot game universe. Starburst is a game of plenty of fun and features from NetEnt.

4. Terminator 2 – 96.00% Payout Rate

Terminator 2Fantastic 3D slot based on the film of the same name. Developed by Microgaming, this title offers an insight into the future. Read more in our excellent Terminator 2 review.

5. Apollo Rising – 92.56% Payout Rate

Apollo RisingColorful title featuring 100 paylines. Apollo Rising is a world of meteors, rockets and spaceships. This Sci-Fi themed game was created by IGT.

Some players take plenty of stock from these figures while others will not let a few percentage points get in the way of enjoying their favourite slot games. As said above, these figures are theoretical, not set in stone. Many players decide to play online slots with Sci-Fi elements based on the expected fun rather than a cold look at the RTP figure.

Other Great Slots Themes

Online games come in all manner of styles and themes. Sci-Fi slots are just one in a collection of slots themes, to immerse yourself in. The theme most like Sci-Fi is arguably fantasy themed slots. Here you will enter magical worlds and there will be possibly some crossover in the genres. Sci-Fi is essentially fantasy, after all.

Here are some other great slots themes that you can check out:

Bonuses for Sci-Fi Slot Games

When choosing a place to play Sci-Fi slots you will often receive a bonus as a new customer of a casino. Some will allow you to use the bonus funds to play straightaway on your Sci-Fi games of choice. Others may offer free spins which can be used on your favourite slot. Either way bonuses are an excellent way of increasing your initial funds in a casino.

The Best Bonuses at Sci-Fi Slots Casinos
Casino Bonus Offers Highlights Rating Secure Link T&C’s
Genesis 100% up to £100 + 300 Free Spins A Bucketload of Bonus Spins 4.8/5 PLAY HERE Full T&Cs apply. 18+. New players Only. £10 min deposit. £5 max bet using bonus. 40 x wagering applies. Bonus valid for 14 days. 30 Spins on Starburst games will be credited instantly + then 30 per day for 9 days. Free Spins valid for 72 hours from credit. Max Free Spins winnings £100. Skrill + Neteller excluded. Always refer to Bonus Terms - www.begambleaware.org.
Ladbrokes Wager £10 get £50 Ongoing Promotions for Members 4.7/5 PLAY HERE Full T&Cs apply. 18+. New Casino players only. Deposit required. Bet £10+ on qualifying games. 40x wager reqs (bonus only) on selected games. Accept Bonus within 14 days. Bonus valid for 30 days. Certain deposit types excluded. Player restrictions and T&Cs apply.
PlayOJO 50 Bonus Spins Trusted UK Casino 4.7/5 PLAY HERE Full T&Cs apply. First deposit only. 50 Free Spins on the Book of Dead slot. Minimum deposit £10. Each Free Spin valued at 10p. Prize Twister spins limited to 1 per player. OJO’s Rewards and Game Play policy applies.

“Always check the small print” is an oft used phrase and checking the terms and conditions is vital when signing up for a new online casino. These terms and conditions are always clearly stated so the player and the casino know exactly where they both stand in the event of a dispute.

It is possible one of your favourite Sci-Fi online slots is not included in any free spins offered by the casino. Some designate a specific game where the free spins are playable. Bonus funds are slightly different and once they are released you can usually play on a Sci-Fi game of your choice. See a full range of offers on our best casino bonuses page.

Conclusion – The Mystery and Fun of Sci-Fi Slots

The appeal of Sci-Fi slots essentially lies in the unknown. Just as we don’t know what’s out there, we don’t always know what to expect from a Sci-Fi themed slot. What will it bring us? What planet will we land on? Is there anyone else out there?

Basically Science Fiction themed slots are just good fun – generally with bright colours and easy to understand motifs. There is, of course, a vast galaxy of other games to consider and we recommend you take a look at our comprehensive slots section.

Other Interesting Slots Topics

Frequently Asked Questions

We hope the information above has not been alien to you but if you have further queries take a look at our FAQ section below where we have endeavoured to answer some of the most popular questions by readers. Many newbie questions about slots can be answered on our features page.

Why are so many online slots Sci-Fi themed?

So many online slots are Sci-Fi themed because the theme is universally recognized. Almost all cultures have the concept of aliens and ideas of what may lie outside our planet. Its inherent mystery also lends itself to Sci-Fi themes.

Where can I play Sci-Fi slots?

Almost all online casinos will feature a selection Sci-Fi slots. Check our list of recommended providers of the best of Sci-Fi content.

What are some Sci-Fi slots?

Cosmic Fortune, Reactoonz and Apollo Rising are three examples of Sci-Fi online slots. See our casino list of the best operators.

What are the most popular Sci-Fi slots?

Terminator 2, Starburst and Cosmic Fortune are probably the most popular Sci-Fi slots available. Some casinos offer a bonus when joining.