The vastness of outer space calls out for you, offering supermassive cash prizes and unlimited entertainment! Check out the five best space-themed slot games in online casinos, and get ready to blast off! This comprehensive review of each game will prepare you for an adventure of a lifetime.
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Key Factors We Used to Rate the Best Online Slots
Each player visiting online casinos has unique preferences and chooses their favorite slots games by using different criteria. Our list of the top online slots set in space relies on these key points:
- The overall atmosphere, including graphics and sounds,
- Special features that drive extra cash-ins and boost players’ excitement,
- Maximum payout potential.
Finally, a stellar user experience wouldn’t be possible without cutting-edge technologies used by software providers. Industry giants like Pragmatic Play or Relax Gaming aim to surpass their most popular slots by continuously enhancing their mechanics. Combined with other essentials that grant immersive gameplay, high volatility and above-average RTP make their slots games in demand in all of the best online casinos worldwide.
Space Miners (Relax Gaming)
Relax Gaming, one of the top-ranked software providers for online casinos, released Space Miners on Feb 08, 2022. It instantly became one of the hottest space-themed online slots, thanks to its phenomenal design, vibrant colors, and thrilling gameplay.
It unites us with odd creatures on a mission to excavate space minerals. Royal blue shades overflow the deep-purple tones in the backdrop, as friendly-looking aliens float around the grid. The game’s soundtrack is playful and mysterious, guaranteeing an unforgettable interstellar trip!
This cosmic online slot machine has six reels and three to ten rows, making room for a staggering 1,000,000 pay lines! Its layout paves the way to mind-blowing profits, granting lucky players a maximum win of 50,000x the bet.
The slot’s high volatility, with a hit frequency of 20.18%, raises your chances of hitting the bonanza in no time! Plus, its default RTP of 96.47% puts Space Miners well above many slots games with similar themes.
Slot’s Special Features
This slot is brimming with cash-yielding symbols, with lower-paying ones represented as blue, purple, green, and yellow minerals. Landing six-of-a-kind grants you 0.4x the bet. Blue, green, orange, and red space miners portray the game’s higher-paying symbols, allowing you to collect up to 5x the bet. A cart packed with colorful minerals is the slot’s Wild symbol, while the spaceship acts as the Scatter.
Apart from the gorgeous graphics and insanely high profit potential, Space Miners is one of the most popular space-themed slot games in online casinos because of its special features:
- Wild Symbols – enable more winning combinations by replacing any paying symbol except the Scatter.
- Power Up Features – has four different functionalities, including Cross that destroys all blockers, Horizontal that eliminates all blockers horizontally of this symbol, Vertical that vanquishes all blockers vertically of this symbol, and 3X3, removing blockers in a 3 x 3 zone.
- Free Spins – activates by landing three or more Scatters, awarding at least six free spins.
- Bonus Buy – triggers the Free Spins feature by paying 100x the bet, increasing the default RTP to 97.14%.
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Reapers (Relax Gaming)
Relax Gaming went the extra mile to take you on another unparalleled intergalactic adventure with Reapers. This top-ranked provider added this compelling game to its impressive online slots portfolio on Dec 13, 2022, collecting praise across all online casinos in a snap.
The slot takes us to an energy facility from a distant constellation, introducing us to a flamboyant reaper searching for energy deposits. You’ll catch glimpses of a gray Sci-Fi-looking establishment popping up in the background when you hit the spin button, lurking behind the 8×8 grid. Modern, fast-paced music will set the mood for your celestial mission, accompanying the bright-colored symbols spilling over the reels.
This slot’s highly volatile, granting a 25.02%. Its default RTP is 96.47%, and the maximum payout goes up to 20,000x the bet.
Slot’s Special Features
Reapers represents one of the most dynamic slots games with a space theme, dropping paying symbols non-stop. The lower-paying ones include blue, green, purple, orange, and red aliens, promising payouts between 25x to 500x the bet upon landing 15-of-a-kind.
Its special features are:
- Barriers – activates the Bonus Game if 15 barriers are shut down,
- Reapers – destroy critters, gather energy, or overcome barriers,
- Collecting – activates after a cluster win, collecting symbols matching to the Reaper and producing new profits correspondingly,
- Charges – eliminate barriers,
- Special Abilities – offers five functionalities, including reapers generating an energy cell or collecting power from each other. It can slo transform symbols or add a 10x multiplier,
- Bonus Buy – grants from one to five Collectors upon paying from 3.4x to 425x the bet, raising default RTP.
This slot offers a Bonus Game that moves you through five levels with 75-symbol grids, enabling you to collect more energy cells and increase your total. Try Reapers in GemBet online casino now and shoot for the stars!
Spaceman (Pragmatic Play)
Pragmatic Play is one of the most popular names in the industry, delivering incredible slot games to top-rated online casinos across the globe. They launched Spaceman, a jaw-dropping online slot machine, on Mar 24, 2022. Its stunning visuals captivate players’ attention immediately, offering panoramic views of the vast, indigo cosmos. Radiant planets and celestial bodies will surround your grid, while adrenaline-charged sounds echo all over.
Moreover, Spaceman is one of the few interactive slots games that allows you to conspire with other players and diminish the loneliness of outer space! With no typical reels and rows or features, this space gem will still manage to stun you and spill a whopping 5,000x maximum payout!
Master the Spaceman’s Unique Gameplay
Spaceman is a crash game, kickstarting your space quest with a 1x multiplier and increasing it gradually as long as the astronaut flies. If the spaceman crashes and burns, you’d leave the casino empty-handed. However, if you pull the brakes on time, you’ll win a multiplier active at that precise moment.
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Astronaut (Red Tiger)
Red Tiger Gaming is one of the most sought-after providers in our trusted online casino in Singapore and other top-ranked casinos across the world. Their relatively new slot release from April 2023 has caused a commotion among space-theme game fans, taking them on a memorable Green Crystal chase through the cosmos. Astronaut is one of the most compelling online slots, set on a visually alluring spaceship.
The deep-colored background shows a flickering nebula behind the simple grid consisting of one reel and one row. And although this highly volatile slot has a 95.69% RTP, you could still win big time with a small stake. It allows you to collect a 48,000x maximum payout if your stars smile upon this journey.
Astronaut’s Levels & Prizes
This unique space-themed slot has only two extra features – but still surpasses all expectations with its multiple levels. Its features include the Golden Shield and Advanced Level, with the first protecting you from Red Crystals, while the latter unlocks a new world of opportunities to cash in if the Golden Shield breaks.
Advanced Level has 20 sub-levels, each multiplying your winnings from 1.1x to a maximum of 48,000x the bet. This growing prize ladder qualifies the slot as a “crash game,” dodging the well-known concept of features, and adding a fresh layer of excitement due to the uncertainty of the outcome.
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Visitors (ELK Studios)
ELK Studios is a famous software provider that keeps delivering sensational slot games to online casinos worldwide. They released Visitors on Oct 06, 2020, adding one of the most popular space-themed online slots to their vast game collection. This slot depicts a village plagued by unwanted guests from a distant galaxy. Its seemingly idyllic scenery, with emerald meadows and serene yards, is disrupted by familiar sounds of alien invasion movies.
The 5×5 grid is painted with shades of green and packed with odd-looking symbols that spell bizarre encounters. The slot’s 3,125 pay lines enable staggering winning combos, promising up to 10,000x max payout. This highly volatile slot has a 96.1% default RTP and a 22.6% hit frequency, taking you on a lucrative battle against little green men.
Slot’s Special Features
This extraterrestrial-themed game packs different paying symbols, with the lower-paying ones depicted as letters J, Q, K, and A, and number 10. Its higher-paying symbols are a fountain and four colorful buildings. The spaceship that has brought the aliens into the peaceful village and online casinos across the globe is the slot’s Scatter symbol.
The slot has three extra features that will help you beat the invaders and collect a massive payout include:
- The Big Beam – boosts a specific symbol to a 2×2 or 3×3 size,
- Abduction – unlocks multiplier respins, increasing every win by up to 15x,
- Alien Attack – places random Wilds across your grid, creating more winning combinations.
Finally, you can raise your total with Free Spins as part of the slot’s Bonus Game, triggered once three Scatters land on your reels.
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