Best sci fi-themed online slots and free sci fi slot demos

SCI FI Online Slots – Ranked List, Free Demos & Best Casinos

If you're looking for the top-rated sci fi-themed slots, you've come to the right place! Our updated CGSCORE ranking highlights the best sci fi slots online, from classic adventures to modern sci fi bonus games. Play free demos to explore the gameplay risk-free and learn the mechanics at your own pace — no deposit needed.

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Ready to move beyond free demos? Find safe and trusted online casinos offering sci fi slots and claim exclusive bonus deals from our recommended real-money sites. Whether you're chasing big wins, bonus features, or immersive sci fi adventures, these top-tier casinos deliver the ultimate sci fi-slot experience.

 Top SlotsNew SlotsUpcomingHigh RTPBonus BuyMegaways Top Free sci-fi Slots Sort by: Max Win - RTP - Rating - Release Crystal Sun
CGSCORE 63
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CGSCORE 68
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RTP: 96.65%
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CGSCORE 76
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CGSCORE 69
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CGSCORE 68
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CGSCORE 59
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RTP: 96.01%
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CGSCORE 61
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RTP: 96.7%
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CGSCORE 60
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Max Win: 200x
RTP: 95.74%
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CGSCORE 62
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RTP: 96.5%
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CGSCORE 86
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RTP: 96.51%
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CGSCORE 62
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Max Win: 14000x
RTP: 95.45%
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CGSCORE 68
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Max Win: x
RTP: 96.24%
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CGSCORE 72
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Max Win: 10000x
RTP: 96.9%
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CGSCORE 62
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Max Win: 2400x
RTP: 96.4%
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CGSCORE 57
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RTP: 96.1%
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CGSCORE 53
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Max Win: 500x
RTP: 97.87%
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CGSCORE 65
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Max Win: 9800x
RTP: 96.9%
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CGSCORE 66
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Max Win: 2950x
RTP: 96.62%
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CGSCORE 80
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Max Win: 18566x
RTP: 96.69%
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CGSCORE 68
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Max Win: x
RTP: 97.05%
 Space Race
CGSCORE 59
Playn Go Space Race
Max Win: 10657x
RTP: 94.23%
 Elements
CGSCORE 68
NetEnt Elements
Max Win: 1500x
RTP: 96.02%
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CGSCORE 74
NetEnt Starburst
Max Win: 800x
RTP: 96.09%
 << Prev 1 2 3 4 5 6 7 Back to top Play SCI FI Slots for Real Money Here ⬇
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