The 3rd party operators featured on this page are featured on a non-commercial basis with no commission arrangements in place. 21+. Gambling Problem? Call 1-800-GAMBLER.

HomeGamesSci-fi-Themed Games Free Play

Sci-fi-Themed Games Free Play

Sci-fi-Themed Games. ✅ Free casino games and slots. ✅ No download, no registration required. ✅ Play for free in demo mode.
1Advanced filterSlots58Roulette0Blackjack0Video poker0Bingo0Baccarat0Live games0Craps and dice0Keno0Scratch cards0Other games0Crash games0
58 games found
Sort
Invading Vegas Revenge on Mars
Play for Free
Loading preview...
Invading Vegas Revenge on Mars by Play'n GO
Super Elements
Play for Free
Loading preview...
Super Elements by Fa Chai Gaming
War of the Universe
Play for Free
Loading preview...
War of the Universe by Fa Chai Gaming
Virus Mania
Play for Free
Loading preview...
Virus Mania by Win Fast
Mad Slot
Play for Free
Loading preview...
Mad Slot by Smartsoft Gaming
Ammit Arctic Freeze Power Combo
Play for Free
Loading preview...
Ammit Arctic Freeze Power Combo by Wishbone
Fail Alien
Play for Free
Loading preview...
Fail Alien by Merkur Gaming
Bounty Invaders
Play for Free
Loading preview...
Bounty Invaders by Esa Gaming
Granny Disco Frenzy
Play for Free
Loading preview...
Granny Disco Frenzy by PearFiction Studios
Metal Frontiers
Play for Free
Loading preview...
Metal Frontiers by Mascot Gaming
1X Riot
Play for Free
Loading preview...
1X Riot by Mascot Gaming
Armageddon 10k Ways
Play for Free
Loading preview...
Armageddon 10k Ways by Reel Play
Slotout
Play for Free
Loading preview...
Slotout by Gamebeat
Anime Mecha Megaways
Play for Free
Loading preview...
Anime Mecha Megaways by Pragmatic Play
Brute Force (Nolimit City)
Play for Free
Loading preview...
Brute Force (Nolimit City) by Nolimit City
Zombie Outbreak
Play for Free
Loading preview...
Zombie Outbreak by PGsoft (Pocket Games Soft)
Alien Wins
Play for Free
Loading preview...
Alien Wins by RTG Slots
Stargate Ra’s Trail
Play for Free
Loading preview...
Stargate Ra’s Trail by Light & Wonder
Author: Juraj Torok Last updated: 01 Dec 2025
58 games found based on your search. Showing 41 - 58
Filter
Sci-fi
Clear all filters
Game Type
Slots, Roulette, Blackjack, Video poker, Bingo, Baccarat
Slots 58 Roulette 0 Blackjack 0 Video poker 0 Bingo 0 Baccarat 0
Live games 0
All 0 Live shows 0 Live baccarat 0 Live bingo 0 Live blackjack 0 Live dice games 0 Other live games 0 Live poker 0 Live roulette 0
Craps and dice 0 Keno 0 Scratch cards 0 Other games 0 Crash games 0
Game Provider
Realtime Gaming, NetEnt, Rival, Nolimit City, Betsoft Gaming
Realtime Gaming 0 NetEnt 0 Rival 0 Nolimit City 2 Betsoft Gaming 0 TaDa Gaming 0 Pragmatic Play 4 Playtech 0 Novomatic 0 Apricot (Microgaming) 0 IGT 1 ELK Studios 3 Big Time Gaming 0 Scientific Games 0 Yggdrasil Gaming 1 Tom Horn 1 Quickspin 0 Evoplay 0 Push Gaming 0 Eyecon 0 Evolution Gaming 0 Saucify 0 SA Gaming 0 BGaming 1 GameArt 0 Play'n GO 3 Red Tiger Gaming 1 Endorphina 1 Bally 0 Barcrest 0 WMS 0 Amaya 0 Blueprint Gaming 0 Wazdan 0 PariPlay 0 Habanero 0 Lightning Box 0 Playson 0 Nextgen Gaming 0 iSoftBet 0 Merkur Gaming 1 Nektan 0 Amatic 0 Red Rake Gaming 0 Thunderkick 0 Leander Games 0 Spinomenal 1 Rabcat 0 Ezugi 0 Igrosoft 0 1X2 Network 0 Booming Games 0 2By2 Gaming 0 Iron Dog Studio 1 Realistic Games 0 High 5 Games 1 Genesis Gaming 0 Ash Gaming 0 NeoGames 0 Belatra Games 0 Booongo (BNG) 0 MrSlotty 0 Relax Gaming 0 edict 0 MultiSlot 0 TOPTrend Gaming 0 Greentube 0 Genii 0 Arrow's Edge 0 Ainsworth 0 Gaming1 0
Game Theme
5-Reels, 6-Reels, Sweets, Mythology, Ocean and sea, Western
10-Reels +5 3-Reels +1,488 4-Reels +234 5-Reels +14,808 6-Reels +1,872 7-Reels +185 8-Reels +44 Adventure +349 Aliens +100 American +256 Animals +1,689 Anime +49 Arabian +141 Arcade +121 Asian +1,419 Astrology +69 Aztecs +284 Cards +289 Cars +124 Christmas +450 Classics and retro +288 Comics +147 Crime +336 Earth Day +16 Easter +74 Egypt +881 Fairy tales +228 Fantasy +93 Farm and Garden +99 Fireworks +28 Fishing +243 Food +348 Fortune +590 Fruits +2,426 Gangsters +95 Gems and diamonds +482 Gods +320 Halloween +126 History +199 Holiday +335 Horror and scary +481 Irish +374 Japan +448 Jungle +215 Knights and Dragons +68 Love and romance +115 Magic +315 Medieval +261 Megaways +386 Mexico +145 Military +130 Mining +157 Money and wealth +533 Movies and tv +180 Music +255 Mythology +772 Nature +825 Ninja +63 Ocean and sea +541 Pachinko +2 Pirates +297 Qatar World Cup 2022 +12 Relax +405 Samurai +48 Sci-fiSpace and galaxy +174 Sport +332 Summer +124 Super heroes +48 Sweets +301 Technology +150 Vampires +9 Vikings +152 Western +306 Winter +310 Winter Olympics +5
Game Features
Filter by available features
Double-up option 8 Configurable lines 0 Jackpot games 10 Bonus Buy 2
Other
Other filters
Featured games 2 Reviewed games 3 Released last month 0
Payout System
Winlines, any way wins, pay anywhere, etc.
Classic winlines 30 Cluster pays 7 Pay anywhere 4 Any ways wins 15 Other 0
Winlines
1
500000000
Reels and Rows
Filter by reels and rows
Number of reels
1
50000
Number of rows
1
50000
Return to Player
Filter by RTP percentage
Return to Player
50%
100%
Clear all Filter (58)
Sci-fi-Themed Games | Play Free Casino Games and Slots
Top pages
Trending pages
Casino Guru
About us
Casino Guru Academy
null

Free professional educational courses for online casino employees aimed at industry best practices, improving player experience, and fair approach to gambling.

Global Self-Exclusion Initiative
null

An initiative we launched with the goal to create a global self-exclusion system, which will allow vulnerable players to block their access to all online gambling opportunities.

Gamtegrity
null

A platform created to showcase all of our efforts aimed at bringing the vision of a safer and more transparent online gambling industry to reality.

Casino Guru Awards
null

An ambitious project whose goal is to celebrate the greatest and the most responsible companies in iGaming and give them the recognition they deserve.

Play responsibly and in moderation.

Casino.guru is an independent source of information about online casinos and online casino games, not controlled by any gambling operator. All our reviews and guides are created honestly, according to the best knowledge and judgement of the members of our independent expert team; however, they are intended for informative purposes only and should not be construed as, nor relied upon as, legal advice. You should always make sure that you meet all regulatory requirements before playing in any selected casino. Copyright ©2026

Casino Guru in other languages
Select language
Forum_alt
Join the discussion on our Forum and meet casino players from all over the world
Trustpilot_flash_alt
What’s your opinion on Casino Guru? Share your feedback

Follow us on social media – Daily posts, no deposit bonuses, new slots, and more

Subscribe to our newsletter for no deposit bonuses, free tournaments, new slots, and more.