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Free sci-fi game downloads by popularity
Here you can find and download for free the best and most popular sci-fi games, such as Toy Defense: Sci-Fi, Cy-Clone, Twin Mind: Nobody's Here, Who Am I, Faraway Planets Collector's Edition, and more.
Order the games by:
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Sci-fi game 119 MB
Toy Defense: Sci-Fi (Arcade games)
February 10, 2015
Rally your army against the invading robots and experience the thrill of intergalactic warfare in this exciting new tower defense game! more…
February 10, 2015
Rally your army against the invading robots and experience the thrill of intergalactic warfare in this exciting new tower defense game! more…
Sci-fi game 149 MB
Cy-Clone (Shooting games)
November 30, -0001
In a sci-fi, high-flying Shooter game, you must use the enemy's own technology against them to save all of mankind. more…
November 30, -0001
In a sci-fi, high-flying Shooter game, you must use the enemy's own technology against them to save all of mankind. more…
Sci-fi game 1040 MB
Sci-fi game 181 MB
Who Am I (Hidden Objects games)
January 15, 2014
Who am I is an immersive hidden object adventure of an epic scale! Take the role of an undercover agent investigating strange sci-fi incidents in the city. more…
January 15, 2014
Who am I is an immersive hidden object adventure of an epic scale! Take the role of an undercover agent investigating strange sci-fi incidents in the city. more…
Sci-fi game 1312 MB
Faraway Planets Collector's Edition
March 10, 2020
Board the shuttle and embark on a space exploration adventure like no other in an exciting new time management game! more…
March 10, 2020
Board the shuttle and embark on a space exploration adventure like no other in an exciting new time management game! more…
Sci-fi game 937 MB
Esoterica: Hollow Earth (Mystery games)
January 8, 2014
The fabled land of Agartha awaits your discovery in Esoterica: Hollow Earth! Experience a sci-fi adventure that will take you to the depths of the Earth. more…
January 8, 2014
The fabled land of Agartha awaits your discovery in Esoterica: Hollow Earth! Experience a sci-fi adventure that will take you to the depths of the Earth. more…
Sci-fi game 125 MB
Global Defense Network (Arcade games)
January 26, 2005
A combination of a fast paced shooter and rhythm action game superbly synchronized in a Sci-Fi plot.
January 26, 2005
A combination of a fast paced shooter and rhythm action game superbly synchronized in a Sci-Fi plot.
Project Xenoclone (Strategy games)
September 7, 2006
Destroy thousands of merciless monsters as you try and uncover the secret of Project Xenoclone. It's one intensely unique 3D shooter experience!
September 7, 2006
Destroy thousands of merciless monsters as you try and uncover the secret of Project Xenoclone. It's one intensely unique 3D shooter experience!
Bookworm Adventures: Astounding Planet 
December 3, 2009
Help Lex save the world from mutants and robots in this time-traveling, vocabularious adventure! It's up to Lex to set things right!
December 3, 2009
Help Lex save the world from mutants and robots in this time-traveling, vocabularious adventure! It's up to Lex to set things right!
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All sci-fi games are free to download, you can try and play all sci-fi games listed for free.