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Free sci-fi game downloads by genre
Here you can find and download for free the best sci-fi games, such as Project Xenoclone, Immortal Defense, Alpha Kimori Episode Two, Bookworm Adventures: Astounding Planet, Lifeline, and more.
Order the games by:
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!
Immortal Defense (Strategy games)
January 6, 2009
Is there anything that you'd sacrifice everything to defend? Explore the boundaries of your imagination and strategic skills in Immortal Defense!
January 6, 2009
Is there anything that you'd sacrifice everything to defend? Explore the boundaries of your imagination and strategic skills in Immortal Defense!
Sci-fi game 63 MB
Alpha Kimori Episode Two (Strategy games)
November 30, -0001
Two human factions are at war, and Rick’s best friend and girlfriend have been captured in the turmoil! Can Rick save Vanessa and Yuki before it’s too late? more…
November 30, -0001
Two human factions are at war, and Rick’s best friend and girlfriend have been captured in the turmoil! Can Rick save Vanessa and Yuki before it’s too late? more…
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!
Sci-fi game 20 MB
Sci-fi game 125 MB
Sci-fi game 677 MB
Greed: Old Enemies Returning
January 3, 2018
Dr. Goodwin's miracle cure is once again under threat in this haunting hidden object adventure! more…
January 3, 2018
Dr. Goodwin's miracle cure is once again under threat in this haunting hidden object adventure! 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 540 MB
Faraway Planets
March 31, 2020
Board the shuttle and embark on a space exploration adventure like no other in an exciting new time management game! more…
March 31, 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 609 MB
Rite of Passage: Embrace of Ember Lake
March 8, 2021
Your daughter’s uncanny gift draws the attention of a sinister organization! more…
March 8, 2021
Your daughter’s uncanny gift draws the attention of a sinister organization! more…
All sci-fi games are free to download, you can try and play all sci-fi games listed for free.