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Free sci-fi game downloads by size reverse
Here you can find and download for free the best and largest sci-fi games, such as Stranded in Time, Zarya - 1, Toy Defense: Sci-Fi, Alpha Kimori Episode Two, Project Xenoclone, and more.
Order the games by:
Sci-fi game 149 MB
Stranded in Time (Mystery games)
February 17, 2015
Venture beyond time and space in this classic adventure game that will take you out of this world! more…
February 17, 2015
Venture beyond time and space in this classic adventure game that will take you out of this world! more…
Sci-fi game 125 MB
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 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…
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!
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!
Mr. Robot (Puzzle games)
July 11, 2007
Adventure through a massive 3D starship with platform-jumping puzzle-solving, sci-fi adventure, RPG style battle games and more!
July 11, 2007
Adventure through a massive 3D starship with platform-jumping puzzle-solving, sci-fi adventure, RPG style battle games and more!
Sci-fi game 20 MB
Darkside (Arcade games)
December 26, 2007
The Krainian Empire has invaded our outer territories! Hop into your ArkLight X-52 and take the fight back to the enemy, one battle at a time!
December 26, 2007
The Krainian Empire has invaded our outer territories! Hop into your ArkLight X-52 and take the fight back to the enemy, one battle at a time!
All sci-fi games are free to download, you can try and play all sci-fi games listed for free.