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Sci-Fi Browser Games

Prosperous Universe

1 Star2 Stars3 Stars4 Stars5 Stars (7 votes, 2.71 out of 5)
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Make your fortune and become an outer space tycoon in browser-based free-to-play economic simulation Prosperous Universe!

Mad World

1 Star2 Stars3 Stars4 Stars5 Stars (24 votes, 3.96 out of 5)
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Mad World is a free-to-play post-apocalyptic HTML5 MMORPG designed by Jandisoft with an emphasis on survival and portability.

Star Trek: Alien Domain

1 Star2 Stars3 Stars4 Stars5 Stars (5 votes, 3.80 out of 5)
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Star Trek: Alien Domain is a free-to-play sci-fi strategy game played in a web browser. The game features a new Star Trek story, dozens of new starships and alien species.

World War Online

1 Star2 Stars3 Stars4 Stars5 Stars (7 votes, 3.57 out of 5)
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Take on the world in World War Online, a free-to-play strategy browser game that puts you in command of a modern military arsenal.

Hero Zero

1 Star2 Stars3 Stars4 Stars5 Stars (14 votes, 3.64 out of 5)
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Become a superhero and fight for truth, justice, and the fanciest underpants in Hero Zero, a free-to-play browser-based MMORPG from Playata!

RoboManiac

1 Star2 Stars3 Stars4 Stars5 Stars (3 votes, 4.00 out of 5)
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Free-to-play browser RoboManiac borrows from simulation, sports, and role-playing games to create a unique experience you can play against people from around the world.

Pocket Starships

1 Star2 Stars3 Stars4 Stars5 Stars (8 votes, 3.63 out of 5)
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Blast off into adventure in Pocket Starships, a free-to-play browser MMORPG with fast-paced starship-fighting action!

Galaxy Warfare

1 Star2 Stars3 Stars4 Stars5 Stars (18 votes, 4.17 out of 5)
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Explore the galaxy and fight for your faction in Galaxy Warfare a free-to-play browser based MMORPG that puts you in command of your own ship and challenges you to find your way in a vast, unforgiving galaxy.

DarkOrbit Reloaded

1 Star2 Stars3 Stars4 Stars5 Stars (6 votes, 3.33 out of 5)
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Take part in huge intergalactic battles and take on the whole galaxy in DarkOrbit, the free-to-play browser-based space combat MMO from Bigpoint -- now in 3-D!

AD2460

1 Star2 Stars3 Stars4 Stars5 Stars (68 votes, 3.93 out of 5)
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Conquer the galaxy in AD2460, a free-to-play browser based MMO strategy title that puts you in control of a star-spanning empire bent on domination through any means necessary.

Star Colony

1 Star2 Stars3 Stars4 Stars5 Stars (32 votes, 3.53 out of 5)
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In StarColony, a free-to-play browser game from Eiyland LLC, you'll settle a new world and build up your colony from scratch, exploiting the land and battling your rival colonists for resources.

Soldiers Inc.

1 Star2 Stars3 Stars4 Stars5 Stars (46 votes, 2.20 out of 5)
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In Soldiers Inc., you take command of a military base in war-torn Zandia, competing with other military commanders to bring in the most profit for your client.
Chrono Wars 12

Chrono Wars

1 Star2 Stars3 Stars4 Stars5 Stars (26 votes, 3.88 out of 5)
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PLAY NOW About the game: Title: Chrono Wars Status: Beta Graphics: 3D Genre: MMORPG Developer: FancyBeans Publisher: Narvalous Chrono Wars sends players on an epic journey through space and time, doing battle with the Phantom Armies sent to our history to steal time itself. With six different eras in history to...

TDP5 Arena 3D

1 Star2 Stars3 Stars4 Stars5 Stars (6 votes, 4.17 out of 5)
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PLAY NOW About the game: Title: TDP5 Arena 3D Status: Released Graphics: 2D/3D Genre: FPS Developer: Javelin OU Publisher: Javelin Mixing platform mechanics, robust RPG progression, and shooter action, Javelin's TDP5 Arena 3D offers a unique gaming experience. You can play in a Flash window for quick and easy access or...
Total Domination 1

Total Domination

1 Star2 Stars3 Stars4 Stars5 Stars (43 votes, 2.70 out of 5)
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Total Domination is a free-to-play 2.5D browser MMORTS set in a futuristic wasteland. Players can form alliances, trade supplies and resources, even send reinforcements to each other. Choosing your allies carefully can be the difference between victory and defeat.
FreeFall Tournament 2

FreeFall Tournament

1 Star2 Stars3 Stars4 Stars5 Stars (179 votes, 4.69 out of 5)
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FreeFall Tournament is a free to play 3D browser based third-person shooter by Free Range Games. In FreeFall players can choose from 8 different classes each equipped with unique abilities and weapons.
Command Conquer Tiberium Alliances

Command and Conquer: Tiberium Alliances

1 Star2 Stars3 Stars4 Stars5 Stars (65 votes, 3.82 out of 5)
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Command and Conquer Tiberium Alliances is a military sci-fi browser-based MMORTS by EA. Part of the Command & Conquer franchise, players choose between two opposing factions, Global Defense Initiative (GDI) and Brotherhood of Nod (NOD). In the war-torn landscape, the GDI and Nod battle over the valuable resource, Tiberium
Steel Legions 1

Steel Legions

1 Star2 Stars3 Stars4 Stars5 Stars (40 votes, 4.28 out of 5)
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Steel Legions is a free to play 3D strategy browser game from Splitscreen Studios, where four factions struggle for domination. It combines great 3D visuals with accessible, fast-paced PvP (player-versus-player) action. You take control over a mechanical, steam-driven combat vehicle in an alternative history...