Top Free Sci-Fi Games for PC and Browser In 2025!
72 free-to-play Sci-Fi games found in our games list!






Phantasy Star Online 2 New Genesis
The legacy of Phantasy Star Online 2 continues a thousand years later!

Halo Infinite
For the first time ever, a free-to-play Halo experience is available in the form of Halo Infinite’s multiplayer.


Strinova
A third-person tactical shooter that features the unique mechanic of allowing players to switch between three-dimensional and two-dimensional forms.

Paladins
A free-to-play team-based shooter developed and published by Hi-Rez Games, the creators of SMITE.


Warframe
A cooperative free-to-play third person online action shooter set in an stunning sci-fi world.


Phantasy Star Online 2
Welcome to ARKS, and elite task force searching dangerous planets for the corrupted Falspawn in Phantasy Star 2 Online, Sega’s popular, free-to-play sci-fi MMORPG.

Tower of Fantasy
Tower of Fantasy is a 3D open-world RPG, anime-style sci-fi MMO RPG game with unique characters and beautiful open vistas!



Stormgate
A free-to-play science fantasy real-time strategy game in which humans and robots defend Earth from alien forces.

Star Trek Online
A free-to-play, 3D, Sci-Fi MMORPG based on the popular Star Trek series.

Warface
A free-to-play multiplayer online FPS from Crytek, makers of the Far Cry and Crysis series of games.

Star Wars: The Old Republic
A 3D sci-fi MMORPG based on the popular Star Wars universe and brought to you by Bioware.

Spiral Knights
A massively multiplayer online role-playing game, battle monsters and collect treasures!

Splitgate: Arena Warfare
A free-to-play multiplayer shooter developed and published by 1047 games.

Brink
A free-to-play first-person-shoot developed by Splash Damage and published by Bethesda Softworks.

MechWarrior Online
A free-to-play PvP game that's a faithful adaptation of the popular MechWarrior strategy board games.

Alien Swarm: Reactive Drop
A free-to-play top-down tactical co-op expansion on the Alien swarm game and Source SDK.

Apex Legends
A free-to-play strategic battle royale game featuring 60-player matches and team-based play.


StarColony
A free-to-play browser MMO strategy game that puts you in command of a rapidly growing city on a dangerous alien world.


Spectre Divide
A 3v3 tactical shooter developed and published by Mountaintop Studios in partnership with former pro gamer shroud,