Top Free Sci-Fi Games for PC and Browser In 2025!
78 free-to-play Sci-Fi games found in our games list!
Halo Infinite
For the first time ever, a free-to-play Halo experience is available in the form of Halo Infinite’s multiplayer.
Phantasy Star Online 2 New Genesis
The legacy of Phantasy Star Online 2 continues a thousand years later!
Spectre Divide
A 3v3 tactical shooter developed and published by Mountaintop Studios in partnership with former pro gamer shroud,
Dreadnought
A free-to-play combat flight simulator developed by Yager Development and published by Grey Box.
The First Descendant
A free-to-play third-person co-op looter shooter developed and published by Nexon.
War Robots: Frontiers
A multiplayer mech game set in a planetary system light years from Earth.
Apex Legends
A free-to-play strategic battle royale game featuring 60-player matches and team-based play.
Warface
A free-to-play multiplayer online FPS from Crytek, makers of the Far Cry and Crysis series of games.
Star Trek Online
A free-to-play, 3D, Sci-Fi MMORPG based on the popular Star Trek series.
SoulWorker
A free to play anime action MMO based on the popular anime of the same title.
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!
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.
Strinova
A third-person tactical shooter that features the unique mechanic of allowing players to switch between three-dimensional and two-dimensional forms.
Astro Empires
A text-based sci-fi strategy and diplomacy MMO Game in a persistent universe.
Warframe
A cooperative free-to-play third person online action shooter set in an stunning sci-fi world.
Darwin Project
A free-to-play 10-player battle royale game set just prior to an impeding ice age.
Unfortunate Spacemen
Unfortunate Spacemen is a co-op multiplayer game about Shapeshifting with a Co-op Story Mode, lots of objectives and more!