Top Free Sci-Fi Games for PC and Browser In 2025!

72 free-to-play Sci-Fi games found in our games list!
Warframe
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FREE
Crossout
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FREE
Star Trek Online
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FREE

Fortnite
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FREE

Fortnite

A free-to-play, standalone mode of Epic Game's Fortnite.

Marvel Rivals
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FREE

Marvel Rivals

A free-to-play superhero team shooter from NetEase.

Valorant
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FREE

Valorant

Test your mettle in Riot Games’ character-based FPS shooter Valorant.

Dark Orbit Reloaded
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FREE

Dark Orbit Reloaded

A browser-based 3D space-combat MMO with a massive playerbase!

Once Human
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FREE

Once Human

A post-apocalyptic open-world survival game from Starry Studio.

Crossout
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FREE

Crossout

A post-apocalyptic MMO vehicle combat game!

Phantasy Star Online 2 New Genesis
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FREE

Phantasy Star Online 2 New Genesis

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

Halo Infinite
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FREE

Halo Infinite

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

Destiny 2
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FREE

Destiny 2

A free-to-play multiplayer Sci-Fi MMOFPS from Bungie.

Strinova
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FREE

Strinova

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

Paladins
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FREE

Paladins

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

Skyforge
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FREE

Skyforge

A impressive Free to play MMORPG where you can become a god!

Warframe
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FREE

Warframe

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

Pocket Starships
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FREE

Pocket Starships

A free-to-play cross-platform space combat MMO from SPYR games.

Phantasy Star Online 2
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FREE

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
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FREE

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!

Starborne: Frontiers
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FREE

Starborne: Frontiers

A tactical autobattler set 400 years in the future.

Robocraft
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FREE

Robocraft

A free-to-play MMO sandbox building game!

Stormgate
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FREE

Stormgate

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

Star Trek Online
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FREE

Star Trek Online

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

Warface
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FREE

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
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FREE

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
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FREE

Spiral Knights

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

Splitgate: Arena Warfare
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FREE

Splitgate: Arena Warfare

A free-to-play multiplayer shooter developed and published by 1047 games.

Brink
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FREE

Brink

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

MechWarrior Online
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FREE

MechWarrior Online

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

Alien Swarm: Reactive Drop
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FREE

Alien Swarm: Reactive Drop

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

Apex Legends
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FREE

Apex Legends

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

Dino Storm
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FREE

Dino Storm

A free-to-play 3D MMO with cowboys, dinosaurs, and laser guns.

StarColony
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FREE

StarColony

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

Return Alive
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FREE

Return Alive

A free-to-play top-down tactical shooter.

Spectre Divide
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FREE

Spectre Divide

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

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