Top Free Sci-Fi Games for PC and Browser In 2023!

A free to play fast action 3D sci-fi MMO where players control space fighters jets.

A free to play Action RTS with MOBA elements.

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

A free to play Sci-Fi MMO that has withstood the test of time.

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

A text-based sci-fi strategy and diplomacy MMO Game in a persistent universe.

A 3v3 2D battle arena Developed by Ronimo games.

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

A superhero MMORPG created by the same studio behind City of Heroes.

A free-to-play episodic anime beat-em-up developed by Naddic Games and published by En Masse Entertainment.

A post-apocalyptic MMO vehicle combat game!

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

A free-to-play 10-player battle royale game set just prior to an impeding ice age.

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

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

A free-to-play combat flight simulator developed by Yager Development and published by Grey Box.

Grab your Driftpacs and grappling hooks, it’s time to loot. Pick a character and dive into Blind Squirrel’s team-based shooter, Drifters Loot the Galaxy.

A 3D MMO Multi Virtual World Real Cash Economy Experience with RPG elements.

A free-to-play simulation game based on Bethesda Game Studios' popular Fallout franchise.

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

A 12v12 team shooter featuring mechs based on Arthurian legend.

Control your unique tank or robot in multiplayer arcade action!

A free to play fighting MMO, experience frantic battles up to 20 players.

A 6v6 team-based shooter based on the Gundam multiverse

A free to play online third person shooter with massive customization!

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

A free-to-play 2D multiplayer shooter developed by BitCake Studio and published by Versus Evil in which players play as customizable robots or "Dummys".

A free-to-play tactical, turn-based dueling game developed and published by Bad Seed.

A free-to-play futuristic shooter published by Aeria Games.

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

A high-speed multiplayer online concept car shooter game with racing elements!