Best Free Sci-Fi Games for PC and Browser in 2021!59 free-to-play Sci-Fi games found in our list!
A futuristic urban battle royale game with powerful hacks and unique weapons!
Test your mettle in Riot Games’ character-based FPS shooter Valorant.
Unfortunate Spacemen is a co-op multiplayer game about Shapeshifting with a Co-op Story Mode, lots of objectives and more!
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.
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.
Splitgate: Arena Warfare
A free-to-play multiplayer shooter developed and published by 1047 games.
A free-to-play strategic battle royale game featuring 60-player matches and team-based play.
A free-to-play combat flight simulator developed by Yager Development and published by Grey Box.
A free-to-play 4v1 sci-fi shooter.
A strategic collectible card game developed and published by Pegnio Ltd.
A re-imagining of Trion Worlds' sci-fi shooter Defiance.
A free to play anime action MMO based on the popular anime of the same title.
A free-to-play futuristic shooter published by Aeria Games.
Champions Of Titan
A free-to-play sci-fi MMORPG from IDC/Games.
A free-to-play episodic anime beat-em-up developed by Naddic Games and published by En Masse Entertainment.
A free-to-play, standalone mode of Epic Game's Fortnite.
A free-to-play tactical, turn-based dueling game developed and published by Bad Seed.
Quake Champions is a callback to the early days of the Quake IP, featuring the fast-paced action that made the IP popular over two decades ago.
A post-apocalyptic MMO vehicle combat game!
A 3v3 2D battle arena Developed by Ronimo games.
Alien Swarm: Reactive Drop
A free-to-play top-down tactical co-op expansion on the Alien swarm game and Source SDK.
A free-to-play team-based shooter developed and published by Hi-Rez Games, the creators of SMITE.
A free-to-play sci-fi themed collectable card game developed and published by ZiMAD inc.
UFO Online: Invasion
A free-to-play post-apocalyptic, turn-based tactical combat MMO developed by Bad Pixel.
A free-to-play browser-based MMO based on the popular anime Sword Art Online.
A Roguelike MMORPG with MetroidVania-style platformer gameplay! Castlevania and Metroid fans will love this game!
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 Cross-Platform free to play 2D sci-fi strategy MMO.
Metal War Online: Retribution
A high-speed multiplayer online concept car shooter game with racing elements!
A free-to-play PvP game that's a faithful adaptation of the popular MechWarrior strategy board games.
A impressive Free to play MMORPG where you can become a god!