Best Free Sci-Fi Games for Browser in 2021!9 free-to-play web-based Sci-Fi games found in our list!
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!
Star Trek: Alien Domain
A free to play browser based 2D strategy MMO set in the Stark Trek universe.
A free-to-play browser MMO strategy game that puts you in command of a rapidly growing city on a dangerous alien world.
A free-to-play cross-platform space combat MMO from SPYR games.
A free-to-play 3D MMO with cowboys, dinosaurs, and laser guns.
A free to play 3d browser based tank game with fast-paced tactical battles!
A browser-based 3D space-combat MMO with a massive playerbase!
A text-based sci-fi strategy and diplomacy MMO Game in a persistent universe.