Best Free Sci-Fi Games for PC and Browser in 2023!

Hop in your Arthurian legend inspired mech and compete your way to the top of the round table.

Big changes come to the Overwatch formula in this sequel...and so does PvE content, eventually.

Miss when that other hero shooter was 6v6? Well here you can do that AND wear sweet Mobile Suits!

Think MOBA meets soccer...got that in your head? Yeah, this is pretty much that.

Tower of Fantasy brings the MMORPG experience to PC and mobile with a F2P, splashy, anime-esque style.

Noah's Heart is an open-world action-adventure MMORPG game developed by Archosaur Games, the developers of Dragon Raja.

Dive into The Cycle, a free-to-play shooter from YAGER that blends competitive with cooperative gameplay.

Roller Champions tasks you and your team with holding a ball and skating laps around an arena as you dodge, duck, dip, dive, and dodge your way around the opposing team.

Space Punks is a free-to-play online co-op ARPG with a high enemy count looter shooter gameplay loop.

Step into the boots of a fresh Spartan and fight for galactic supremacy in free-to-play Halo Infinite Multiplayer

Defend the Planet Halpha against the threat of the DOLLS in F2P sci-fi MMORPG Phantasy Star Online 2: New Genesis! PSO2:NG is a remastered version of the original PSO2, with stunning new graphics and gameplay features.

Loot and shoot to your heart's content in Drifters Loot the Galaxy, a high-flying free-to-play shooter from Blind Squirrel Entertainment! Strap on your Driftpac and bring your hard-earned loot back to the dropship, but beware -- your opponents will try to relieve you of your spoils and claim it for themselves!

Jump into your mech and duke it out with the rest of the world in Super Mecha Champions, a free-to-play battle royale from NetEase. Your battlefield is the futuristic manga-inspired Alpha City, where you'll choose your ace pilot, select one of 10 mecha, customize it to your liking, and dash into furious combat!

Make new space friends and betray them all in Unfortunate Spacemen, a free-to-play shooter from New Blood Interactive. Complete objectives and hunt monsters in varied sci-fi environments ...

Valorant is Riot Games' free-to-play competitive 5v5 tactical shooter, where you'll need strong gunplay and timely use of abilities to come out on top. Choose your character and participate in matches up to 25 rounds long, taking turns as attackers and defenders.

Phantasy Star Online 2 is a free to play 3D MMORPG published by SEGA. Based on the original Dreamcast and Gamecube series, Phantasy Star Online 2 offers players the chance to visit detailed worlds and fight hundreds of interesting enemies.

Experience a fresh perspective on the battle royale experience with Darwin Project, a free-to-play game that takes the "game show" concept to a whole new level. As a contestant, you'll need to craft and kill your way to the top, as usual -- but the Show Director can make your life easier, or more difficult, and spectators can also weigh in, influencing the Director to aid or hinder players of their choosing.

Embark on a heroic quest to save humanity in Bungie's epic sci-fi MMO shooter Destiny 2, now free-to-play. Experience a wealth of content as a stalwart Titan, mysterious Warlock, or crafty Hunter, battling the enemies of humanity across the solar system.

Take on a new dimension in shooters with Splitgate: Arena Warfare, a free-to-play third-person shooter from 1047 Games. Frag your enemies from all angles through the clever manipulation of portals that let you zip around the battlefield like never before!

Apex Legends is a free-to-play battle royale set in the Titanfall universe and taking place after the events of Titanfall 2. Following the events of the Frontier War, the bloody Apex Games are in full swing, drawing in legends from all across the Frontier to fight for fame, glory, and riches!

Dreadnought is a sci-fi, multi-player space combat simulator from Yager. Players will take control of a variety of unique ships to combat opposing teams in a strategic environment.

Experience an epic sci-fi story as either rugged Raiders or invading Antagonists in Spacelords from MercurySteam! Formerly known as Raiders of the Broken Planet, Spacelords is a rework of the game, with all the action and cinematic story of the original, in free-to-play form.

Ironsight is a free-to-play shooter set in the 2020s, when two factions fight over the last of the planet's dwindling resources. Built from the ground up in the Iron Engine, Ironsight offers top-notch visuals and dynamic battlefields.

In Closers, a free-to-play fighting MMORPG, horrific creatures are springing from mysterious dimensional gates all around New Seoul, and it's up to you to stop them! Play as one of several psychic warriors, each with their own unique backstory and special abilities, and reclaim Korea!

Play Fortnite in a totally new way, in Fortnite: Battle Royale, the free-to-play spinoff of Epic Games' builder/shooter. Like other classic BR games, you'll be dropped into the world and forced to scavenge and survive.

Insidia is a free-to-play turn-based tactical strategy game that pits two teams of four against each other in a post-apocalyptic -- but still colorful -- battleground. Plot out your turns and then watch your strategies unfold (or go horribly awry).

Experience the new iteration of the world's first competitive online shooter in Quake Champions, a free-to-play title from id Software and Bethesda Softworks. Choose your champion from a diverse range of hardened killers, including old Quake favorites and newer heroes from id's other titles, such as Doom and Wolfenstein.

Trick out your ride and take to the post-apocalyptic roads for battle in Crossout, the free-to-play vehicular combat game from Gaijin Entertainment! Featuring a vehicle design system with endless customization and fast-paced, armor-crunching combat, Crossout offers high-octane excitement in brief and explosive matches.

Fight for the future and be totally awesome in Awesomenauts, a 2-D, side-scrolling MOBA that's even better now that it's free-to-play! Play online or local multiplayer in 3v3 matches or death matches.

Taking its cues from its predecessor, Alien Swarm: Reactive Drop is a free-to-play action shooter with a top-down view and tons of extra-terrestrial baddies to exterminate. Reactive Drop includes an extensive campaign mode, PvP, and a vast array of deadly weapons to mince and mangle with.

Explore the Red Planet and save humanity in Mars Tomorrow, a free-to-play browser simulation game from Gamefabrik and Bytro Labs.