Top browser based games - Sci-Fi List 4

Join the fight between aliens and humanity in this sci-fi MMORPG.

Nebula 44 is a free MMORTS game that tries to blend web strategy and RTS genres, providing unique and exclusive gameplay! It is sci-fi themed and completely free to play.

Neurostaza is browser based, free to play MMORPG game set in postapocalytpic world.

Evolution is a free strategy game, pitting players together in a non-stop battle for universal domination. Play right in your web browser, from anywhere in the world -- no need to download or install...

Free browser OGame-family space strategy on Hive. Uni 1 long room + seasonal unis. Frontier systems to claim — neighbors welcome.

It’s the year 2627; five generations have passed since the new era of space colonization began. Humans have completely adapted to colony lifestyle. Despite the different cultures on each of the cont...

You play as a corporation trying to control the asteroid belt one hundred years in the future. Research tech, upgrade your bases and expand your corporate Empire with fleets of ships, while seeing off...

Exclave Online is a free persistent online MMO where you battle for territory across a vast galaxy, gathering resources and creating new technology and space ships in your laboratory to destroy your e...

In Planet War, players build massive ships to navigate the stars and > explore the Milky Way to learn of the ancient alien civilizations. > Players can explore alien technology and build allianc...

PolisForge is the most advanced free nation building game available today. Other browser-based nation simulations stop at spreadsheets and basic stat management. PolisForge delivers the gameplay depth...

A slow, persistent browser 4X in one shared galaxy. Begin alone in a sealed cluster, build your star system, and light the beacon when you're ready to join the living galaxy. Free, no download �...

Battle for Serios is an online strategy space game where you take up the role of a Galactic Emperor! Fight for Serios against thousands of players from around the world! This game is like no other......

Build your empire among the stars. OGameXL is a free space strategy MMO in the classic OGame style, rebuilt with a modern interface, fast universe speeds and 13 languages. Play straight in your browse...

LAST-WAR is a persistent multiplayer sci-fi strategy game with research, colonization, espionage, alliances, trading, PvP fleet combat and custom ship design across seven galaxies....

Aleryos is a free browser 4X where every emperor builds a galactic empire, creates custom ship designs, conquers worlds in space and on the ground, and competes through alliances, PvP, PvE and regular...