Top similar games like Second Galaxy:

Player bases are located on asteroids, which travel within the Oort Cloud. Once they’ve acquired the appropriate skills, players can control their asteroid’s movements. Mass-combat enthusiasts will love the Arena: here, players can battle it out against alien races or other Astro Lord players.

EVE Online is a free-to-play community driven space MMO where players can choose their own path from countless different options. Experience space exploration, immense PvP and PvE battles, mining, industry and a thriving player economy in an ever-expanding sandbox.

In Star Trek Online, the Star Trek universe appears for the first time on a truly massive scale. Players take the captain's chair as they command their own starship and crew. Explore strange new worlds, seek out new life and new civilizations, and boldly go where no one has gone before.

Andromeda is a hybrid between a space 4X and an MMO for Android and PC. Get dropped into an online universe sandbox with 2 galaxies full of planets to colonize. Build structures like Mines to generate resources to build ships and engage in fleet battles with NPCs and other players.

Fly through Subspace, build your own ship, and engage in epic battles. Mine asteroids and research new technologies. Uncover the origins of the alien homeworld by solving weekly events in this Co-op PvE MMO.

Stake your claim, command your fleets, and wage epic war in space.

STAR WARS™: The Old Republic™ is a free-to-play MMORPG that puts you at the center of your own story-driven saga. Play as a Jedi, Sith, Bounty Hunter, or one of many other iconic STAR WARS roles in the galaxy far, far away over three thousand years before the classic films.

Anarchy Online – the first ever science fiction MMO – is now on Steam! Compete and cooperate with thousands of players simultaneously on a vast, alien world. Join humanity nearly 30,000 years in the future in a world of perpetual conflict and scientific marvel.

Pixel Starships is an FTL-style online sci-fi strategy builder and management game with a competitive PVP tournament. Set in the retro galaxy, your role is to explore space, meet aliens, and develop your ship, crew and AI. The game contains deep strategic and 4x elements. PSS is community-driven.

PlanetSide 2 is an all-out planetary war, where thousands of players battle as one across enormous continents. Utilize infantry, ground and air vehicles, and teamwork to destroy your enemies in this revolutionary first-person shooter on a massive scale.

“4X-Galaxy” is a game developed by the 4X concept system(eXplore、eXpand、eXploit、eXterminate)

Build anything. Fight anyone. In space. Highly tactical competitive sci-fi combat/building multiplayer free-to-play game. Bit of MOBA, bit of sandbox. Try it out to see for yourself!

Have you got what it takes to survive on Mars? ROKH is a multiplayer survival game featuring scientific realism and extremely deep crafting and building. Make the red planet your sandbox and create a thriving colony.

Darkwind is a multiplayer online, simultaneous turn-based game of vehicular combat. Set in a post-apocalyptic world, it involves physics-based tactical combat and deathracing, online leagues, cooperative wilderness scouting and looting, trading and camp-based crafting. Live and online since 2006!

There is a quarantine declared throughout the orbit so all the pilots are grounded except for the few ones allowed to participate in training battles. Join their ranks for blazing fast space battles with another players in this top-down shooter game

Starship Empire is an intense PvP-filled space MMO where you not only lead your ship into epic battles, but manage the entire crew inside!

Take control of your own starship in a cutthroat galaxy. Elite Dangerous is the definitive massively multiplayer space epic.

Immerse yourself in the WAKFU universe with this free to play MMORPG. Select your class, travel the world, meet adventurers to challenge powerful monsters in epic turn-based battles.Participate in the kingdom’s economy and politics and create your own legend!

UFO Online: Invasion is a turn-based tactical combat MMORPG set in the post-apocalyptic world

Massively multiplayer online game in the world of magic and steam. Become a pirate or a trader, a carrier or a manufacturer in this unfriendly world inhabited by dragons.

Therian Saga is a MMORPG that tries to stand out of the crowd by offering a compelling storytelling surrounded by a massive mathematical set of rules that define the world your hero will evolve in. It could be said that it borrows elements from old-time MUD games, strategy games and even tabletops RPG.

Discover yourself in the “Age of Discovery” where you’ll sail out into the uncharted waters! Discover real historical artifacts and mystical legends! Start a company and make enormous fortunes! Fight in fierce sea battles! Whatever your play style, you can play who you want and how you want in UWO!

Game of Thrones Winter is Coming is a PC strategy game based on the HBO drama television series, officially licensed by Warner Bros. Interactive Entertainment under HBO, and developed and published by YOOZOO Games. Interactive Entertainment and HBO.

Миллидор – глобальная клиентская онлайн стратегия в лучших традициях классического fantasy. Миллидор дает возможность стать правителем своего королевства. Суровым, деспотичным воякой или, наоборот, дипломатичным торговцем – выбор за вами!

A unique space strategy game where thousands of players participate in one shared galaxy.

Endless Sky is a 2D space trading and combat game inspired by the classic Escape Velocity series. Work your way up from a relatively wimpy shuttle, cargo ship, or fighter, to a highly upgraded and customized flagship or to a massive fleet of warships or freighters.

Design unique spaceships and build the ultimate space mining fleet as you team up to battle for resources and glory in this massively multiplayer action strategy set in an alien wasteland.

Battle for the Galaxy is a freemium cross-platform MMO strategy video game. Battle for the Galaxy features player controlled development of the space outpost, further defending that outpost from other players, as well as attacking outposts of other players.

Wing of Misadventure is the definitive Massive Multiplayer Online RPG experience, featuring a unique art style, carefully crafted loot system and fast paced combat style, making it the perfect match for hardcore and casual gamers alike!

Age of Ascent: Arrival is a new space co-op and combat game featuring direct-piloting solo and co-op missions and real-time PvE and PvP battles set in stunning space scenes.

Command and customize your own capital ships. Take down opponents in thundering, team-based combat. Dreadnought is a free-to-play shooter that puts you at the center of spaceship battles on a colossal scale.

The Great Battle between Karus and El Morad has arrived to Steam! Pledge allegiance to one of the Nations and put your skills to the test in one of the best PvP system in the MMORPG universe!

Gangs of Space is a massively-multiplayer Rogue Shmup where Gangs of players compete for the conquest of the galaxy.

Tactical Craft Online - MMO sandbox with tactical role-playing elements with a large open fully destructible world, with clans, trade between players, construction limited to the players imagination, various crafting, mining of multiple ores, farming, fishing, a massive tech tree etc.