Top similar games like Space Kingdoms:

Star Zeal 4x is an open world space based strategy and rpg hybrid with elements from the 4x genre and survival mechanics sprinkled on top of it. Highly emergent gameplay within an open world persistent galaxy is the core purpose and idea of the game.

Build a small mining colony in deep space and defend it from alien invaders as you extract precious minerals from asteroids in Astro Mining.

Command a growing fleet in a free-to-play, persistent real-time space MMO. Pick one of twelve rival human factions, build your starbase, mine rare resources, research alien tech and wage war across a seamless universe, while an ancient alien Tide gathers at the edge of the Frontier.

Step into the world of galactic combat in "WarOS", a Chinese sci-fi game! It creates its own structure, integrating the core gameplay of RTS with the details, plot and growth system of RPG, simplifying complex micro-manipulation, and making the game experience both fun and exhilarating.

The ultimate space capital ship combat compendium is the evolution of hard core space combat sims. The only game of its kind currently in existence.

Prospect a procedurally generated, infinite galaxy in this open-world space mining and combat sandbox. Carve ore from fully voxel based asteroids, outfit your ship, hunt bounties, and build your fortune! You can even bring a friend, or a few, in online (or LAN, up to you!) co-op/multiplayer!

BROBLAST is a top down builder game where you defend your base from enemies

FerroFrame is a real-time strategy ecology simulator — dig, dam, redirect and blast industry into high gear, then survive the world as the balance tilts in either direction. Use gigantic mechs called frames to terraform the planet to your needs and replenish your world with asteroids!

On a planet with a biome climate similar to Earth, manage your residents from basic construction and planting, develop and research various cutting-edge technologies, recruit soldiers to form troops, resist foreign enemies or actively conquer other countries, and unify this distant planet.

In Space Drilling Station, manage a drilling station on a distant planet. Build a multi-level vertical structure to produce and manage your resources and staff, in order to dominate the competition!

A strategy game in a post-apocalyptic world. Different factions fight for supremacy and resources.

In Hexmet World you can create your ideal world, build your strategy, attack the enemy, and enjoy the beauty of the created places!

DomeFall is a 1–4 player co-op survival sandbox FPS where you scavenge derelict starships, trade with alien stations, and defend a fragile orbital dome from endless undead swarms in the haunted graveyard of space.

This is a game combines SIM and SRPG. Please lead your family, your friends and strangers who come to you to survive in this broken, unknown and fascinating universe, Captain.

Immerse yourself in Tactical Warfare, a captivating mini-game of the base game where you defend your base against relentless enemy waves. Strategize, fortify, and survive to emerge victorious. Wishlist now for exclusive access to the playtest and full game on November 29, 2024!.

Run and defend your own fantasy tavern in this cozy simulation brawler. Manage staff, serve adventurers, and customize your tavern’s layout, then fight off rowdy goblins and bandits with your companion in chaotic barroom brawls.

Space adventure with open world, FPS shooter and a lot of missions. Choose your own carrier. Are you a space pirate or a brave space ranger? Choose your destiny. The galaxy needs you, commander! Openworld game with multiple worlds to explore.

Space Gears is a next-generation Strategy set on Mars. Don't fret about micromanaging build orders, or your resources. Set your sights on victory by raising an army of mechs and build up your base in this fluid and fast-paced PvE and PvP strategy game.

As a commander of an imperial space force you will conquer unexplored planets, create colonies and equip your fleet for attack or defense. Strategic warfare is the focus of Spaceinvasion!

Champions of the Cosmos is a retro sci-fi RTS inspired by 80's action figures, comics and movies. Play heroes with the power to reshape the landscape around them and other unique abilities to take over the cosmos and choose whichever side you sympathize with most - light or darkness. 

Outpost Surge is a society survival game on Mars, where players balance resource management, city growth, and settler health to turn a barren landscape into a thriving, vibrant city.

Exostation is a sci-fi real-time strategy game. Reach sustainable planet economies by building, allocating, mining, and selling wisely. Allow humanity to spread and conquer new solar systems not by war but by ensuring its planet's resources are not exhausted.

It's the year 5781 -- and you have been chosen to build and lead a space station in a wild corner of the galaxy! Attract visitors and explore hundreds of planets to fund your station.

You are a space trader living inside a capsule in deep space. Supply passing starships, maintain balance in a weight-based physics system, and build your own space colony.

You have been commissioned to collect and research space minerals by destroying asteroids near your space shuttle. With your growing inventory of materials and new knowledge you build additional modules on your shuttle continuously expanding it into a self sustaining space station eco system.

Gnome RTS is a real-time strategy dungeon crawler where you direct a colony of gnomes and escape a cursed labrynth. Command Gnomes to clear out dungeons and discover hidden treasure while you slog your way through the underworld to retrieve the Boulder of Fate and save the forests above.

Become the Captain of an interstellar cruiser and journey across the galaxy to save the Republic. During your journey you will have to make important decisions, improve the weaponry of your ship and fight against numerous enemies.

'Project : Skyscape' is fighter jet experience, multiplayer across VR and non-VR platforms, with in-depth physicalized cockpit interactions. Skyscape hits the gap between simulator and game with a balance of realism and fun

Emma: "Humanity stands on the edge of extinction. As the commander of AlphaRobo, Earth’s ultimate war machine, you’re our final defense. The rogue AI is back, stronger than ever. Upgrade your mech, unlock powerful abilities, and lead the charge to save us all. We are waiting for you, Commander."

Orbital Traffic Controller is a sci-fi spaceship management game set in the Solar System. Become an interstellar traffic controller, directing vessels from planetary holding patterns and warp gates to atmospheric reentry, all while avoiding collisions with other spacecraft and planetary bodies.

Elusive Verge is a third-person space exploration game with dash of base-building, combat and survival.

Grow your rocket startup from a humble launchpad to sprawling colonies on Mars and beyond! Secure government contracts, launch massive satellite constellations, build space stations, terraform Mars with nuclear blasts, and mine vital resources to fuel your expansion!

Space Travellers is a unique open-world sandbox space simulator set in the year 2343. Travel the galaxy, trade, explore unexplored worlds, fight, build bases and factories, forge alliances and experience new adventures!

One stage, infinite dungeons, zero professionalism — Command a band of misfit heroes in a dungeon-crawling stage show gone wrong. Kick doors, steal spotlight, and flop spectacularly in this tactical comedy roguelike.

The technologically advanced humanity starts looking for other planets to conquer. Now that the Earth is depleted of its resources, we're looking for them elsewhere. The Universe is open for us now - and it cannot hide any secrets. So how will you conquer it?