Top similar games like Grimstar: Prequel:

Grimstar is a real-time strategy game with a story-based single-player campaign. Your brother's sudden death has hit you hard, but the laws of the corporation for which he laid down his life dictate that you must take his place until his contract is fulfilled...

Free-form space defense in real time. Mine asteroids, route power from Helios and hold off pirate fleets. Lose one Conductor and a whole flank goes dark. Build without a grid, choose your weapons and take on 21 levels.

Hyperwar is an RTS game with many classic elements such as base building, research, unit production and resource gathering, but it also contains new approaches and ideas. Paired with modern graphics and a freely moving camera, this game is a completely new experience in the genre.

Astro Industry Wars is a lighthearted, futuristic real time strategy game with base building, economic production chains, colorful worlds, and lots of vehicles.

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.

Wonder Defense: Chapter Earth is a strategy game based on Earth and Aliens in which you act as a General to accomplish survive and move to Mars.

Element is a realtime strategy space game for people who don't have time to play realtime strategy space games. Generate energy, mine element, build attack and defence units, and destroy the enemy while maintaining a balance between earth, air and water.

You will have to lead the civilization, develop the economy, enhance the technology, stabilize the people and colonize new galaxies; when encountering unknown civilizations, will you hide yourself or communicate with them in a friendly way? In this "dark forest", every decision will be crucial.

Stellar Reach is a 4X hard sci-fi strategy game where you control a faction vying for dominance across a hostile galactic frontier. Guide your empire through conquest, prosperity, or industrial power as you advance through six distinct tech trees and forge your path to victory.

Hell of Men: Blood Brothers is a real-time strategy game, developed by one person, in which you will have to collect resources, build your base, train your army by choosing your soldiers wisely and fight.

An RTS base builder with huge battles, constant production, and autonomous ships. The Spance approaches, a vast and mysterious storm at the edge of humanity. Who shall claim its riches? Brave the perils of the depths in a story-rich singleplayer campaign with numerous distinct factions and bosses.

Take command of powerful armies with intuitive player controls and classic RTS features and feel. Control powerful super-weapons and elite units through 39 campaign missions. Continue the fight on 20 skirmish and 8 unique survival maps.

Build fortified bases, protect your ore and power networks, and command infantry, armor, aircraft and warships in a near-future single-player RTS. Lead an eight-mission campaign or customize skirmishes against rival AI commanders—with an AI ally at your side.

A classic RTS featuring traditional base-building, resource-driven warfare, PvP, skirmish, and a powerful, easy-to-use Mission Editor. Build your base. Secure the ECO. Conquer the battlefield.

Dying Hope is a space marine RTS centered around base building and survival. Set in a post apocalyptic future you command a cohort of humanity's remaining military personnel designated as Earth's final hope on an alien outpost planet.

Defend entire planets against hostile invaders in this full 3D tower defense game. Manage resources and space while constructing weapons, defenses, and structures to withstand the destructive onslaught across multiple planets.

Build, trade, and survive in a living ecosystem where every choice shapes the colony and every faction remembers. Deep systems connect production, management, and survival in a world that never stops reacting.

Build. Command. Conquer. Take control in a fast-paced VR RTS packed with intense battles, dynamic defenses, and strategic depth. Survive brutal enemy waves, defeat epic bosses, and battle rivals online in explosive 1v1 multiplayer!

Get ready to protect the entire solar system from an unprecedented threat - the D'Ahari, a race of insect-like aliens. Control an entire fleet of spaceships, trade with other races of an Alliance, and develop your own space station.

A grand and intense tower defense science fiction game, where you only need to purchase once to enjoy all the content of the game.

World order is revolutionary sci-fi real-time strategy, the main feature of which are modular units

Build layered defenses, command futuristic weapons, and trigger devastating chain reactions against waves of Soviet super soldiers. Red Conflict 2044 is a single-player survival RTS with vertical construction, escalating battles, and dark satire about an empire that calls invasion liberation.

A defense RTS where you can move turrets at will. Extract resources, upgrade technology, and defend against enemy swarms in a gripping space campaign. Hold the line, set up your turrets, and brace for screen-filling hordes!

2089 - Space Divided is a classic science fiction real-time strategy game in which you collect resources, build up your base, train troops and destroy your opponents with tactical skill.

Block Strategy is an RTS Base Defence roguelite with a fully destructible world. Build your base and find fuel to power your reactor before you're overrun by an onslaught of enemy robots.

A classic single-player RTS set in a Solar System ruled by megacorporations. Journey from Mars all the way to Planet 9 and uncover the secrets of the BlackChain.

Empires Edge is a strategy game about building a civilization on floating islands, inspired by the classic Mega Lo Mania. Lead your people, achieve technological breakthroughs, and conquer new territories as you forge an empire at the edge of the Universe.

Expand your own galactic empire across new stars, research technologies, and challenge great alien powers in this immersive 4X grand strategy game. Build interstellar colonies, and starbases to gather more resources. Explore a unique galaxy full of secrets, great perils, and limitless possibilities.

Space Tales is a sci-fi RTS where you build fortified bases, manage resources, and command retro-futuristic armies. Adapt to deadly alien factions, capture huge monsters and turn them into powerful allies as humanity fights to survive among the stars.

Frontier Control: Invasion is a Real-Time Strategy survival game in which you play the commander of a human space colony under the attack of outer space robots. Build your base, train your colony, and fight herds of enemies and bosses.

Lead a living star network in this real-time 3D sci-fi strategy game. Expand from one stellar core, link orbital nodes, secure resources, and launch coordinated assaults as every connection reshapes your economy, defenses, and territorial control.

A sci-fi, 4X, real-time strategy game. Build, fight, and explore to survive against an unstoppable alien threat. Carry the fight from one galaxy to the next as you battle back from the brink of extinction, and unlock the secrets of the past to restore your people to the path of galactic super power.

You are in command of the human fleet, searching for asteroids to mine, extract resources and build bases and more ships to defeat aliens invaders. This simple and short action RTS has a full and exciting campaign, and a skirmish mode that allows you to play a different mission on every match.

You are on the run. Build stations in hostile systems, gather what resources you can, and jump away before you are overwhelmed. Your ships are slowly failing, but the Swarm is relentless, hungry, and on your heels. Can you survive long enough to secure a future for humanity?

Design and command a fleet of space warships in a 3D Real-time Strategy game. Customise each of your ships with a wide range of weapons and upgrades. Complete contracts for each of the five factions to gain access to their ships and arsenal. Take control of your ships in 3 dimensional naval combat.