Top similar games like Cosmic Stronghold:

Warfactory is an automation RTS where production defines the war effort. Build assembly lines to forge an army of machines, then feed thousands of units into massive real-time battles where every loss must be replaced by your factory.

Planet Gemini is a factory building and tower defense game. On two planets that crash-landed during a dimension trip, survive against incoming enemies and research on a portal to escape.

A classic RTS about building and defending your evolving base. Workers automatically gather resources so you can focus on strategy, expansion, and upgrades. Build walls and towers, command mobile troops, and survive endless procedurally generated enemy waves.

Astra Sentinel is a wave-based survival RTS where endless alien hordes relentlessly assault your planets. Build defenses, colonize planets and manage resources under constant pressure. Will you be able to recover the control of the galaxy?

2D Strategy game.

Breach networks, plant malware, steal secrets, and outsmart digital defenses in a real-time strategy campaign that teaches cybersecurity through immersive, hands-on gameplay—no experience or skills needed!

Little Kingdom RTS is an indie real-time strategy game set in a medieval fantasy world. Gather resources, build settlements, raise walls, and grow your small kingdom. Command an army of knights, archers, and mages to fight off rival kingdoms, orcs, and undead.

Build & defend a small remote mining base on Taichin XI from the alien hordes. Deploy defenses, upgrade your turrets and get ready for the nightfall. The Unearthened is a classic Idle Tower Defense game where you build towers and prepare for the invasion.

Roboden is a fresh take on the RTS genre: less micro-control tedium with more units!

Command a swarm of intelligent robots in their quest to save the world. Mine resources, manage, and defend multiple bases. Go on expeditions, fight in auto-battles, research new technologies, and create your army of golems to bring back the light.

Jump into this tactical tower defence! Defend your dungeon from an adaptive AI that'll respond and react to the dungeon you create. Trap up your treasures, make mobs and magic, and defend your dungeon!

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.

Defend galaxy against Alien invasion in the RTS offline game with roguelike fun

Prepare for an epic battle in this captivating tower defense game! Build, defend, and triumph as you strategically place towers, manage resources, and upgrade your arsenal to fend off relentless waves of enemies.

Lustle is a small RTS game featuring economy building, combat, unique factions, procedural maps, and a cheerful pixel art style. In the game, you can play as factions such as bees, termites and in future other insect-based nations!

Delve for materials, machines and curiosities in this game inspired by Dungeon Keeper and Pikmin.

Embark on an adventure with Loot Express Delivery Service, a 2D pixel art game. As the commander, your goal is to retrieve valuable items from a distant planet. Utilize your skills and strategy to complete missions and guide your company to prosperity.

This is an RTS game less than 300MB, but it already contains many interesting game mechanics, There are many types of soldiers and tactics for you to choose. Support LAN online battle. Special Thanks for Pixel Art <Tiny Swords> UwU~ I hope you will be interested in more RTS games after playing :)

Pixel Punk is a strategy tower defence. In pixel Punk you build different turrets that will protect you against the never ending waves.

Join in on the next gold rush and become a prospector in space. In this unique tower defense you can set up and reposition towers for maximum efficiency and adapt to the environment.

Keyclash is a simple tower defense roguelike about building on keyboard keys and surviving as long as possible.

Mob factory is an tower defense and automation game for the lazy adventurer. Smelt down enemy loot into turrets & factories to automate an ever expanding dungeon from the comfort of your tower.

Orcdom is a minimalist tower defense game with full freedom in tower placement. Defend your crystal from waves of orcs attacking from all directions. Plan your layout, time your spells, and unlock new strategy modes in this fast-paced tactical challenge!

Welcome to the frontlines! Build towers, muster armies, and conquer the map. Challenge yourself in the single-player campaign following the Chroma Wars, survive relentless waves in solo defense, or battle it out in local matches against friends and AI bots. Victory comes with the last HQ standing!

Build your defense base to repel alien invaders. Atahion is a strategy and tactical defense game in which you have to extract resources, build defense towers and use bonuses to complete the mission.

A strategy game with a new kind of enemy, Calyx puts you in charge of a space mining outpost, locked in battle against powerful plant-aliens. Build your base, gather resources, assemble your forces, and take on the Calyx. With only an out-of-date AI for company, can you survive?

An open-ended factory management game with RTS and tower defense elements.

A 2D Strategic Base Defender game set in Medieval times. As relentless Waves of enemy forces threaten your Stronghold, you must gather Resources, Fortify your Defenses and lead your Rebellion. Prepare to strengthen your Base and manage your Resources. But beaware of the Storms!

Build towers and learn abilities to defend against swarms of hundreds of on-screen hostile alien creatures. Choose between sets of randomized upgrades that both upgrade you and the alien swarm. From enormous explosions to far-reaching flamethrowers, no two games are the same.

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.

Customize your Ships, Upgrade your fleet, and Command your way to victory in this ruthless rogue-lite tower defense/real time strategy hybrid. Take on an enemy that learns from your moves and adjusts its own path. Do you have what it takes to persevere?

Drill Deal is a fun oil business simulator. Start from a single tiny rig and expand it to a large complex of connected platforms. Optimize & grow your business. Look out for threats like weather, terrorists, fire, and others. Take care of your working crews.

Taur is an action-strategy sci-fi game. Control the Prime Cannon and unlock all of its powerful weapons and abilities. Build turrets, droids, aircraft and more as you fight to protect the homeworld of the Tauron droids against a relentless invasion. Will your Taur stand against the Imperion warmachine?

Byte Lynx is a fast-paced RTS with no units. Build defenses, dismantle your enemy, and steal their buildings in this deeply tactical building combat-based strategy game. Expand your arsenal across a series of diverse levels!

Protect the base from an alien invasion. Place cannons and destroy the invaders. Upgrade cannons to resist the enemies.