Top similar games like IDUN: Prologue:

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!

A strategic space tower-defense game. Enemies detect, warn, and try to bypass defenses, forcing you to adapt. Combine diverse towers and face unique maps for varied battles. With tense sci-fi atmosphere, it delivers a fresh experience beyond traditional tower defense.

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

Loop Defense is a single-player sci-fi tower defense game. Build enemy routes with base walls, assemble a modular defense, manage limited loadouts, energy, and research, face armored, flying, carrier, and wall-breaker units across a star map, or challenge Endless Mode.

World of Towers combines puzzles with tower defense. Design your base in order to collect all of the puzzle pieces and destroy your enemies. Create and share your own worlds on the Steam Workshop using the World of Towers World Builder

ASSEMBLE AND COMMAND YOUR SPACE FLEET TO VICTORY

Ifectra is a strategy game set in 2124 on the distant planet Emevera III, ruled by the Maxploit Corporation, where an epidemic of a yet unknown virus broke out. Your goal as the corporation security commander is to evacuate as many healthy people as possible and to eliminate infected individuals.

Build powerful defenses, collect loot, combine effects, and survive evolving waves from the void in a tower defense game driven by ARPG-inspired buildcrafting and persistent progression.

The unstoppable fluid enemy has returned and destroyed every world in its path! Defend against Creeper as it floods across the 3D terrain in this real time strategy game where the enemy is a fluid.

Take command of civil air defense under constant threat. Build radar networks, manage power and resources, and decide when to sound the sirens. Every choice has consequences. Hold your cities together as escalation turns survival into strategy.

Join our machine legion to conquer the world.

Kaiju Inc. is a Real-Time Tactics + Roguelike Monster strategy game! Mutate, Modify, and Evolve your monsters! Command your strongest monster squad through Roguelike stages!

Feeling Medievaly? Travel to the most vibrant version of the Dark Ages yet to defend your kingdom from encroaching enemies! Devise creative strategies, manage resources, and enjoy a dynamic simulated medieval battlefield where every decision matters and the unexpected will always happen!

Upgrade and evolve, expand your territory, and build mighty defense towers to repel hordes of monsters.

Build and defend a space colony where every unit of power and every crew assignment matters. Expand production, research new technologies, shape the battlefield with walls and weapons, and adapt your strategy against alien swarms across nine campaign operations.

The Kingdom Fallen is a dark fantasy tactical strategy game. Recruit and train your forces, befriend new heroes, and use the terrain to your advantage. With sword and magic, survive the onslaught of the undead horde.

On a forgotten world, confront a malevolent machine intelligence. Extract minerals, build factories, power up the railguns, and arm the missile batteries. Defend the Fortress Omega against the alloyed nightmare.

《Ember Legion》 is a lightweight RTS. Rifts shattered the world—hope lingers in embers. Choose a hero, build a legion, attack by day, defend by night. Master day-night cycles and troop combos to reclaim your homeland.

Roman Conquest: Rise to Power is a turn-based strategy game in which the player can feel like a great commander of the Roman Empire. Lead a legion and go with your army to recapture the occupied lands.

Assume command of a battle fleet and deploy immediately to the Dust Zone, commander. Our main food supply station has gone dark and the United Earth Nations (UEN) needs to know why in this 4X RTS space sim. Manage your ships, control space stations, and watch your back.

Rule the battlefield from orbit! Crystal Nexus: Alien Siege is a hybrid deckbuilding tower-defense game that puts you in charge of outposts on hostile alien planets. Look down on the battlefield from your space station and deploy towers, weapons, and buffs from the cards you’ve collected!

An alternate reality sci-fi survival RTS. Command, defend and dominate in 2044 against endless waves of Soviet super soldiers. Two factions, each with their own distinct technology and tactics.

Toy Empires is a unique fast-paced, micro-management-free real-time strategy game. All you have to do is make the purest decisions and games!

This is a sci-fi strategy game featuring a Defense Mode focused on tower defense and an Attack Mode focused on combat. The game includes over 30 different buildings and units, all of which can be upgraded through entry editing to enhance their performance and firepower.

《水浒英雄传：八幕战役》是一款取材于《水浒传》的 2D 等距即时战略游戏。率领宋江、林冲、鲁智深、武松等梁山好汉，完成伏击、营救、破阵、据守与护送等八幕战役；也可在据守战和人机 1v1 中采集资源、建设营地、训练英雄、研究科技并指挥大军。游戏包含战争迷雾、阵型、驻军、巡逻、技能与编队系统，并内置关卡编辑器，可布置地形、单位、增援、波次和胜负条件，保存后立即试玩自己的战场。无论体验剧情还是自建战场，都能以自己的节奏调兵遣将，重演梁山豪杰的热血征途！

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.

Build an autonomous colony on a living procedural planet. Gather resources, command robots, expand your power grid, and defend the teleporter from an ecosystem that reacts to every step of your growth. Activate the link—or lose everything.

"Steel Covenant" is a 3D real-time strategy game. The game is set against the backdrop of World War II. Players can transform into Allied or German commanders, commanding multiple units to participate in battles

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.

Competitive endless sci-fi tower defense game with global leaderboards where you strategically place and upgrade Glowbots to stop waves of enemies across vibrant space maps.

Valdis est un hybride dynamique tower defense et third-person shooter en univers sci-fi. Défendez le noyau énergétique d’une station spatiale contre des vagues de zombies, combinez tourelles et éléments, déclenchez des réactions dévastatrices et survivez avec votre fusil à pompe !

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

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!

A real-time strategy game of orbital warfare. Build satellites, launch them into chosen orbits, and fight for control of the sky. Your assets stay invisible until an enemy sensor finds them. Every strike depends on being overhead at the right moment.