
In this sci-fi action/strategy game, you're the only trump card left to stop the Contingency in their destructive march. Man your ship, build your arsenal and blow away the waves sent to stop you in your tracks.
60+ similar titles based on shared tags and player behavior. Themes include Strategy, Singleplayer, Tower Defense, Indie.

In this sci-fi action/strategy game, you're the only trump card left to stop the Contingency in their destructive march. Man your ship, build your arsenal and blow away the waves sent to stop you in your tracks.

Joy Guardians TD
A lighthearted tower defense game where everyday people fight back against hustle culture. Place and upgrade offbeat heroes like pillow-throwing grannies and wheelchair slingshot kids to stop workers zombified by an energy drink corp. Use philosophy and paint to remind humanity how to enjoy life.

LowPoly Towerdefense
You play in a SciFi environment with LowPoly graphics, engaging in Tower Defense. Manage resources! Each round introduces more enemies that you must defeat. Build resource ships in the factory and simultaneously construct towers on the platforms to fend off the adversaries.
A lighthearted tower defense game where everyday people fight back against hustle culture. Place and upgrade offbeat heroes like pillow-throwing grannies and wheelchair slingshot kids to stop workers zombified by an energy drink corp. Use philosophy and paint to remind humanity how to enjoy life.
Why similar: Action RTS 36.1% ★, Tower Defense 35%, Strategy 21.7%, Stylized 6.4%, Singleplayer 0.7%
You play in a SciFi environment with LowPoly graphics, engaging in Tower Defense. Manage resources! Each round introduces more enemies that you must defeat. Build resource ships in the factory and simultaneously construct towers on the platforms to fend off the adversaries.
Why similar: Action RTS 36% ★, Tower Defense 29.7%, Strategy 23.3%, Stylized 6.4%, 3D 4%
Starfall Defenders is a classic tower defense game that features unique towers and enemies. It also has an in-game shop system that allows players to purchase better towers, upgrade existing ones, and buy special items like the Atom Bomb, Splash Bomb, and Air Supply.
Why similar: Action RTS 35.6% ★, Tower Defense 28.4%, Strategy 18.9%, Action 7.2%, Space 6%
Explore a galaxy of 300 systems as you control your fleet in a top-down 3D style, navigating through Star-lanes, Warp gates, and Black holes. Customize and upgrade your fleet, complete missions, trade, hire your crew, wage war and determine the fate of the galaxy in this grand sim saga.
Why similar: Space Sim 37.1% ★, Action RTS 29.5% ★, Strategy 11.8%, Sci-fi 7.1%, Action 5.6%
The roads are under siege. Command a knight, wizard, and druid to stop waves of monsters in this fantasy strategy defense game. Save gold between missions, plan your defenses carefully, and survive 8 escalating levels where enemies grow stronger and attack from multiple paths.
Why similar: Action RTS 44.5% ★, Tower Defense 29.5%, Strategy 19.5%, Stylized 3.6%, 3D 2.2%
Amidst the Wokou raids along the southeast coast of China during the Ming Dynasty (1552–1565), lead your troops, fortify your line, and repel the brutal invaders in this heroic tower defense game. Defend the common people and secure the shore!
Why similar: Action RTS 45.4% ★, Tower Defense 29.7%, Strategy 20.2%, Combat 4.1%, Singleplayer 0.7%
Pixel Defender is a 2D tower defense game with retro pixel aesthetics and direct character control.
Why similar: Action RTS 35.8% ★, Tower Defense 31.8%, Strategy 23.9%, Action 4.3%, Combat 3.7%
Assemble your army, build your village, manage your villagers, and survive the night's monster attacks until dawn.
Why similar: Action RTS 41.4% ★, Tower Defense 30%, Strategy 13.5%, Action 5.5%, Stylized 5.5%
Celestial Defense is a sci-fi space tower defense strategy game where tactical base building and resource management determine your survival. Build asteroid belts, evolve planets, and withstand relentless wave survival combat against the Void.
Why similar: Action RTS 36.7% ★, Tower Defense 29.9%, Strategy 21.8%, Sci-fi 5.6%, Space 5.2%
Anomaly Warzone Earth Mobile Campaign continues Steam's Anomaly Warzone Earth in an extra 15-level campaign. Originally released on mobile devices, the campaign is brought to Steam for PC, Mac and Linux exclusively in Anomaly Bundle. AWE Mobile Campaign turns tower defense on its head.
Why similar: Strategy 39.9%, Tower Defense 32.2%, Action 20.6%, Sci-fi 6.7%, Singleplayer 0.6%
Comet Busters is a game similar to asteroids with it's own flare and uniqueness. You pilot the Destiny, an ancient warship converted to a mining vessel. It has advanced weaponry such as bombs, missiles, laser bullets, and spread fire bullets. You will face enemies and unique bosses.
Why similar: Space Sim 33.9% ★, Action RTS 27.6% ★, Strategy 20.9%, Action 13.8%, Sci-fi 3.5%
Exclusively brought to Steam for PC, Mac and Linux in Anomaly Bundle, Anomaly Korea is an expansion campaign to Anomaly Warzone Earth. The alien robots are back and this time they’ve got Korea in their sights. It’s your job to lead a squad into fierce fire-fights and fend off the alien invasion.
Why similar: Strategy 40.3%, Tower Defense 33.6%, Action 18.6%, Sci-fi 7.1%, Singleplayer 0.4%
Phantom Signal is a real-time sci-fi strategy game with unusual mechanics. Explore mysterious star systems and reveal the secret of the phantom signal.
Why similar: Tower Defense 33.6%, Strategy 28.4%, Space Sim 20.2% ★, Space 9%, Sci-fi 8.1%
Build a battleship and fight through unforgiving space to save your people. Make strategic decisions, guide your people, meet allies and foes, and battle for your right for a home. The tale of a lone spaceship on a centuries-long mission from Voidship: The Long Journey greatly enhanced and updated!
Why similar: Space Sim 34.4% ★, Action RTS 34.4% ★, Strategy 14.6%, Action 8.8%, Sci-fi 4.1%
A small, third-person, action, tower defense game where you play as a peasant who gets tired of adventurers breaking into his house. Place down towers and fight off waves and waves of "enemies." Progress through the story and see just how far one man will go to protect his beloved llama.
Why similar: Tower Defense 42.6%, Strategy 24.3%, Action 14.8%, Stylized 8.4%, 3D 5.1%
Sci-fi tower defense meets ARPG-like hero combat. Build towers then fight alongside them with your hero as you battle through a campaign to uncover the fate of a colonization effort on a distant planet.
Why similar: Tower Defense 33.6%, Action RTS 26.8% ★, Strategy 16.7%, Action 10.2%, Sci-fi 8.1%
Design massive ships, bristling with weapons, on a macro scale. Engage in fleet-vs-fleet battles, featuring many different tactics. Play alone or in Coop combat missions, or form two teams of players (each with own fleet) to fight in an arena.
Why similar: Space Sim 29.3% ★, Action RTS 23.5% ★, Strategy 16.4%, Naval Combat 9.3% ★, Space 7.9%
Jungle Resistance is an isometric Tower Defense game with Kingdom Rush Upgrade Style, with branching Tower Types. This will give a new Vibe and Mechanic to the Tower Defense game.
Why similar: Action RTS 40.4% ★, Tower Defense 33.3%, Strategy 25.5%, Singleplayer 0.8%
Defend your base against relentless alien waves in a sci-fi tower defense strategy game. Build deadly kill zones, unlock new towers and special abilities, and adapt your loadout to survive escalating assaults across a hostile campaign.
Why similar: Action RTS 34.1% ★, Tower Defense 28.9%, Strategy 12.8%, Stylized 5.6%, Action 5.6%
M.A.C.E. Tower Defense is a classic tower defense game with unique towers and enemies and an ingame shop system for getting better towers, upgrade existing towers and buy special items.
Why similar: Tower Defense 41.3%, Strategy 33.4%, Action 18.8%, Sci-fi 6.6%
Anomaly Defenders is the closing installment of the Anomaly series. The original incarnation of the Tower Offense sub-genre had players controlling humans fighting alien invaders. Now, the tables have turned. The human counterattack is underway and the alien homeworld is under threat.
Why similar: Tower Defense 55.3%, Strategy 28.4%, Action 13.1%, Sci-fi 3.2%
AT THE LIMITS OF EARTH, AT THE EXTREMITY OF HEAVEN. A REAL-TIME STRATEGY NIGHTMARE.
Why similar: Action RTS 27.9% ★, Tower Defense 20.3%, Space Sim 17.7% ★, Strategy 10.5%, Action 6.2%
Rush for Glory is featuring challenging and rewarding Tower Defense battles, in which players are defending their base against an alien invasion. By strategically building towers and upgrading them, the player can keep his base safely and further progress through the extensive singleplayer campaign.
Why similar: Tower Defense 58.1%, Strategy 28.8%, Action 13.1%
Anomaly 2 is a sequel to the critically acclaimed Anomaly Warzone Earth. Maintaining the core elements of the original, Anomaly 2 adds plenty of new features: unit morphing, over million tactical combinations, post-apo world and tower defense vs tower offense multiplayer mode.
Why similar: Tower Defense 43%, Strategy 35.3%, Action 14.4%, Sci-fi 6.5%, Singleplayer 0.7%
Defend your planet against the Space Invaders. Build your defences against lovecraftian spacecrafts. Keep your health up and you might even become an invader yourself! Warning: this game contains flashing images that may make it unsuitable for people with photosensitive epilepsy.
Why similar: Space Sim 32.8% ★, Action RTS 29.1% ★, Strategy 12.3%, Action 7.3%, Space 7.2%
Lead an armored squad through the perils of this reversed tower defense action-strategy game!
Why similar: Tower Defense 41.8%, Strategy 37.9%, Action 10.8%, Sci-fi 8.4%, Singleplayer 1%
An indie space-sim and strategy game featuring ship and fleet combat mixed with RTS elements. Complete contracts and Claim sectors for your faction in the near-future, where resource exploiting corporations are in a state of constant conflict over territory control.
Why similar: Space Sim 36.6% ★, Action RTS 25.9% ★, Strategy 10%, Space 7.2%, Action 6.9%
Orion Defense is a space-themed shooting game with a tower defense element. You will build turrets or manually control turrets to repel incoming enemy attacks in a space fortress. You will also pilot fighters to stop enemy fleeing and capture enemy commanders in the asteroid belt.
Why similar: Space Sim 39.2% ★, Tower Defense 33.3%, Strategy 19.5%, Space 4.6%, 3D 2.9%
The sequel to the hit strategy game, with new weapons, landscapes, and options.
Why similar: Tower Defense 41.9%, Strategy 37.9%, Action 20.2%
A Tower Defence game, that actually allows you to sit inside the turret and come face-to-face with the enemies! Addictive strategy - action game, with loads of shooting and explosions! Nearing 2 MILLION DOWNLOADS!
Why similar: Tower Defense 42.5%, Strategy 39.5%, Action 18%
Epic sci-fi tower defense action with 16-bit era look and feel, pitching your colonists against an almost endless horde of hostile alien robots who strongly oppose your attempts of colonizing their planet! Deluxe version includes the soundtrack!
Why similar: Tower Defense 44.6%, Strategy 35.1%, Action 20.4%
Kirkileons is a single player Tower Defence game. The game includes 2 planets containing 20 missions each(40 missions). The game relies on an original spawning method. The amount of foes depends on the percentage of magic energy VS anti-magic energy that your generators produce.
Why similar: Tower Defense 36.8%, Action RTS 35.4% ★, Strategy 27.1%, Singleplayer 0.7%
Pilot your ship across a procedurally generated star map as corruption spreads inward. Each sector holds a stabiliser; protect it from raiders and pump energy into its shields. Jump between nodes, prioritise threats, and manage energy. Hold the line until time runs out, or be consumed by corruption.
Why similar: Space Sim 47.4% ★, Strategy 24.9%, Space 11.8%, Sci-fi 5.8%, 3D 5%
The hit mobile game Interstellar Pilot 2 has come to Steam. Join the TEF forces heading to the Gatopean sector to find a new home for mankind. Play how you like in this open world space-sim developed by Pixelfactor.
Why similar: Space Sim 39.6% ★, Strategy 23.3%, Action 15.7%, Space 6.5%, Sci-fi 5.9%
Stickman World Battle - new exciting and thrilling real-time strategy with famous stickman heroes!
Why similar: Tower Defense 30.8%, Action RTS 29.2% ★, Strategy 24%, Action 12.8%, Combat 2.8%
Tiny Toyfare is a Tower Defense/FPS hybrid with a focus on strategic calm followed by twitch action. Construct powerful towers, recruit adorable squads and fight off the Dino invasion!
Why similar: Tower Defense 46%, Strategy 34.2%, Action 19.8%
Tiestru offers a new perspective to strategy games. The player has control all over the map and defines his strategy with the structures that he builds. Each structure, each connection, each location offer new and enhanced powers. In this deep and complex game everything is up to you! Define your strategy!
Why similar: Tower Defense 46.2%, Strategy 33%, Action 20.8%
As a retired hero, lead and train your villagers to stand against relentless monster attacks. Assign roles, motivate your team, upgrade townsfolk, unlock powerful abilities, and adapt your strategy to outlast the next assault. TBH is a first-person fantasy action RPG with a strategy twist.
Why similar: Tower Defense 50%, Strategy 21.4%, Action 11.8%, Combat 6.7%, Stylized 5%
The monsters are coming to invade our kingdom. Can you help our guild to stop them? Play it BEAUTIFULLY: the ultimate tower defense game has finally arrived. An epic guild of epic Heroes, dozens of angry monsters, amazing powers, golems, a lot of different and unique colorful levels is what is waiting for you in Ancient Tower.
Why similar: Tower Defense 39.8%, Strategy 32.4%, Action 27.8%
Your castle is under attack! Defend your walls against enemies and epic bosses. Upgrade your defenses with unique weapons, strategic skills, and special upgrades! Become an unbeatable defender and master every battle.
Why similar: Tower Defense 42.7%, Action RTS 25.1% ★, Strategy 18.3%, Action 10.2%, Combat 2.8%
You are an archer tasked with defending a castle from invading monsters. Inside the castle, you can manage resources and harvest crops, gather experience points to level up, and learn new skills and abilities to face stronger enemies.
Why similar: Tower Defense 59.5%, Strategy 24.9%, Action 14.2%, Singleplayer 1.4%
Build your cities and set up defensive structures to protect them from the constant threat of monsters. Brought to you by ACE Team, SolSeraph combines action and strategy for a rich gameplay experience reminiscent of the 16-bit era.
Why similar: Strategy 47.5%, Action 28.1%, Tower Defense 24.4%
Protect your village, don't let the monsters climb down the sky-high bean. Buy traps and upgrade them to the highest level. Wear the strongest armour and always use the right weapon to defeat the enemy.
Why similar: Tower Defense 44.3%, Strategy 25.3%, Action 15.5%, Stylized 6%, 3D 4%
我们想打造一种很不一样的塔防游戏, 它应该很紧张,很刺激,除了策略, 还应该有英雄操控,玩起来更像我们过去玩的魔兽RPG, 潮水一样无数的怪,还能多人合作。 对了! 玩家之间还要能够公平竞技来一场PK, 这种PK要比MOBA游戏轻度一点, 可以1对1。于是有了现在的《策马守天关》!!!欢迎来体验!
Why similar: Action RTS 40.4% ★, Tower Defense 34%, Strategy 25.6%
Spoids is a challenging throwback to the original brand of tower defense games. Command the Remote Defense Space Station and respond to distress calls of those who are being attacked by the invaders. Travel from planet to planet using your powerful arsenal to hold back the Spoids.
Why similar: Tower Defense 43.3%, Strategy 35.2%, Action 15.6%, Sci-fi 6%
Experience cinematic space warfare in SALVO, an action packed real-time tactical combat simulator. Command your flagship and engage in intense battles in a war-torn solar system. Play a story-driven campaign, or forge your own destiny across the dangerous frontiers.
Why similar: Action RTS 37.1% ★, Strategy 20.1%, Space Sim 19% ★, Naval Combat 8.6% ★, Space 6.3%
This chaotic fast-paced planetary defense game will have you shoot, jump, dash, and teleport across a fully destructible planet to fend off enemies flying in from all directions. Switch between multiple unique turrets, upgraded to suit your play style, for eye-popping synergetic plays!
Why similar: Tower Defense 33.8%, Action RTS 28.9% ★, Strategy 16.1%, Action 12.1%, Space 8.6%
Cozy tower defense meets stylistic futuristic steampunk. Manage resources, buildings & towers. Unlock perks to further specialize yourself. Plan your defense & survive all enemy waves.
Why similar: Action RTS 42.7% ★, Tower Defense 29.4%, Strategy 16.8%, Stylized 5.7%, 3D 2.7%
A survival RTS game where you defend your village against relentless waves of Norse mythological creatures. Build defenses, train warriors, and gather resources to survive as long as possible. If your Town Hall falls, it's game over. How long will you last?
Why similar: Action RTS 39.7% ★, Tower Defense 29.2%, Strategy 14%, Action 5.6%, Stylized 5%
Sci-fi tower defense where you create your own maze, manage drones and power levels, and harvest for resources. Upgrade your turrets, buildings and ground units. Upgrade and buy new vehicles and motherships.
Why similar: Tower Defense 51.2%, Strategy 26.1%, Sci-fi 13.5%, 3D 7.4%, Singleplayer 1.8%
Use your towers to build a maze to kite the enemies to make more damage. But don’t block their way or they will go aggro on you! Use the checkpoints to have the enemies walk longer routes through your maze. Build your own maps in the map editor.
Why similar: Action RTS 39.5% ★, Tower Defense 32.2%, Strategy 23.4%, 3D 4.5%, Singleplayer 0.4%
Fat Chicken is a REVERSE TOWER DEFENSE game where you fatten up farm animals for slaughter by pumping them full of hormones, overfeeding them and basting them with antibiotics to keep them alive so they're worth more when you turn 'em into tasty, tasty packaged meat...it's what's for dinner!
Why similar: Tower Defense 40.9%, Strategy 39.5%, Action 19.5%
Get ready for modern battles! Defend your islands against evil invaders in jungles! Your team will consist of modern snipers, gunners, rockets, ice towers and other great things. A deep conflict has been brewing between you and the evil invaders. Fight to protect your freedom and liberty.
Why similar: Tower Defense 51.4%, Strategy 35.3%, Action 13.3%
Master strategic gameplay as you build, train, and upgrade units to protect your base. With an immersive storyline, stunning visuals, and easy controls, it's an epic battle for survival!
Why similar: Action RTS 41.4% ★, Tower Defense 30.8%, Strategy 15.1%, Action 6.9%, 3D 4.4%
Secret File is an Action Strategy Game. The military team will have to overcome huge distances and repel the attacks of hordes of infected every night. Build fortifications, use different tactics, combine weapons and fight off numerous enemies!
Why similar: Action RTS 41.8% ★, Tower Defense 28.9%, Strategy 17.8%, Action 7.5%, 3D 4%
Defend the solar system from fearsome aliens by sending satellites into orbit in revolutionary tower defense action!
Why similar: Tower Defense 65.3%, Strategy 19%, Action 7%, Sci-fi 5.8%, Space 2.9%
Lose yourself in an indie solo-dev. treasure that harkens back to arcade classics! All while thumping along to killer retro-inspired beats by Ovani sound. Embark on an epic tower defense adventure against awe-inspiring machine monstrosities, made by a devoted gamer for devoted gamers.
Why similar: Action RTS 41% ★, Tower Defense 30.3%, Strategy 14.9%, Sci-fi 7%, Action 5%
Controware is a game that will take you into the fascinating world of space warfare and allow you to become a real warlord.
Why similar: Action RTS 33.5% ★, Tower Defense 32.4%, Strategy 25.1%, Space 5.3%, Combat 3.2%
Great strategy is timeless. Build, adapt, and defend across dynamic maps, solo or online - every session brings new strategies, new solutions, and new surprises. Now is the perfect time to enter the grid.
Why similar: Tower Defense 61.5%, Strategy 29.6%, Sci-fi 5.3%, Space 3.2%, Singleplayer 0.4%