Games Like SENTRY

Sanctum 2 is the sequel to the world’s first Tower Defense/FPS hybrid game. Pick from four unique character classes and embark on a mission to protect the oxygen-producing Cores from hordes of deadly aliens who are threatened by their existence.

Why similar: Tower Defense 48.4%, FPS 20.6%, Strategy 6.9%, Sci-fi 6.6%, Aliens 4.3%

Why You'll Like It: This is the definitive first-person shooter and tower defense hybrid that mirrors the core gameplay loop of SENTRY.

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?

Why similar: Tower Defense 59.8%, Strategy 15.6%, Sci-fi 12.3%, Space 6.8%, Action 4.6%

Why You'll Like It: You control a powerful defense platform against massive alien invasions, emphasizing tactical strategy and heavy weaponry.

Defend against waves of alien monsters in this unique roguelike action miner. Dig for resources, collect useful gadgets, and upgrade equipment to increase odds of survival – just hurry back before your dome is destroyed!

Why similar: Tower Defense 32.3%, Sci-fi 16%, Space 15.3%, Roguelike 15%, Combat 8.4%

Why You'll Like It: This game captures the tension of defending a central structure against waves of enemies while managing resources and upgrades.

Slice, burn, toss, zap, grind and gib massive hordes of repugnant orcs in this long-awaited successor to the award-winning Orcs Must Die! series.

Why similar: Tower Defense 67.8%, Strategy 12.4%, Stylized 5.6%, Combat 5%, 3D 4.5%

Why You'll Like It: It offers a polished action-defense experience where you must actively participate in combat alongside your traps and turrets.

Stellar Initiative is a roguelike tower defense game where you land on the planet and use your orbit ship to deliver buildings and support you with fire. Complete missions, install new upgrades, discover powerful artifacts, and find the best strategy!

Why similar: Tower Defense 39.3%, Sci-fi 13.3%, Aliens 12.6%, Roguelike 11.1%, Strategy 9.9%

Why You'll Like It: A tactical tower defense game that focuses on sci-fi combat and strategic positioning against overwhelming odds.

Lumencraft is a unique combination of a top-down, rogue-like shooter and base building with tower defense elements. Dig and light up dark halls of a fully destructible environment on procedurally generated maps and campaign levels to find precious Lumen - humanity's only chance for survival.

Why similar: Tower Defense 39%, Survival 17.9%, Strategy 10.9%, Shooter 8.9%, Colorful 8.7%

Why You'll Like It: It blends top-down action with destructible environments and tower defense, forcing you to dig and defend simultaneously.

The Riftbreaker is a solo or Co-op base-building, survival game with Action-RPG elements for up to 4 players. Hack & slash countless hordes of enemies. Build up your base, craft powerful weapons and research new inventions to survive.

Why similar: Tower Defense 58.1%, Survival 27.6%, Strategy 12.5%, Singleplayer 1.8%

Why You'll Like It: This title masterfully combines base-building and tower defense with intense action-RPG combat in a hostile alien environment.

Get ready for the ULTIMATE tower defense onslaught. Build, deploy, research and upgrade your defenses in this epic, old school RTS inspired sci-fi adventure.

Why similar: Tower Defense 31.2%, Survival 13.8%, Aliens 13.7%, Sci-fi 11.9%, Space 10.8%

Why You'll Like It: A sci-fi tower defense game that focuses on survival and tactical placement against relentless waves of enemies.

Create a hero from one of four classes to save Etheria in this 4-player coop Tower Defense Action-RPG. Includes Steam exclusive Portal gun & TF2 familiars!

Why similar: Tower Defense 59.6%, Survival 20.2%, Strategy 11.8%, 3D 6.2%, Singleplayer 2.2%

Why You'll Like It: A classic cooperative action-tower defense game that emphasizes character-based combat and strategic trap placement.

Space Run is a «real-time spaceship construction strategy game». Space Run takes the well-known Tower Defense-style gameplay and twists it, challenging you to manage and protect a spaceship and its cargo against the hazards of deep space!

Why similar: Tower Defense 57%, Space 20.1%, Strategy 12.4%, Sci-fi 9.2%, Action 1%

Why You'll Like It: A unique take on tower defense where you must protect a spaceship while managing its layout and defenses in real-time.

You have 9 days to find a safe place on the planet. Your ship is low on fuel and you have to land. Setup sentry guns around you to defend yourself while you collect more fuel for the ship. AI controlled Drones and Tanks attack you trying to find weaknesses in your defenses.

Why similar: Tower Defense 40.8%, FPS 13.6%, Strategy 12.7%, Survival 10.3%, Sci-fi 10.3%

Why You'll Like It: A sci-fi action-strategy game where you must defend your base against AI-controlled invaders.

Cluckmech Oasis, a top-down shooting Roguelike tower defense game. Play as the Warcluck and lead your team of animal heroes in a fight for survival. Collect, build and upgrade defenses, and engage in intense battle against waves of plant enemies.

Why similar: Tower Defense 33.3%, Roguelite 10.7%, Roguelike 10.4%, Strategy 9.7%, Survival 7.7%

Why You'll Like It: A strategy-focused tower defense game that features unique sci-fi elements and base-building mechanics.

A roguelike tower defense where you control a single tower to fight against hordes of aliens coming from all directions. Pick your tower, equip up to 4 skills, and choose from a variety of traits and unique effect items to craft powerful builds that lead you to victory.

Why similar: Tower Defense 43.4%, Survival 18.5%, Roguelite 15.3%, Strategy 10.5%, Roguelike 8.7%

Why You'll Like It: This title blends roguelike elements with tower defense, offering a fast-paced and replayable experience.

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

Why similar: Tower Defense 66.9%, Strategy 16.9%, Survival 10.1%, Pixel Graphics 3.7%, Action 1.5%

Why You'll Like It: This game adds a layer of automation and resource management to the tower defense genre, set in a harsh sci-fi world.

Repel the Rifts is a roguelite tower defense game where you lead a commander through an alien world, uncovering new terrain each wave, drafting powerful upgrades, and constructing defenses to hold back the chaos.

Why similar: Tower Defense 39%, Sci-fi 13.9%, Space 13.6%, Roguelite 11%, Roguelike 11%

Why You'll Like It: A tactical tower defense game featuring mechs and sci-fi combat that requires careful planning and execution.

Deep Rock Galactic is a 1-4 player co-op FPS featuring dwarven space miners, procedurally-generated destructible environments, and endless hordes of alien monsters. Explore cave systems, mine for minerals, and work together to survive!

Why similar: FPS 26.6%, Space 15.8%, Sci-fi 13.9%, Survival 13.8%, Shooter 9.9%

Why You'll Like It: While more action-focused, it captures the sci-fi survival and wave-based defense feel perfectly in a cooperative setting.

Command your TOY SOLDIERS in epic, action-packed battles.

Why similar: Tower Defense 67.6%, Strategy 23.5%, Action 8.3%, Singleplayer 0.6%

Why You'll Like It: It provides a unique perspective on tower defense by allowing you to take direct control of individual units and turrets.

Super Sanctum TD is a retro-styled Tower Defense game that focuses on strategy, customization and replayability. Build advanced mazes and construct powerful towers to prevent alien hordes from reaching the Core!

Why similar: Tower Defense 52.2%, Aliens 17.5%, Sci-fi 11.5%, Strategy 9.4%, Pixel Graphics 4.9%

Why You'll Like It: A more traditional tower defense experience that shares the sci-fi aesthetic and strategic depth of the Sanctum series.

Defend against thousands of enemies in this explosive tower defense game. Deploy upgradable towers and unleash powerful orbital abilities as you try to protect Earth's first colony world from destruction.

Why similar: Tower Defense 50.1%, Sci-fi 15.4%, Strategy 13%, Colorful 9.2%, 3D 7.6%

Why You'll Like It: A real-time strategy tower defense game that focuses on large-scale battles against alien fleets.

Co-operative top-down shooter game available for free. An epic bug hunt featuring a unique blend of co-op play and squad-level tactics.

Why similar: Aliens 36.1%, Sci-fi 23%, Shooter 14.5%, First-Person 13.2%, Combat 13.1%

Why You'll Like It: A top-down tactical shooter that focuses on squad-based defense and survival against alien swarms.

Let Them Come is a fast paced pixel art shoot ‘em up. Twitchy trigger fingers and focused battle tactics are the order of the day as wave after wave of alien-like creatures try to take you down.

Why similar: Tower Defense 35.8%, Aliens 18.1%, Survival 13%, Sci-fi 8.3%, Shooter 7.9%

Why You'll Like It: A frantic action game that focuses on holding your ground against endless waves of enemies using various turrets.

MILLIONS OF ALIENS WILL DIE!Radiant Defense is a tower defense game set in a vibrant universe invaded by countless alien hordes.Build your space fortress any way you wish, set up wide variety of weapons and traps and let the invasions begin!

Why similar: Tower Defense 41.1%, Space 16.3%, Strategy 12.3%, Colorful 9%, Aliens 8.6%

Why You'll Like It: A colorful and tactical tower defense game set in a vibrant sci-fi universe.

FortressCraft Evolved is a unique blend of Voxel Landscapes, Tower Defense, Crafting, Logistics, Exploration, Combat and Assembly lines. Players begin by crash-landing on a strange alien world, left with only a small handful of starting machines.

Why similar: Survival 38.1%, Tower Defense 26.4%, Strategy 18.3%, Sci-fi 16.3%, Singleplayer 0.9%

Why You'll Like It: This game emphasizes massive-scale base building and defense against waves of enemies in a sci-fi setting.

Space Raiders in Space is a wave defense roguelike mixing squad management and tower defence mechanics. Command your almost competent crew to loot weapons and supplies, build defenses, and fight their way through the Bugpocalypse.

Why similar: Tower Defense 34.2%, Sci-fi 12.9%, Roguelite 11.9%, Roguelike 10.7%, Strategy 10.6%

Why You'll Like It: A strategy-heavy game that focuses on defending your crew and base against waves of alien invaders.

1-Bit Roguelite Action Shooter.

Why similar: Aliens 18.3%, Inventory Management 13.4%, Sci-fi 13.3%, Roguelite 12.2%, Stylized 10.1%

Why You'll Like It: A sci-fi shooter that incorporates roguelite elements and intense combat against alien forces.

Battle massive hordes of alien monsters to secure humanity's presence on planet Gore. Upgrade your base, hire troops, and install turrets to fight back the ever growing waves of aliens.

Why similar: Tower Defense 32.3%, Survival 14.6%, Roguelite 13.3%, Aliens 11%, Sci-fi 8.8%

Why You'll Like It: A high-octane action game that focuses on surviving waves of enemies with a focus on fast-paced combat.

Build and design the terrain while defending your stronghold against alien invasion in this unique Roguelike tower defense. Choose from 30 heroes, survive enemy waves, and upgrade a variety of destructive towers to hold the line!

Why similar: Tower Defense 43.1%, Roguelite 12.1%, Roguelike 11%, Strategy 10.7%, Aliens 10.4%

You are Earth's last line of defense in a relentless alien invasion. Experience intense top-down roguelite action across diverse landscapes, fighting invaders with a versatile arsenal. Outsmart, outgun, and survive your foes. Every run increases the challenge - so adapt, evolve, dominate!

Why similar: Aliens 19.8%, Survival 18.3%, Roguelite 15.4%, Sci-fi 14.5%, Roguelike 11.9%

Why You'll Like It: A fast-paced action game that focuses on surviving waves of alien attacks with various defensive tools.

Explore alien planets to mine resources, kill alien insects, build defense turrets, and survive waves of insect attacks across the galactic frontier. Astro Looter combines elements of survival, roguelike, and tower defense in a top-down shooter.

Why similar: Tower Defense 28.5%, FPS 16.6%, Survival 14.1%, Roguelite 13.7%, Roguelike 10.7%

Why You'll Like It: A sci-fi action game that emphasizes looting and defending against waves of enemies in space.

Space resources are the battleground for warring factions. As a Space Defense Officer, protect your faction's assets in a vast, hostile universe. Allocate resources, upgrade defenses, and repel relentless enemy attacks! With over 50 unique units and deep strategy, experience real-time tower defense!

Why similar: Tower Defense 40.1%, Space 17.4%, Roguelite 16.2%, Sci-fi 14.3%, Strategy 10.8%

A tower defense action roguelike where you control a single tower to fight against hordes of aliens coming from all directions. Pick your tower, equip up to 4 skills, and choose from a variety of traits and items to craft powerful builds that lead you to victory.

Why similar: Tower Defense 39.2%, Aliens 15.9%, Roguelite 14.4%, Survival 14.1%, Strategy 11%

Command an ancient starship and fight your way to the heart of a dying Empire. Fend off attacks from demented cultists, craven space pirates, and xenophobic Imperial soldiers. Discover powerful artifacts and use them to build your ship into a fearsome war engine.

Why similar: Space 27.8%, Roguelite 21.1%, Sci-fi 17.2%, Strategy 14.1%, Roguelike 13.8%

Deadzone: Rogue is a roguelite FPS set in space. Blast through swarms of hostile machines, combine powerful augments and elements to forge your build, and grow stronger with each run — solo or in co-op.

Why similar: FPS 28%, Roguelike 14.5%, Roguelite 14.5%, Sci-fi 14.4%, Shooter 9.4%

Command Mobile Outpost and take XEN Firearm to venture deep into the Signet surveillance off-limit area. Collect unique Weapon Units. Amp up the firepower of the Outpost that fights with you. This is an FTD game - FPS, Tower Defense, Base Building and much more all at the same time.

Why similar: Tower Defense 31.6%, FPS 18.9%, Survival 12.5%, Sci-fi 11.9%, Strategy 8%

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!

Why similar: Tower Defense 31.7%, Survival 14.9%, Space 13.2%, Sci-fi 12.2%, Strategy 8.8%

Stranded on an alien planet, you must defend your Powercore! Use your weapons to fight hordes of alien enemies and strategically use traps in this new FPS tower-defense survival game!

Why similar: Tower Defense 26.5%, Aliens 12.3%, Survival 11.5%, FPS 10.4%, Strategy 10.2%

Employ lethal turrets, traps, and gadgets to defend against an onslaught of evolving creeps! Step into a twisted, hyper 3D, mind bending realm. Upgrade and adapt your defenses. Become a master maze crafter. Collect bizarre artifacts. Rush creeps for lucrative rewards, and succumb to greed!

Why similar: Tower Defense 36.3%, Aliens 13.7%, Sci-fi 12.2%, Survival 11.5%, Strategy 9%

Command a team of 5 elite soldiers against an alien horde of 100,000. Surrounded on all sides, you must outmaneuver and outsmart the enemy.

Why similar: Tower Defense 47.5%, Strategy 20.3%, Aliens 12.8%, Sci-fi 12.2%, Action 5.6%

A fast-paced first-person shooter where you master gun recoil to leap across platforms, battle various enemies, and upgrade your weapon to escape an overrun space station.

Why similar: FPS 24.4%, Roguelite 13%, Shooter 10%, Aliens 9%, Space 8.8%

Desperate Place is a strategic tower defense game where you play as a crew member who wakes up early on a damaged colonization starship. Stranded on an unknown planet, you must gather resources, repair the ship, and defend against alien monsters to survive and escape.

Why similar: Tower Defense 33.1%, Space 14.5%, Survival 14.4%, Sci-fi 12.3%, Strategy 9.4%

Craft Your Ultimate Circular Fortress! Dive into SHOOPER NOVA, where you choose props and components to build a unique fortress. Unlock combos to shape your strategy and battle style. Become an unstoppable barrage machine and obliterate waves of enemies from all directions!

Why similar: Tower Defense 36.9%, Roguelite 15.3%, Strategy 13%, Sci-fi 8.6%, Roguelike 7.6%

Tower Factory is a tower defense and automation game with roguelite elements. Optimize resource production using conveyor systems while defending against monster waves. Can you find and destroy the enemy tower before it's too late?

Why similar: Tower Defense 59.5%, Roguelite 19.1%, Roguelike 14.9%, Colorful 6.6%

Survivor Challenge TD - is a Tower Defense game where you manage a single tower and add upgrades to it. Buy abilities, enhance upgrades, and defeat the boss!

Why similar: Tower Defense 42.3%, Roguelite 13.5%, Stylized 10.4%, Strategy 9%, Combat 8.4%

Inspired by BioShock and System Shock 2, Void Bastards is a revolutionary new strategy-shooter that will test your wits as well as exercise your aim. Can you lead the misfit prisoners of the Void Ark through the derelict spaceships and myriad dangers of the Sargasso Nebula?

Why similar: FPS 21.6%, Space 13.1%, Sci-fi 11.1%, Roguelike 9.5%, Stylized 9.1%

Fast paced Bullet hell Roguelite FPS 🔴 Fight relentless machines driven by a hostile AI. Escape an endless cycle. Craft infinite weapon variants with deep gun modding. Forge deadly synergies. Carve your way out through enviro destruction /BREAK THE SYSTEM /BREAK FREE

Why similar: FPS 26.9%, Roguelite 15.3%, Sci-fi 14.6%, Roguelike 10.7%, Shooter 10.1%

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 71.3%, Strategy 21.5%, Action 7.2%

Choose a planet, build your fortress, and prepare for war. Arm yourself with powerful weapons, deploy troops, and defend your stronghold against relentless attacks. In this action-packed block-builder, survival is earned, and only the strongest will remain.

Why similar: Tower Defense 38.8%, FPS 26.7%, Shooter 8.7%, Action 6.4%, First-Person 5.7%

Action roguelike where you build and command your own spaceships. Battle enemies, explore planets and customize your ship on the fly. Make the best use of the quirky ship modules you find, ranging from slingshots to ion cannons, to try and avoid certain death.

Why similar: Aliens 22.4%, Space 21.1%, Roguelike 14.9%, Sci-fi 13.9%, Colorful 11.7%

Face the darkness in Moros Protocol, a pixel-painted sci-fi FPS roguelite. Survive the nightmare alone or with allies as you navigate the decaying warship, stalked by horrors and guided by a voice you don’t recognize. Adapt, upgrade, and push forward. You may be outnumbered, but not outmatched.

Why similar: FPS 21.5%, Space 13.3%, Roguelite 12.8%, Sci-fi 10.9%, Stylized 9.4%

Defend the solar system from fearsome aliens by sending satellites into orbit in revolutionary tower defense action!

Why similar: Tower Defense 64.2%, Strategy 11.4%, Sci-fi 8.5%, Aliens 7.9%, Space 4.9%

In Defendoooooor!!!, it's your job to fight an alien invasion.

Why similar: Tower Defense 44.3%, Sci-fi 19.8%, Action 15.2%, Shooter 11.3%, Pixel Graphics 7.4%

Explore and fight your way through a crashed human spaceship infested with relentless hordes of aliens as you become more powerful with exciting weapon upgrades and powerups in this retro inspired first-person shooter.

Why similar: FPS 22.1%, Aliens 15.4%, Sci-fi 10.7%, Space 10.6%, Stylized 9.2%

Unique fusion of a top-down shooter and tower defense strategy. You are the invader! Use destructive weapons or lead your enemies into a maze of towers. Strategize in the build mode by carefully selecting various types of alien towers or throw yourself right into the heat of the battle.

Why similar: Tower Defense 47.6%, Aliens 17.4%, Sci-fi 12%, Strategy 10.8%, Shooter 7%

This "space station builder simulation roguelite" puts you in charge of a space station. Fight off enemy ships, fleets and rival stations to dominate your corner of space. Build and upgrade your station, hire and manage your crew. Survive as long as you can.

Why similar: Space 23.2%, Survival 19.9%, Roguelite 19.1%, Strategy 14%, Roguelike 10.8%

Configure the weaponry on your ship to blast away enemies as you navigate through swarms of bullets and space battles. Each ship has unique customization options and playstyles.

Why similar: Space 23%, Sci-fi 21.5%, Roguelike 19.6%, Shooter 17.3%, Combat 9.6%

Defend Billy and his crew on their way to the extraction zone! You have been authorized to use the defense system. Protect them from giant bugs, malfunctioning droids and more...

Why similar: Sci-fi 20.6%, Strategy 20%, Stylized 18.7%, Aliens 16.4%, Tower Defense 7.9%

Fortified is an explosive strategy shooter where players will defend the Earth against a menacing Martian invasion in the 1950s. Play as one-of-four pulp inspired heroes as they fight swarms of terrifying robots with an arsenal of Cold War era weapons and experimental technology.

Why similar: Action 54.9%, Tower Defense 26.8%, Aliens 7.3%, Strategy 5.7%, Sci-fi 3.7%