Games Like Fortified

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: Action 41%, Tower Defense 34.7%, Co-op 10.4%, Strategy 3.8%, Multiplayer 2.3%

Why You'll Like It: This is the quintessential first-person shooter and tower defense hybrid that mirrors the active combat and strategic building loop of Fortified.

Join The Mobile Trench Brigade and protect humanity from the evil Monovision menace!

Why similar: Action 62.2%, Tower Defense 20.7%, Co-op 7%, Third-Person Shooter 5%, Strategy 4.6%

Why You'll Like It: Developed by Double Fine, this game features a similar blend of mech-based third-person combat and tactical tower defense against waves of enemies.

Dungeon Defenders: Awakened is co-op Tower Defense combined with epic Action RPG combat. You’re able to join forces with up to four players to take on a never-ending army of orcs, demons, and dragons! Are your defenses strong enough to save the world of Etheria?

Why similar: Tower Defense 46%, Co-op 23.7%, Multiplayer 11.6%, Strategy 8.7%, Online Co-Op 7.8%

Why You'll Like It: This title excels at mixing character-based action RPG elements with deep tower defense mechanics in a cooperative multiplayer setting.

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: Action 49%, Tower Defense 25.8%, Co-op 8%, Aliens 6.9%, Strategy 4.4%

Why You'll Like It: This game uniquely blends top-down twin-stick shooting with tower defense, requiring you to actively destroy enemies while managing your maze of turrets.

SENTRY is an action-defense first person shooter where you defend your spaceship against invading aliens. Plot an escape route through hostile space and battle the enemy across your vessel with the support of traps, turrets and environmental destruction.

Why similar: Action 55.3%, Tower Defense 26.6%, Aliens 7.3%, Strategy 5.6%, Sci-fi 3.7%

Why You'll Like It: A modern take on the genre that combines first-person shooter mechanics with strategic defense, focusing on defending a ship from alien invaders.

You’ve tossed, burned and sliced them by the thousands – now orcs must die more than ever before! Grab a friend and slay orcs in untold numbers in this sequel to the 2011 AIAS Strategy Game of the Year from Robot Entertainment.

Why similar: Action 47.1%, Tower Defense 28.7%, Co-op 9.8%, Third-Person Shooter 4.6%, Strategy 3.3%

Why You'll Like It: It offers a highly polished experience where you must balance setting up elaborate trap networks with active, high-intensity combat to stop incoming hordes.

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: Action 37.6%, Tower Defense 30.1%, Co-op 13%, Third-Person Shooter 9.4%, Strategy 4.2%

Why You'll Like It: The latest entry in the series expands on the hybrid formula with massive scale battles that feel very similar to the frantic defense missions in Fortified.

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: Action 60.3%, Tower Defense 23.2%, Strategy 7.6%, Aliens 4.6%, Sci-fi 2.3%

Why You'll Like It: While more strategy-focused, it captures the feeling of holding off overwhelming alien swarms through a mix of tactical positioning and active combat.

Colony Siege combines the best of RTS and tower defense, including base building, mazing, and unit physics. Defend Earth's remaining colonies using an arsenal of deadly weapons to torch, slice, throw, and impale swarms of alien invaders.

Why similar: Tower Defense 45%, Strategy 25.3%, Co-op 16%, Sci-fi 5.2%, Multiplayer 3.8%

Why You'll Like It: It focuses on large-scale sci-fi defense where you must manage resources and build defenses while engaging in tactical combat.

Face the gates of Hell in a fusion of third-person action, RPG and Tower Defence. Repel the demons alone or in co-op by building defences. Upgrade powerful units to help you in battle, before jumping into the fight yourself, with an arsenal of skills and weapons to rip apart the oncoming swarm.

Why similar: Action 58.4%, Tower Defense 20.5%, Co-op 9.5%, Strategy 4.6%, Multiplayer 4.1%

Why You'll Like It: This title blends action-RPG hero combat with tower defense, tasking you with defending against massive demon armies.

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 62.2%, Multiplayer 16.2%, Online Co-Op 11.6%, Strategy 10.1%

Why You'll Like It: This game combines base building and tower defense with intense action-RPG combat, offering a more expansive sci-fi survival experience.

Iron Grip: Warlord invigorates tower defense with first-person shooter elements to give a new twist to the genre.It puts you in the heat of the battle, fighting off hordes of AI-controlled invaders. Play alone or with friends, in a diverse and challenging struggle to save all of Atelia.

Why similar: Action 75.6%, Tower Defense 17.6%, Co-op 4.3%, Indie 2.5%

Why You'll Like It: An older but effective hybrid that allows players to build defenses and fight from a first-person perspective during intense sieges.

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

Why similar: Action 68%, Tower Defense 25.2%, Strategy 6.7%

Why You'll Like It: It captures the charm of historical-themed defense while allowing you to take direct control of individual units and turrets to fight off waves.

2280 A.D. The last few survivors of a ruined Earth seek a new home: Mars, a planet whose inhabitants didn't take too kindly to outsiders. The Red Solstice is a tense, tactical, squad-based action game. Fight to survive with up to 8 players in co-op, or lead your own squad in single-player mode.

Why similar: Co-op 30.4%, Aliens 25.7%, Strategy 14.3%, Multiplayer 12.2%, Sci-fi 9.7%

Why You'll Like It: A tactical squad-based game that captures the sci-fi atmosphere and intense cooperative combat found in Fortified.

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: Action 56.9%, Tower Defense 26.9%, Aliens 7.7%, Strategy 5.3%, Sci-fi 3.2%

Why You'll Like It: Developed by Stardock, this game focuses on massive-scale tower defense against thousands of enemies, emphasizing strategic planning.

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: Action 57.9%, Tower Defense 25.1%, Aliens 8.1%, Strategy 5.2%, Sci-fi 3.6%

Why You'll Like It: A high-quality tower defense game that emphasizes survival and tactical deployment against persistent sci-fi threats.

Brace yourself for a brand new action-packed Open World. Explore a huge world to gather materials for gear and defenses. Use everything at your disposal to defend your bases and defeat hordes of hostile monsters. Play solo or up to 8-player online!

Why similar: Action 52.5%, Tower Defense 21.4%, Co-op 10%, Multiplayer 5%, Strategy 3.9%

Why You'll Like It: This open-world action game incorporates significant tower defense elements as you protect your base from alien wildlife.

Starship Troopers: Extermination is a 16-player co-op FPS that puts you on the far-off frontlines of an all-out battle against the Bugs! Squad up, grab your rifle, and do your part as an elite Deep Space Vanguard Trooper to take back planets from the Arachnid threat!

Why similar: Action 63.7%, Co-op 11.5%, Aliens 10.1%, Multiplayer 5.1%, Online Co-Op 3.7%

Why You'll Like It: This game captures the scale of defending against massive alien swarms with a focus on cooperative building and defensive positioning.

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: Action 74.6%, Tower Defense 16.5%, Strategy 6.1%, Indie 2.8%

Why You'll Like It: A straightforward but effective indie title that combines classic tower defense with active shooter elements against robotic foes.

Explore, loot, and rush back to defend your ship against alien hordes. Solo or 4-player coop, grow stronger run after run in this frantic action roguelite with a touch of tower defense.

Why similar: Action 59.6%, Tower Defense 21.7%, Co-op 11.1%, Multiplayer 4.4%, Online Co-Op 3.1%

Why You'll Like It: This cooperative roguelite blends bullet-heaven action with tower defense elements for a chaotic and fun experience.

Control a fully armed Mech and fight through cyberpunk cities, military bases and industrial ruins. Capture and defend territories, build turrets and structures, and wage war against powerful enemies!

Why similar: Tower Defense 50.3%, Action 36.2%, Shooter 5.1%, Sci-fi 4.6%, Strategy 2.7%

Why You'll Like It: A top-down shooter that integrates tower defense mechanics, focusing on defending against waves of robots in a sci-fi setting.

Help the Bug Heroes defend their food stash from hordes of enemies! Control powerful heroes, build your defenses, level up your heroes and towers, equip upgrades, and more!

Why similar: Action 70.8%, Tower Defense 16%, Third-Person Shooter 6.9%, Strategy 5.2%, Third Person 0.6%

Why You'll Like It: A unique take on the genre that allows you to control powerful heroes directly on the battlefield while managing your defensive towers.

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: Action 45.9%, Tower Defense 29.2%, Aliens 8.1%, Strategy 5.5%, Multiplayer 4.2%

Why You'll Like It: A modern 3D tower defense game that offers deep customization and strategic depth for fans of the genre.

Artificial Defense is a one man made, real time strategy game combining orbital shooter and tower defense components within an electrifying, virtual reality setting. You are the machine, a mighty computer-system defending its servers against swarms of intruding creeps.

Why similar: Action 78.1%, Tower Defense 11.5%, Strategy 6.9%, Indie 3.4%

Why You'll Like It: This game focuses on the strategic placement of defenses while allowing the player to engage in active combat to support their structures.

Galactic Missile Defense is a shooter and tower defense game, where you must protect Earth from the invading Martians that declared war on our planet just because a space rover accidentally ruined their picnic!

Why similar: Action 55.4%, Tower Defense 23.8%, Aliens 12%, Strategy 4.6%, Shooter 2.4%

Why You'll Like It: It offers a fast-paced arcade experience where you must actively shoot down incoming threats while managing your defensive grid.

NOW AVAILABLE! When the Earth falls to an extra-terrestrial invasion, humanity becomes an endangered species. Earthfall is a four-player cooperative shooter that challenges players to survive hordes of ruthless alien drones and their inscrutable masters.

Why similar: Action 72%, Co-op 11.2%, Aliens 7.6%, Online Co-Op 3.4%, Multiplayer 2.7%

Why You'll Like It: While primarily a co-op shooter, it features base-defense segments that require the same frantic coordination against alien swarms.

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: Action 80.5%, Aliens 12%, Sci-fi 4.5%, Indie 3%

Why You'll Like It: A roguelite shooter that focuses on defending against alien waves, emphasizing fast-paced combat and character progression.

"VOIDCRISIS" is a four-player tower offense game on an undulating battlefield. Operate combat bio-machines called VA (Vital Armor) drawn with dynamic mechanical art shaders and work together to clear high-difficulty stages.

Why similar: Action 48.8%, Tower Defense 19.2%, Third-Person Shooter 10.6%, Co-op 9.5%, Multiplayer 4.4%

Why You'll Like It: A sci-fi action-RTS that features mech combat and defensive strategy, perfect for those who enjoy the robot-themed action of Fortified.

Towers of Altrac is a 3D Tower Defense cooperation game for up to 4 players with an innovative A.I. system “S.A.D.”, which makes your enemies intelligent . Fight against the horde of Goblins, Orcs, Dragons and other monsters on 62 unique maps. The game is for every level of player experience.

Why similar: Action 58.4%, Tower Defense 23.9%, Strategy 5.4%, Co-op 5%, Multiplayer 4.5%

Why You'll Like It: It provides a massive scale of tower defense gameplay with a focus on strategic variety and enemy management.

Fortify is a real-time strategy game with a tower defense twist. Defend your castle from attacking monsters and siege weapons by using ranged and melee defenders, catapults, cannons, oil fields and more. You start at the iron age, advancing to the medieval age, and later, the imperial age.

Why similar: Action 88.5%, Strategy 7.8%, Indie 3.6%

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: Action 56.8%, Tower Defense 15.2%, Co-op 9.9%, Aliens 5.2%, Strategy 4.5%

Build bases, lead an army of robots, and squash brains in this radical hybrid between RTS and third-person shooter. Join a duo of quirky heroes on a mission to save Earth, smash an evil alien corporation, and complete their comic book collection.

Why similar: Action 59.5%, Co-op 12.7%, Aliens 8.8%, Multiplayer 6.1%, Strategy 5.5%

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: Action 47.6%, Tower Defense 34.5%, Aliens 8.5%, Strategy 4.8%, Sci-fi 2.9%

Control the mysterious robot army to resist falling giant aliens.

Why similar: Action 97.4%, Indie 2.6%

Stellarcraft is a sci-fi tower defense adventure: explore alien planets, gather resources, build defenses, and fend off waves of enemies, solo or in 4-player co-op. 🚀

Why similar: Co-op 29.9%, Action 20.4%, Strategy 13.3%, Multiplayer 11.6%, Online Co-Op 9%

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 62.2%, Multiplayer 15.5%, Online Co-Op 10.4%, Strategy 9.4%, Third Person 2.5%

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: Action 66.8%, Tower Defense 18.7%, Third-Person Shooter 10%, Shooter 1.7%, Strategy 1.2%

Based on the inhospitable frontier world of Mars, against the backdrop of a bacterial outbreak, Deadstone offers a compelling blend of frantic combat and tower defense, backed by a highly nuanced character development system and strategic elements of resource management.

Why similar: Action 90.5%, Strategy 4.7%, Sci-fi 2.4%, Indie 2.4%

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: Action 56%, Tower Defense 28.6%, Strategy 6.5%, Aliens 4.3%, Indie 2.9%

Our world is in danger! Grab your gun and stop these uninvited guests!

Why similar: Action 72.1%, Tower Defense 10.8%, Co-op 8.2%, Multiplayer 3.1%, Indie 2.9%

A Tower Defense hybrid where survival depends on strategy and firepower. Build turrets, mine resources, and hold the line against relentless AI swarms. Switch instantly between commanding the battlefield in RTS view or fighting on the ground in FPS combat.

Why similar: Action 62.7%, Tower Defense 25.7%, Aliens 9%, Shooter 2.5%

Lead an armored squad through the perils of this reversed tower defense action-strategy game!

Why similar: Action 59.1%, Tower Defense 22.9%, Strategy 9.8%, Aliens 2.8%, Indie 2.7%

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: Strategy 30.6%, Aliens 23.9%, Tower Defense 15.8%, Sci-fi 15.6%, Indie 14.1%

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: Action 64.5%, Tower Defense 28.8%, Strategy 6.6%

Farm, Build, Defend, in the Galaxy's only Arcade-Tower-Defense.

Why similar: Action 47.3%, Tower Defense 21.7%, Third-Person Shooter 11.3%, Aliens 5%, Co-op 4.6%

Thousands of giant insects and aliens once again ravage the earth, and only the Earth Defense Force can stop them.

Why similar: Action 76.4%, Third-Person Shooter 10.8%, Co-op 6.8%, Aliens 2.3%, Online Co-Op 1.7%

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: Action 55.5%, Tower Defense 33.4%, Strategy 6.6%, Sci-fi 2.6%, Indie 2%

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: Action 51.8%, Tower Defense 25.3%, Co-op 12.2%, Strategy 4.9%, Sci-fi 3.6%

Defend the shores of Gallipoli against landing forces in this WWI FPS game, as the enemy attacks you with troops, armored cars, planes, battleships and more! Use the iconic WWI weapons, prepare your defenses with mines, explosives and bonuses!

Why similar: Action 53.9%, Tower Defense 21.4%, Co-op 9.7%, Third-Person Shooter 9.4%, Online Co-Op 3.3%

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 69.8%, Strategy 13.1%, Aliens 12.3%, Sci-fi 4.8%

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: Action 63.4%, Tower Defense 27%, Strategy 6.4%, Indie 2.3%, Sci-fi 0.9%

From Space is a solo and co-op action-shooter for squads up to four players. Take on the challenge of liberating the earth from an alien infestation with your friends, using over-the-top weaponry in a post-apocalyptic world with awesomely stylized graphics. The apocalypse has never been so much fun!

Why similar: Action 69.8%, Co-op 13.1%, Multiplayer 5.6%, Online Co-Op 3.9%, Sci-fi 3.1%

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: Action 62.3%, Tower Defense 24.9%, Aliens 7.4%, Strategy 5.4%

Take to the streets for intense close quarters combat, where a team's survival depends upon securing crucial strongholds and destroying enemy supply in this multiplayer and cooperative Source Engine based experience.

Why similar: Action 74.2%, Co-op 9%, Multiplayer 7.4%, Shooter 3.1%, Strategy 3%

Aliens Invaded Our Planet is a Multiplayer / CO-OP (Up to 6P) FPS & Arcade Style Action game, the game is about alien invasion in 1900s Richalley Town. Shoot and run for your life against the aliens!

Why similar: Action 96.4%, Indie 3.6%

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

Why similar: Action 44.7%, Tower Defense 41.8%, Strategy 5.7%, Aliens 3.8%, Sci-fi 2.1%

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: Action 68.4%, Tower Defense 19.2%, Strategy 7.3%, Indie 3.5%, Sci-fi 1.5%

The replicator robots are back! It's 2528. The machines are increasingly infecting the planets with genetically modified monsters. Challenge them and try to stop the onslaught. Upgrade buildings and heroes, mine resources, discover technology and fight to save humanity!

Why similar: Tower Defense 58.5%, Action 28.4%, Strategy 12%, Indie 1.1%

A fast paced multiplayer shooter that pits aliens against humans in a strategic and action-packed struggle for survival!

Why similar: Action 65.3%, Aliens 8%, Multiplayer 7.5%, Strategy 6.9%, Co-op 5.1%