Games Like Sentinel 3: Homeworld

Want a tactical and strategic tower defense challenge that's packed with options and upgrades? Take command of the dropship Sentinel and do battle across a vibrant sci-fi world.

Why similar: Tower Defense 60.4%, Strategy 24.5%, Indie 7.6%, Sci-fi 7.5%

Why You'll Like It: The direct sequel to the seed game, offering refined mechanics and a continuation of the core sci-fi tower defense experience.

Defense Grid: The Awakening is a unique spin on tower defense gameplay that will appeal to players of all skill levels. A horde of enemies is invading, and it's up to the player to stop them by strategically building fortification towers around their base.

Why similar: Tower Defense 87%, Strategy 8.4%, Sci-fi 2.9%, Indie 1.7%

Why You'll Like It: A classic sci-fi tower defense game that shares the same polished, strategic depth and immersive atmosphere as the Sentinel series.

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 78.8%, Strategy 16%, Indie 3.7%, Sci-fi 1.6%

Why You'll Like It: A high-action tower defense game set in the same sci-fi universe as the Anomaly series, focusing on fast-paced, aggressive defense.

Get ready to DEFEND THE WORLD! The biggest sequel in tower defense history is finally here: Fieldrunners 2 has arrived! From Subatomic Studios, creators of the award winning classic strategy game comes an all new adventure that was years in the making.

Why similar: Tower Defense 90.3%, Strategy 9.7%

Why You'll Like It: A highly polished, classic tower defense experience that emphasizes pathing and diverse weaponry.

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 80.3%, Strategy 11.8%, Sci-fi 4.7%, Indie 3.2%

Why You'll Like It: Combines traditional tower defense with twin-stick shooter action, allowing you to actively participate in the defense just like the power armor mechanics in Sentinel.

Real-time strategy battles in amazing sci-fi worlds! Command brave soldiers, mighty mechas and powerful aliens to face the greatest challenges in hostile alien worlds. The galaxy needs you!

Why similar: Strategy 59.6%, Sci-fi 28.3%, Indie 12.1%

Why You'll Like It: A sci-fi real-time strategy game that heavily emphasizes hero units and tactical positioning, mirroring the action-oriented feel of Sentinel 3.

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 87.4%, Strategy 8.2%, Sci-fi 2.8%, Indie 1.6%

Why You'll Like It: A unique hybrid that blends first-person shooter action with tower defense, perfect for players who enjoy being on the front lines.

Get ready for an epic journey to defend your kingdom against hordes of orcs, trolls, evil wizards and other nasty fiends using a vast arsenal of towers and spells at your command!Fight on forests, mountains and wastelands, customizing your defensive strategy with different tower upgrades and specializations!

Why similar: Tower Defense 88%, Strategy 10.2%, Indie 1.8%

Why You'll Like It: While fantasy-themed, this is the gold standard for hero-based tower defense and offers the same level of polish and tactical satisfaction.

Infinitode 2 - a strategy in the Tower Defense genre, in which the player will have to build towers to protect his base from endless waves of enemies. The game features huge maps, lots of towers, resource miners, upgrade tree and map editor.

Why similar: Tower Defense 85.1%, Strategy 14.9%

Why You'll Like It: Offers deep progression and massive upgrade trees within a clean, sci-fi aesthetic that rewards long-term strategic planning.

The sequel to the hit strategy game, with new weapons, landscapes, and options.

Why similar: Tower Defense 68.7%, Strategy 24.6%, Indie 6.7%

Why You'll Like It: A visually polished, modern tower defense game that focuses on tactical placement and managing diverse enemy waves.

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 79.1%, Strategy 14%, Sci-fi 7%

Why You'll Like It: A modern, high-quality sci-fi tower defense game that emphasizes survival and strategic unit deployment.

Creeper World 3 is what happens when cellular automata takes over a strategy simulation. Instead of discrete units that attack your base, a fluid-like substance spreads over the terraformable terrain. Your base, your weapons, your strategy... you must adapt them all.

Why similar: Tower Defense 86.4%, Strategy 9.6%, Sci-fi 2.3%, Indie 1.7%

Why You'll Like It: A unique strategy-tower defense hybrid where you fight against a fluid, encroaching enemy, offering a fresh take on the genre.

The ultimate mash-up of Real-time Strategy and Tower Defense!

Why similar: Tower Defense 82.6%, Strategy 11.2%, Sci-fi 3.1%, Indie 3%

Why You'll Like It: A strategic, sci-fi tower defense game that incorporates base-building and resource management elements.

Harvest: Massive Encounter is an award-winning real-time strategy game with battles of epic proportions and a unique style of resource management and exploration. Build power plants, mineral harvesters and defense towers and make sure they have sufficient energy to fend off endless hordes of evil aliens.

Why similar: Tower Defense 76.3%, Strategy 16.2%, Indie 4.7%, Sci-fi 2.9%

Why You'll Like It: A classic sci-fi tower defense game that focuses on resource management and defending against overwhelming odds.

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

Why similar: Tower Defense 67%, Strategy 24.1%, Sci-fi 4.7%, Indie 4.3%

Why You'll Like It: Provides a reverse-tower defense experience in a sci-fi setting, offering a great perspective on the genre's mechanics.

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 71.2%, Strategy 22.2%, Indie 6.6%

Why You'll Like It: A fast-paced, action-oriented tower defense game with a distinct sci-fi theme.

Defense Technica is the next evolution in hardcore tower defense strategy games. Protect the core from an onslaught of unrelenting biomechanical terrors with a powerful range of tower defense units – each with their own upgradable features and methods of attacks.

Why similar: Tower Defense 88%, Strategy 9.5%, Indie 2.5%

Why You'll Like It: A tactical sci-fi tower defense game that features path manipulation and complex enemy wave management.

The epic tower defense dark fantasy journey continues! Create powerful gems with various abilities and take on the battle against an endlessly flowing army of monsters, and face the growing darkness as you fight your way back towards the Spiritforge.

Why similar: Tower Defense 83.6%, Strategy 14.2%, Indie 2.2%

Why You'll Like It: Offers an incredibly deep and complex tower defense system that will appeal to players who enjoy min-maxing their defenses.

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 83.6%, Strategy 16.4%

Why You'll Like It: An action-oriented tower defense game with a sci-fi aesthetic that focuses on rapid-fire combat.

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

Why similar: Tower Defense 85.4%, Strategy 9.9%, Sci-fi 2.6%, Indie 2.2%

Why You'll Like It: A unique sci-fi tower defense game that introduces rotating orbital platforms to change your defensive strategy on the fly.

The Bloons are back and better than ever! Get ready for a massive 3D tower defense game designed to give you hours and hours of the best strategy gaming available.

Why similar: Tower Defense 86.8%, Strategy 13.2%

Why You'll Like It: The definitive modern tower defense game, offering immense variety, hero units, and deep strategic progression.

Fight off hordes of monstrous mutants created from a strange cataclysmic event in the new tower defense game, Prime World: Defenders. Join a group of exile treasure hunters who have ventured into the capital of an ancient empire, vast with mystery and danger.

Why similar: Tower Defense 88.2%, Strategy 9.6%, Indie 2.2%

Why You'll Like It: Combines tower defense with card-collecting mechanics, allowing for highly customizable hero and tower builds.

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 88.6%, Strategy 11.4%

Why You'll Like It: An action-RPG hybrid that allows you to control a hero unit to defend against waves of enemies, sharing the active-participation feel of the seed game.

iBomber Defense combines classic tower defense gameplay with intense action and strategy. Keep enemies at bay all over the world using a variety of weapons and tactics, from rattling Machine guns, explosive cannons and awesome anti-aircraft artillery!

Why similar: Tower Defense 81.2%, Strategy 15%, Indie 3.9%

Why You'll Like It: A classic, accessible tower defense game that focuses on historical-style weaponry with a clean, engaging interface.

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: Tower Defense 89.4%, Strategy 8.9%, Indie 1.7%

Why You'll Like It: An action-heavy, hero-based defense game that emphasizes traps and direct combat against incoming waves.

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 68.1%, Strategy 21.8%, Indie 6.4%, Sci-fi 3.8%

Why You'll Like It: A straightforward, classic-style sci-fi tower defense game that captures the essence of the genre perfectly.

Defense Task Force Featuring Large Scale Procedurally Generated Tower Defense Battles with FPS Quality Visuals and Infinite Waves. 10 tower types, with different attacks , 3 levels plus boosts. 25 Enemy alien species: Regulars, Swarmers, Racers, Cloakers, Healers, Boss Units and Spawners.

Why similar: Tower Defense 75.5%, Strategy 15.4%, Indie 4.6%, Sci-fi 4.6%

Why You'll Like It: A solid, no-nonsense sci-fi tower defense title that focuses on core mechanics and wave survival.

Command your troops through an epic (mis)adventure as you defend exotic lands from dragons, man-eating plants, and ghastly denizens of the underworld -all with flashy new towers, levels, heroes, and more goodies to help you crush your foes in this Fantasy Action Tower Defense game!

Why similar: Tower Defense 85.1%, Strategy 12.5%, Indie 2.4%

Evil Defenders is a fun, frenetic defense game: build and upgrade your towers, сast spells to repel enemy forces, use special landmarks and defend the Lands of Evil from invaders! Feel free to play the game in many different ways through unique tower upgrades, a deep skill tree and 100 in-game achievements.

Why similar: Tower Defense 84.6%, Strategy 12.3%, Indie 3.1%

Why You'll Like It: A polished, hero-based tower defense game that offers a wide variety of towers and upgrade paths.

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 77.9%, Strategy 15.1%, Indie 4.4%, Sci-fi 2.7%

Why You'll Like It: A stylized, fast-paced sci-fi tower defense game that is easy to pick up but offers significant strategic depth.

An epic, challenging tower defense game with an emphasis on strategy and replayability. Summon gems of immense magical potency and harness their unique abilities against a seemingly endless horde of monsters. The archdemon seeks to swallow the world, and you must journey to stand against her.

Why similar: Tower Defense 87.7%, Strategy 10.3%, Indie 2%

Stunning detail of levels, in-depth gameplay, finely tuned balance of all levels and turrets. During the game you will hold your defense with your turrets against the massive hordes of enemies.

Why similar: Tower Defense 79.7%, Strategy 15.9%, Indie 4.4%

Fieldrunners is now available on Steam! Download it now to play the hit tower defense game critics and fans have been raving about. Descend into the world of Fieldrunners, the most anticipated and visually stunning game in tower defense history!

Why similar: Tower Defense 86.3%, Strategy 10.6%, Indie 3.1%

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 89.3%, Strategy 10.7%

Zombie Tower Defense: Join the ongoing war, in an open world, against the undead zombie horde. Choose between multiple powerful heroes all with unique epic gear and skills! With the wide variety of towers you can create your own perfect strategy.

Why similar: Tower Defense 86.8%, Strategy 10%, Indie 3.1%

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 83.5%, Strategy 9.9%, Sci-fi 4.3%, Indie 2.4%

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 80.6%, Strategy 13.6%, Sci-fi 5.8%

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 76.1%, Strategy 13.8%, Sci-fi 7%, Indie 3.1%

Ancient Planet is classic tower defense game. The stronghold of an ancient civilization has been invaded by hordes of alien raiders. Use powerful technologies of the Ancient and repel the attack of the enemy's armies!

Why similar: Tower Defense 87.8%, Strategy 9.6%, Indie 2.6%

Command your elven army and defend mystical lands from sea serpents, evil sorcerers, and wave after wave of gnoll tribesman, all with the help of brand-spankin’ new towers, heroes, and spells to fend off every last baddie.

Why similar: Tower Defense 85%, Strategy 12.4%, Indie 2.6%

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: Tower Defense 62.9%, Strategy 29.9%, Sci-fi 4.6%, Indie 2.6%

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: Tower Defense 62.7%, Strategy 30.8%, Sci-fi 4.5%, Indie 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 80.6%, Strategy 13.1%, Sci-fi 6.3%

It's payback time! Lead your mighty dark army and make the Kingdom tremble with every step. Build powerful towers, choose your arsenal for destruction, and find the deadliest combination - train legendary heroes and lead them to victory!

Why similar: Tower Defense 86.2%, Strategy 13.8%

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 76.9%, Strategy 13.5%, Sci-fi 6.4%, Indie 3.2%

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 80%, Strategy 13.6%, Sci-fi 3.8%, Indie 2.7%

You think Tower Defense games are all about building? You thought wrong. Sanctum is not your average Tower Defense title. When the havoc starts, you get to join the fray! As one of the world’s first First Person Shooter - Tower Defense games, Sanctum has taken the best of both worlds to deliver an epic, one-of-a-kind experience.

Why similar: Tower Defense 86.6%, Strategy 8.9%, Sci-fi 2.5%, Indie 2%

Forge invincible defenses with lethal traps and devious machines, and crush relentless waves of adventurers in the ultimate tower defense showdown!

Why similar: Tower Defense 84.5%, Strategy 13.5%, Indie 2%

Warstone is a Tower Defense game, with RPG, Strategy, and even city building elements. Detailed Hi-res graphics and beautiful illustrations combine with a deep storyline to draw you into the world.

Why similar: Tower Defense 82.4%, Strategy 14%, Indie 3.6%

Tower Wars combines elements of tower defense, RTS, and all-out multi-player mayhem to bring you a completely unique experience, delivered with a fun and funny not-so-old world style!

Why similar: Tower Defense 88.1%, Strategy 9.9%, Indie 2%

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 68%, Strategy 21.9%, Indie 6.8%, Sci-fi 3.2%

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 69%, Strategy 22.5%, Indie 4.9%, Sci-fi 3.6%

Selknam Defense is more than an exceptional strategy game. It’s a gateway to the past that puts a nation’s destiny into your control. Do you have the skills to alter history and save the Selknam?

Why similar: Tower Defense 78%, Strategy 16.9%, Indie 5.1%

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 84.4%, Strategy 14.4%, Indie 1.2%

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.

Why similar: Tower Defense 81.3%, Strategy 13.2%, Sci-fi 5.5%

Mechs V Kaijus is an addictive hardcore tower defense gameplay. In Mechs V Kaijus you take on the role of Commander of a powerful Mechs squadron. Improve your Mech, strategically place towers and factories on the battlefield. Deploy support units on the battlefield, and save our civilization.

Why similar: Tower Defense 90.3%, Strategy 7.3%, Indie 2.5%

Molten Armor is an action tower defense game with a non-linear story in sci-fi setting! Command defenses and stop hordes of enemies! Fight on land, sea and in the skies!Decisions taken in the heat of battle will change the course of the war.

Why similar: Tower Defense 77.2%, Strategy 14.9%, Sci-fi 5.7%, Indie 2.1%