Alien Invasion Tower Defense
Alien Invasion TD is a new strategy 3D game with an exciting new design, campaign mode, endless mode, players custom-built levels and PVP online…
83% of 6 Steam reviews are positive$1.99
Games like Alien Defense
Want something that feels tense the way Alien Defense does? Browse these games for your next favorite.
Alien Worms Invasion
Alien Worms Invasion is a game of futuristic exploration and tower defense. In the game, you can explore unknown areas and build bases and units to defense the attack of the worms which would be killed in the end。
Tense
65% of 20 Steam reviews are positive$9.99Alien Shooter TD
Innovative Tower Defense inspired by legendary Alien Shooter series! The game was created in keeping with the best traditions of Sigma`s games, no concessions of any kind - everything is just like in real life!
Tense
84% of 677 Steam reviews are positivePlayers online now: 3$9.99Alien Invasion Tower Defense
Alien Invasion TD is a new strategy 3D game with an exciting new design, campaign mode, endless mode, players custom-built levels and PVP online multiplayer, defend against waves of approaching enemies by placing your defense towers, recruiting units,use special attacks, boosts and more.
83% of 6 Steam reviews are positive$1.99Radiant Defense
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!
Tense
82% of 141 Steam reviews are positive$9.99Defender Bros
Prepare your defenses during the day and survive until dawn. Defender Bros is a Top-Down Tower Defense Roguelike where you play as a Soldier defending your Base. Pick between multiple abilities as you level up to increase you power, then after each run buy perks and get stronger
Tense
91% of 65 Steam reviews are positive$19.99Alien Robot Monsters
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!
Tense
83% of 120 Steam reviews are positive$5.99UIFO DEFENSE HD
UIFO Defense has a special gameplay of tower defense. Utilize the terrain and different turrets to eliminate alien invaders and protect the crystal cores which are critical to science and technology of your civilization.
Tense
71% of 41 Steam reviews are positive$4.99ARC Alien Raid Combat
A game based on the classic Tower Defense style, assemble your best combination to overcome obstacles, can you do it?
76% of 21 Steam reviews are positive$0.99Bottom Squad
An idle defense game at the bottom of your screen. Build your squad, upgrade your base, and hold the line against relentless alien waves while you work or browse.
63% of 16 Steam reviews are positive$5.99Ant Guardians
It’s a defense game where you create your own strategy, grow your units, and defend against enemies.
Tense
83% of 18 Steam reviews are positive$3.99Military Defense
Protect the base from an alien invasion. Place cannons and destroy the invaders. Upgrade cannons to resist the enemies.
Tense
$4.99Last Stand: Defense
"Last Stand:Defense" is a tower defense-themed Rogue-like game. Players need to defend against waves of enemies by building bases, matching talents, and performing delicate operations during battles. Remember, every choice you make will affect the final outcome of the battle!
Tense
81% of 116 Steam reviews are positive$5.99
Cheaper than Alien Defense
Space Cycle
Space resources are the battleground for warring factions. As a Space Defense Officer, protect your faction's assets in a vast, hostile universe.
93% of 179 Steam reviews are positive$1.99
ARC Alien Raid Combat
A game based on the classic Tower Defense style, assemble your best combination to overcome obstacles, can you do it?
76% of 21 Steam reviews are positive$0.99
Random Hero Defense
Block enemies with randomly generated heroes Survive until the last round and clear the game.
100% of 1 Steam reviews are positive$1.99
Cracks In Hell
Defeat the swarming monsters of hell and save mankind
82% of 17 Steam reviews are positive$1.99
U.F.O. K.O. Tower Defense
U.F.O. K.O. Tower Defense: Place lasers, missile launchers, sniper turrets, and use combat strategies such as airstrikes and the space ray to repel…
50% of 2 Steam reviews are positive$1.99
ARRIVAL: ZERO EARTH
Fight giant War of the Worlds -style aliens invading Finland during a Winter in the 90's.
80% of 155 Steam reviews are positive$1.19
Defend The General
Tap to deploy soldiers, buy chests to upgrade units and relics, and strategize to fight off waves of enemies!
100% of 2 Steam reviews are positive$0.99
IMM Defense
This is a classic tower defense game. The alien ship is ready to invade this lovely planet.
40% of 5 Steam reviews are positive$0.99
DEFENDER OF EARTH VS THE ALIEN ARMADA
Defender of Earth vs The Alien Armada is an exciting space themed tower defense game!
50% of 2 Steam reviews are positive$1.99
Galaxy Defenders (Classic TD)
A classic tower defense game set in space! Build and upgrade towers, defend your portal from waves of alien invaders, and outsmart evolving threats…
$0.99
Astro Looter: Survivor
Explore alien planets to mine resources, kill alien insects, build defense turrets, and survive waves of insect attacks across the galactic frontier.
67% of 387 Steam reviews are positivePlayers online now: 1$1.99
Hidden gems like Alien Defense
Galaxy Defense War
'Galaxy Defense War' is a roguelike tower defense game where you need to select suitable galactic principles from randomly dropped heroes and…
97% of 112 Steam reviews are positive$7.72
Tower Dominion
Shape the battlefield into kill zones, hold the line against waves of aliens, and rebuild your defenses every run.
85% of 5,276 Steam reviews are positivePlayers online now: 324$17.49
Last Stand: Defense
"Last Stand:Defense" is a tower defense-themed Rogue-like game.
81% of 116 Steam reviews are positive$5.99
ARRIVAL: ZERO EARTH
Fight giant War of the Worlds -style aliens invading Finland during a Winter in the 90's.
80% of 155 Steam reviews are positive$1.19
Colony Siege
Colony Siege combines the best of RTS and tower defense, including base building, mazing, and unit physics.
91% of 199 Steam reviews are positive$19.99
Towerful Defense: A Rogue TD
A roguelike tower defense where you control a single tower to fight against hordes of aliens coming from all directions.
69% of 208 Steam reviews are positive$9.99
Planet TD
6 different types of towers! 4 planets with different characteristics! 25 different enemies.
73% of 123 Steam reviews are positive$2.99
Grow Defense
Upgrade your castle and weapons, hold off waves of monsters, and push through ever harder zones.
76% of 608 Steam reviews are positivePlayers online now: 11Free
This Isn't Just Tower Defense
Defend your base with placeable towers that can be upgraded endlessly.
59% of 126 Steam reviews are positive$6.99
Alien Shooter TD
Innovative Tower Defense inspired by legendary Alien Shooter series!
84% of 677 Steam reviews are positivePlayers online now: 3$9.99
Alien Robot Monsters
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…
83% of 120 Steam reviews are positive$5.99
Radiant Defense
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…
82% of 141 Steam reviews are positive$9.99
Newest games like Alien Defense
Axom: Conquest
Build and defend your fortress while expanding out in this hold-out tower defense roguelite.
76% of 50 Steam reviews are positive$9.99
Defend The General
Tap to deploy soldiers, buy chests to upgrade units and relics, and strategize to fight off waves of enemies!
100% of 2 Steam reviews are positive$0.99
Galaxy Defense War
'Galaxy Defense War' is a roguelike tower defense game where you need to select suitable galactic principles from randomly dropped heroes and…
97% of 112 Steam reviews are positive$7.72
City Defense Z
Build up your base in daylight, then hold it against the zombie horde after dark, with every failed run making the next one stronger.
72% of 320 Steam reviews are positivePlayers online now: 3$9.99
Ant Guardians
It’s a defense game where you create your own strategy, grow your units, and defend against enemies.
83% of 18 Steam reviews are positive$3.99
Tower Dominion
Shape the battlefield into kill zones, hold the line against waves of aliens, and rebuild your defenses every run.
85% of 5,276 Steam reviews are positivePlayers online now: 324$17.49
XENOBREAKERS: Classic Tower Defense
Defend Billy and his crew on their way to the extraction zone! You have been authorized to use the defense system.
83% of 69 Steam reviews are positive$4.99
Cosmic Raze
Cosmic Raze is a sci-fi tower defense strategy game. Control advanced weapons, build powerful synergies, and then blast away as aliens attempt to…
81% of 21 Steam reviews are positive$3.49
Defense Builder
Defense Builder is a sci-fi tower defense game. Players can build various defense towers to resist enemy attacks.
68% of 47 Steam reviews are positive$12.99
Last Stand: Defense
"Last Stand:Defense" is a tower defense-themed Rogue-like game.
81% of 116 Steam reviews are positive$5.99
Space Cycle
Space resources are the battleground for warring factions. As a Space Defense Officer, protect your faction's assets in a vast, hostile universe.
93% of 179 Steam reviews are positive$1.99
Defender Bros
Prepare your defenses during the day and survive until dawn.
91% of 65 Steam reviews are positive$19.99