银河战争一(Galactic Wars One）
A tower defense strategy science fiction game, in the future era, when aliens invade the solar system, players need to build various turrets to…
$1.60
Games like Crystal matrix
Hooked on the colorful side of Crystal matrix? These games keep things close enough to feel familiar.
UIFO 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.
71% of 41 Steam reviews are positive$4.99Desperate Place
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.
66% of 253 Steam reviews are positive$10.99Crystal War
In 2517, the earth's resources were exhausted, and humans actively went to other planets to find alternative energy sources. The advance expedition team finally found a rich LALU crystal deposit on the planet Marcus.
$9.99Xenocrystal TD
A Rogue-like Tower Defense game with 10 towers, 5 damage types, 20 abilities, and hundreds of upgrades. Select one or more upgrades to your towers and/or abilities at the end of each level that stay with you through your mission to protect the Xenocrystals. Limitless possibilities!
Colorful
$4.99Zerion 12
A sci-fi tower defense game. Build an army of towers to stop waves of a lured alien species called Zektid's.
100% of 1 Steam reviews are positive$14.99银河战争一(Galactic Wars One）
A tower defense strategy science fiction game, in the future era, when aliens invade the solar system, players need to build various turrets to resist alien attacks and guard the Milky Way and solar system.
$1.60Crystal Guardians TD
Crystal Guardians is a tower defense game with rogue-like elements. Fight of waves and defend the world crystal. Gear up your towers with a powerful combination of items for your strategy. In an ever expanding map, find hidden powers and conquer the enemies.
Colorful
87% of 116 Steam reviews are positive$13.99Siege of Centauri
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.
Colorful
64% of 352 Steam reviews are positive$14.99Frontline Crisis
Defend humanity's last hope, pilot a powerful mech, in Frontlines Crisis! A battlefield swarming with insects makes strategic and combat decisions crucial. Each decision will determine your fate. Defend humanity's last sanctuary, fight fiercely, and uphold human honor with wits and courage!
87% of 348 Steam reviews are positive$5.99Stellarcraft
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. 🚀
Colorful
88% of 76 Steam reviews are positivePlayers online now: 1$9.99Faith & Shield:4044 Tower Defense
Faith & Shield: 4044 Tower Defense game, where you protect the human settlement from the incoming invaders, robots and other creatures, never seen before on our planet.
Colorful
45% of 20 Steam reviews are positive$4.99Project Astra Dominium
Project Astra Dominium is a Tower Defense game with Basebuilding and Automation elements. Build up your base to become a supply hub for Earth's desperately needed materials, gather resources while defending against an unknown alien threat and improve your tower's and AI capabilities.
Colorful
87% of 70 Steam reviews are positive$7.99
Cheaper than Crystal matrix
飞跃星球（Eggy Space）
A light tower defense game with unique planet exploration. Defend against aliens, collect resources, and build a new home.
100% of 1 Steam reviews are positive$1.99
Cube Land Arena
The kingdom of Cubia call for your help, come to this vast kingdom where you will face strong enemies and hard challenges, you are the chosen to…
67% of 282 Steam reviews are positive$0.49
Planet TD
6 different types of towers! 4 planets with different characteristics! 25 different enemies.
73% of 123 Steam reviews are positive$2.99
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
Defense Task Force - Sci Fi Tower Defense
Defense Task Force Featuring Large Scale Procedurally Generated Tower Defense Battles with FPS Quality Visuals and Infinite Waves. 10 tower types…
54% of 35 Steam reviews are positive$2.99
Voronium - Locust Sols
Voronium takes place on a planet far away. Mankind has discovered Voronium which became it's ultimate energy source.
77% of 35 Steam reviews are positive$2.99
Crystal Guard TD
Stop hordes of robots from destroying your Crystal shrine in this random shop tower defense game!
0% of 2 Steam reviews are positive$0.99
Anomaly Defenders
Anomaly Defenders is the closing installment of the Anomaly series.
75% of 411 Steam reviews are positive$0.99
Sunset Planet
Sunset Planet is tower defence game. Your beautiful planet has been invaded by alien invaders.
88% of 8 Steam reviews are positive$0.99
War Beasts
Free layout 3D tower defense war game. There are tanks and Titans on land, battleships and swarms in the sky, and missiles in space.
75% of 20 Steam reviews are positive$2.99
Bluevolution
An incredible asteroid assault is about to begin! Take command of the planet's defenses and prevent extinction in this planetary Tower Defense game.
100% of 3 Steam reviews are positive$1.99
Hidden gems like Crystal matrix
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
Frontline Crisis
Defend humanity's last hope, pilot a powerful mech, in Frontlines Crisis!
87% of 348 Steam reviews are positive$5.99
CARNAGE OFFERING Tower Defense
The replicator robots are back! It's 2528. The machines are increasingly infecting the planets with genetically modified monsters.
93% of 286 Steam reviews are positive$9.99
Crystal Guardians TD
Crystal Guardians is a tower defense game with rogue-like elements. Fight of waves and defend the world crystal.
87% of 116 Steam reviews are positive$13.99
IRON GUARD
A sci-fi roomscale VR Tower Defense game. Strategize to destroy waves of rogue robots and assist the powerful turrets with a handheld drone.
95% of 145 Steam reviews are positivePlayers online now: 1$14.99
Desperate Place
Desperate Place is a strategic tower defense game where you play as a crew member who wakes up early on a damaged colonization starship.
66% of 253 Steam reviews are positive$10.99
Planet TD
6 different types of towers! 4 planets with different characteristics! 25 different enemies.
73% of 123 Steam reviews are positive$2.99
Ancient Planet Tower Defense
Ancient Planet is classic tower defense game. The stronghold of an ancient civilization has been invaded by hordes of alien raiders.
84% of 878 Steam reviews are positivePlayers online now: 8$4.99
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
Cube Land Arena
The kingdom of Cubia call for your help, come to this vast kingdom where you will face strong enemies and hard challenges, you are the chosen to…
67% of 282 Steam reviews are positive$0.49
Siege of Centauri
Defend against thousands of enemies in this explosive tower defense game.
64% of 352 Steam reviews are positive$14.99
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 Crystal matrix
Citadel Zero
Defend the last citadel on a dying alien world. Summon a gacha collection of bio-engineered defense towers, forge a custom loadout, and conquer…
70% of 23 Steam reviews are positiveFree
Illegal Alien Tower Defense
Can you save civilization from the brink of collapse, and restore Earth to a High-Trust society?
100% of 3 Steam reviews are positive$1.99
Stellarcraft
Stellarcraft is a sci-fi tower defense adventure: explore alien planets, gather resources, build defenses, and fend off waves of enemies, solo or in…
88% of 76 Steam reviews are positivePlayers online now: 1$9.99
ShellMobile: Titan Rampart
On the cosmic frontier, humanity has fought alien species for a century.
97% of 181 Steam reviews are positive$5.99
Bastion Frontier
Bastion Frontier is a dark fantasy tower defense game where your mission is to defend the last Crystal Hearts — the only source of light left in a…
93% of 81 Steam reviews are positive$39.99
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
Desperate Place
Desperate Place is a strategic tower defense game where you play as a crew member who wakes up early on a damaged colonization starship.
66% of 253 Steam reviews are positive$10.99
Stellar Infestation
Dig minerals, manufacture ammunition, and build defense towers to fend off swarms of insects.
75% of 4 Steam reviews are positive$7.99
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
Frontline Crisis
Defend humanity's last hope, pilot a powerful mech, in Frontlines Crisis!
87% of 348 Steam reviews are positive$5.99
Unearthing Invasions
A 3d tower defense game set in space. Protect the last resource outposts from the ongoing Alien attacks!
100% of 4 Steam reviews are positive$9.99
Stellar Initiative
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…
76% of 406 Steam reviews are positivePlayers online now: 6$9.99