Top similar games like Gemstone Guardians:
Gemstone Guardians $4.99
Gemstone Guardians is a tower defense game where selection and combinations are key. Similar to a game of poker, players are given a set of random towers each round and must make the best combinations to prevent the waves of enemies from reaching the end.
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Winter and People$1.99
Winter and People mix tower defense and city building genres with its minimal style; It is a tower defense game where you try to survive in cold cities.

Infinitode 2 - Infinite Tower DefenseFREE
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.

Dofense$12.99
Defend the energy cores from ever increasing enemy waves by destroying their spawn gates. Build tower mazes on Hex grid. Adapt them to dynamic changes in the terrain. Face quirky bosses. Design your own levels and share them on the Steam Workshop.

Broken Universe - Tower Defense$9.99
Get ready to rethink all your defense strategies! Build barricades to stop monsters, or lure them into a maze and attack. A variety of stages that change each time depending on how you play them.

Idle Towers$9.99
An idle survival game with tower defense mechanics. Build your own perfect defese and face infinite waves of enemies!

Towers & Goblins: The Last Stand$11.99
Build towers, manage resources, and lead units to defend your kingdom against goblins. Every decision you make determines your kingdom's fate.

Acid Planet$9.99
Acid Planet is a caustic blend of horde-survival, tower-defense and strategy. Build, fight and evolve to survive against rampaging swarms of monsters and fearsome Kaiju.

Stacks On Stacks (On Stacks)$12.99
Stacks On Stacks (On Stacks) is a zany 3D tower builder. Play as the Master Stacker, Rockit, who must use her psychic helmet to clean up the colorful bricks falling all over her madcap world.

Danger in Body$1.99
With vivid and exciting graphics, a pulsating soundtrack, and addictive gameplay, "Danger in Body" is a game that will keep you entertained and hooked for hours on end. You are the last hope of the human body - so get ready to fight for your right to live!

Natti$7.99
“Natti” is a roguelike tower defense game unfolds in the Otherworld of Korean folktales. Place defense towers, collect equipment, and strategically utilize various heroes to defeat all the monsters and protect the Otherworld with “Natti”, goblins in form of animals.

主动防御(Active Defense)$0.99
This is a strategy tower defense game where players need to choose the appropriate defense towers based on different maps and enemies. The game also offers a variety of defense towers, maps, and an endless mode waiting to be unlocked by the players!

Bad Mechanic$4.99
Bad Mechanic is a whimsical tower-defense bullet-hell roguelike. Plan (and improvise) your defenses against a swarm of mini middle managers. Dodge your own towers’ attacks as you collect loot. Build a unique arsenal of towers and items in each run that will kill you in spectacular fashion.

Guardian Grids$3.99
A simple and fun tower defense game! Combining light card elements with the fun of randomness.

The Necromancer Cometh! TD$11.99
Embark on a dark fantasy adventure in this pathbuilding tower defense game! Build huge mazes with hundreds of towers, unlock powerful upgrades, and face off against endless hordes of the undead. Will you survive when The Necromancer Cometh?

Abyss Protection$3.99
Abyss Protection - dynamic, endless Tower Defense. Fight off the attacks of the inhabitants of the abyss, expand your possessions. Build formidable weapons that will help repulse enemies. Defeat the main evil.

Invader TD$2.99
Invader TD is a side scroller tower defense, where the player is in the role of an alien race with the purpose of infecting and dominating the earth, you must protect yourself from the attacks of the humans, who are trying to destroy you.

BioFusionFREE
BioFusion is a VR co-op multiplayer, PvE, first-person-shooter, tower defense game. Swing on a grappling hook, ride a hovercraft, throw grenades, collect buffs, build towers and traps. Do what you must to keep the mutants from the Spores of Evolution.

Raging Titan$4.99
Build your towers, plan your efforts, watch out for changing paths and strike back against the alien invaders in this challenging tower defense game!

Goblin Takes No Argument[s]$0.99
In this retro style tower defence, we have created a short experience for all of you seeking a true Atari-like experience. This is off cause bull___. This was a school project completely made with Python and Pygames. Be sure to give us a grade;)

Uphold The Realm$6.99
Uphold The Realm is a VR Tower Defense game that lets you take command of your wargames style campaign map to interact with levels and manage towers. When your ready - Shrink down onto the table and use your archery skills to defend against the oncoming hordes.

Mars Power Industries Deluxe$5.99
Mysterious puzzle inspired by 2001:Space Odyssey. Manage resources, solve challenging puzzles and uncover what lies beneath the surface! Year after year, strange happenings plague our tiny colony, darkness devours Mars. Your job as an Electrician? Bring light where darkness reigns!

Empires in Ruins$17.99
The bastard child of Grand Strategy and Tower Defense, with a black humor infused plot, set in a grim, disillusioned world. Quell the rebellion, tame the Western Marches, disobey your orders and save your brandy. Not strictly in this order.

Tower Ball - Incremental Tower DefenseFREE
Build turrets to destroy balls & earn cash, spend it to upgrade and get stronger

Tower Alchemy$6.99
Tower Alchemy is a classic Tower Defense game with a twist. Mix and match your basic towers to unlock new powerful combinations from laser cannons and rail guns to meteor swarms and lightning bolts!

Eternal Elements$9.99
Melt sand, shatter glass, and rust iron in this epic elemental tower defense game. Combine elemental effects to beat powerful materials. Use cunning strategy and wit to take on impossible challenges. Unlock new abilities and power as you embark on this difficult journey.

MarZ: Tactical Base Defense$21.99
Build your defense base to fight back the undead hordes of Mars and secure the future of the red planet. MarZ is a game of strategy and tactical defense where you must carefully manage your crew and resources as you try to uncover the terrible secrets of the undead.

Permanence TD$1.99
Tower defense that will make you think

Order Of The Gatekeepers$9.99
Online Co-Operative Tower Defense with endless build options and a heavy focus on rewarding creative strategies. With so many Levels, Towers, Abilities, Items, & Builder Specialties every match can be a different experience!

Open The Gates!$12.99
Build, manage and defend your medieval castle in this crazy sidescroller RTS game. Build walls, towers and traps to protect your fortress from enemy sieges before launching your own. Command powerful siege weapons and design the perfect strategy to take back the empire.

Geometry Defense: Infinite$9.99
Geometry Defense: Infinite is a classic infinite tower defense game where you must build a maze to slow enemies and build towers to destroy them. An action-packed and engaging game requiring focus to take on challenges and test your skill.

Heroes of Higher Realms$4.99
Man the turrets! Command a powerful army of heroes and towers to defend your realm from the forces of darkness in Heroes of Higher Realms, the epic tower defense game!

Kingdoms and Castles$14.99
Kingdoms and Castles is a city-building simulation game about growing a kingdom from a tiny hamlet to a sprawling city and imposing castle. Make trade agreements, alliance, and war with neighboring AI controlled kingdoms. Each villager and resource is individually simulated.

FrankenStorm TD: PrologueFREE
Roguelite TD: all towers & enemies start the same, but you have 1 choice per wave affecting BOTH and stacking up for dramatic variance. Gradually salvage and make some choices permanent to build deeper strategies. Also a unique mazing challenge where wires and towers must be linked to a power source

Dwarven Towers$3.99
The dwarves are forced now to build towers and every time one of the witches casts a spell one of the dwarves is turned into a frog. heir only hope is to build as many towers as possible and score enough magical points.

Zombie Defense Shelter$9.99
You control an elite soldier of the future guarding the entrance of the shelter, which is besieged by crowds of zombies.

Project Myriad 2$2.99
Project Myriad 2 is a tower defense strategy game. Build towers on a grid of hexagons floating in space. 35 levels with unique tiles and mechanics each providing a unique challenge. 3 difficulty levels including extreme mode which has never ending waves of enemies. Strive for your new high score!

The Roy GameFREE
A game where puking zombies try to puke over your trashcans, you have to defend your trashcans by placing automatic puking robots. Meanwhile you have to attack the zombie-printing machines.

Laser Defense Extreme$1.99
Laser Defense Extreme is a Tower Defense Game, with a Killstreak System. Place your "Towers" strategically and eliminate the incoming enemies.

Ash of Legends$14.99
Grapple anywhere, build towers, place traps, shoot guns, launch arrows, and throw sabers, to defend the spores from hordes of the evil empire. Includes native Meta Quest with Link and Steam VR support.

Kingdom Rush Origins - Tower Defense$14.99
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.

Craft Hero$4.99
Gather resources by day, build and recruit by noon, defend your village by night! A new minimalism sandbox survival with countless new ideas – Craft Hero

Scarecropia$9.99
Here is Scarecropia! Lead at most 400 people to build a settlement. Arm your village to fight against the Goblin army, or invest limited resources in yourself to become unparalleled! Take every cost to survive!

Stack Masters$3.99
Do you enjoy playing around with the physics in games? Then this is the game for you. Stack Masters is built around exploring that concept in a competitive way. Including a built in level editor and Steam Workshop support, the game offers a never ending supply of physics sandbox gameplay to explore.

Bestion$1.99
Bestion is a game that combines Roguelike tower defense elements with automated factory construction. Players are required to construct their own factory on a planet and protect the kernel from monster attacks.

Buildy Stacky 2$3.99
Construct towering structures with unconventional building segments, stabilize, detonate, shrink, grow, and stick segments with special powers, all while navigating increasingly difficult challenges in this wacky and brain-teasing game that will delight players of all ages and skill levels.

Alien Shooter TD$9.99
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!

Kingdom Rush 5: Alliance TD$19.99
While a formidable evil emerges, an unexpected alliance is taking shape! It will take the finest warriors of Linirea and the relentless Dark Army to stop it. Beware! Though they may journey side by side the ever-changing winds of fate could swiftly alter their course.

Farm for your Life$9.99
Your community was taken down by a heavy storm which caused an apocalypse and unleashed the living dead. Together with the other survivors, it is your task to rebuild and to allow that sustainable life can still be assured. Cultivate your farm and manage your restaurant to provide food and deal with all the zombies.

BACK TO THE EGG! Tower Defense$9.99
Classical tower defense game mixed with rpg elements - Filled with things to do and places to explore.

Eye of the Void: Unleashed - Tower Defense$2.99
The goblin tribes of the realm have united against you and the power of the Eye of the Void. Build towers, fortify walls, construct gold mines to gather resources, and cast powerful spells to fend off waves of determined goblins and their allies who seek to destroy you.

Ezaron Defense$7.99
A classic 3D Tower Defense fantasy game, made by a very small and dedicated team.