Top similar games like Pulse Citadel:

Defend your planet from relentless stream of incoming asteroids in this fast-paced 2D tower defence game. Strategically place defensive buildings and upgrade your arsenal to protect your world from destruction!

A game where you will command 4 heroes (TD) in the defense of Earth from an army of AIs. Create cannons, place them in strategic locations, and level up. Each stage increases in difficulty progressively. You will also command the 4 heroes' ships and can even count on the help of a super robot.

Prismfall is a strategic incremental game about defending your Prism from waves of enemies. Earn gold, wield powerful abilities, and buy upgrades from a deep and extensive upgrade tree.

Build towers on rotating orbital rings to defend your planet. Discover powerful upgrades, battle elite enemies and bosses, and master unique planets with distinct challenges.

Outhold is a short, strategic incremental game that blends tower defense with a deep meta-progression. Experiment with builds and find overpowered synergies to defend the dwindling fires of Outhold.

Relaxing, casual single-Player Tower Defense Game for breaks in life.

Prepare for the onslaught! Chromatrix is a retro tower defense game where color and placement are everything. Upgrade and customize your turrets to counter shifting enemy-types and map configurations. Manage your resources and craft the perfect defense against any attack!

The conquistadors just landed and they are coming for your treasure! You must protect your Sanctuaries against this new threat. Take arms, lay down traps, improve your empire and lead your Heroes into battle to repel the invaders!

A short incremental game about firing bouncing shots, crushing geometric swarms, and upgrading your beacon to send its signal farther and farther.

Defend Your Land is a tower defense game focused on smart placement and impactful upgrades. Deploy units, strengthen your defenses, and stop relentless enemy waves before they overwhelm your base.

Deep Space Cache is a short & simple semi-idle bullet heaven incremental asteroid miner game.

Get Stoned is an incremental tower defense game where players design their own bullet loadouts. Gather resources, unlock unique boulders, and discover game-breaking synergies while defending your castle. It's time for everything to get stoned!

An incremental space mining game where you harvest resources across star systems. Discover hidden blueprints, research powerful technologies, upgrade your ship, and defend against relentless enemy waves and massive bosses.

A wave-based action game, where you fight to survive for as long as you can.

ProtectHeart is a strategic defense game, defend the heart at all costs! Are you up for the challenge?

Defend your starship in this endless sci-fi tower defense game! Form your ultimate squad of 2D heroes, permanently upgrade your spaceship's hull and defenses, and unleash powerful ultimate abilities to survive relentless waves of cosmic alien invaders in the vast void.

Solar Defense is a Military Sci-Fi inspired Tower Defense game focused heavily on strategy and decision making. Defend key locations and repel the Pilakarr forces back to their home world to end their attack and bring an end to this war.

We've traveled to the past to conquer these fertile lands. Now, you must defend them from the blood cult intent on taking it for themselves. Be careful though: from where their blood is spilled, ancient magicks empower whomever is still alive.

Beware Planet Earth! is a beguiling mix of classic tower defense and time management coming to PC via Steam for the first time. Save your cows from the Martian invasion by building an effective defense using towers, traps and objects, and also by firing your Zapper directly at the invading force of little green men!

Tech Blast is an action-puzzle game where a young mechanic explores an abandoned planet, solving puzzles, building mechanisms, and battling ore insects.

Purchase and customize ridiculously large slot machines in a quest for inner healing & finding out who did it. BAJILLIONAIRE is a not only a state of the art money-making experience but indeed a chance at spiritual awakening and a welcome distraction from job hunting.

The Echoes of Mars is a voxel-style tower defence game. Defend your research base on Mars from ancient creatures by strategically placing towers and using advanced tech.

Idle Tower Defense is a game where you control a single tower to fight off hordes of enemies. No randomization. Choose from a variety of modules to create unique builds and upgrade modules and survive endless waves.

A unique and casual chess experience with new rules and luck-based mechanics which requires fresh strategies, tactics, and ingenuity to conquer.

Elemental-rune tower defense with permadeath. Roll LAVA / GLACIER / ELECTRIC / STEEL attributes on your towers, combo into Tier 2 at Lv 10, dual-roll at Lv 15. Sell to reshape the path. 28 achievements, Steam Leaderboards, Steam Cloud.

A short incremental game about feeding a Black Hole matter by destroying Asteroids, Planets, and Stars.

An endless Tower Defense game of epic Monsters vs evil War Machines. Unlock and upgrade tons of unique elemental Monsters (Water, Air, Earth, and Fire) to defend your home from an infinite swarm of robots. Strategize the most effective placement of Monsters to synergize their elemental abilities.

Last warrior of the Herbheim's clan, it's your duty to defend the last family mine

Survive endless waves of dark entities, use your clicks as a resource, and grow stronger with every run. Find and upgrade powerful modules and unlock new technologies in this incremental clicker defense game. Also - Everything is square.

Build your towers according to the enmey you are facing in the wave. Upgrade your turrets to increase range, damage or rewards. Each enemy wave will be random and increases in speed and damage resistance. How far can you go!

Spectral Realm is a top-down tower defense Rogue game, where players need to play the role of an astronaut who has just landed on a different planet to block a constant stream of attacking native creatures and continuously strengthen themselves with the gems contained within their bodies.

Train and upgrade units to fight off invading armies. Place Tesla coils for defense and energy production. Hold control of the center to boost energy production. Expedite army upgrades before the enemy can take over. Defeat each set of opponent bases to advance your level.

Last Watchtower is a short incremental defense game. Gather resources, pick upgrades, and unlock powerful tower abilities. Experiment with diverse builds, withstand relentless monster waves, and grow stronger with every run through permanent meta-progression.

Lead the Fruit Army and defend your base from the evil vegetables in this Tower Defense game. Create your strategy with a variety of characters: adapt to different scenarios, manage your money to keep your defense line full of fruits.