Top similar games like Operation Defensive!:

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.

A 2D Touhou fan game combining tower defense, tower merging, RTS-style control, and chaotic bullet-filled battles. Merge Touhou characters, build your defense, and compete for the fastest clear time on the leaderboard.

Play as the King of Cards or the King of Chess in this fresh take on the tower defense genre. You can play as the enemy trying to sneak past the towers or play as the towers themselves. There are many upgrades for each side and lots of content to unlock!

A tactical defense game where you build the battlefield itself. Lure enemies through your maze using traps, towers, and godly powers.

iBomber moves to the Pacific as you fight a whole new enemy across the Pacific rim to regain freedom.

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

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.

《Loopstructor:Prologue》 is a strategy game that combines tower defence with Roguelike.Unlike traditional tower defense game, the towers in the game are vehicles that move along ‘loops’.You need to create defence loop and build battle trains to defend against enemy attacks.

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.

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!

Become the villain and raise an army of undead in this real-time reverse tower defense strategy game. Send waves of monsters to battle and aid them with your evil magic until they break your enemies’ defenses. It’s time for you to rule over the continent with an iron fist as its Dark Lord!

A tower defense game where you command an army of skeleton wizards. Unlock multiple magic skills on each skeleton wizard and switch between them mid-battle. Master fire, ice, lightning, and more to survive increasingly brutal waves of enemies.

SMaC! is an anomaly-spotting game where you work as a shotgun-wielding maid. Identify fake customers by their behavior and blow them away, while keeping the real ones happy with their orders.

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.

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

Go head to head with other players in a Bloon-popping battle for victory. From the creators of best-selling Bloons TD 6, this all new Battles game is specially designed for multiplayer combat, featuring the ability to control bloons directly and send them charging past your opponent's defenses.

Sharkbaked — you play as a friendly Shark. If your friends get hungry, your task is to cook for them. Find ingredients, mix them, and create. It's simple. But your friends will "help" you to cook the dishes as quickly as possible.

Prepare for an epic battle in this captivating tower defense game! Build, defend, and triumph as you strategically place towers, manage resources, and upgrade your arsenal to fend off relentless waves of enemies.

Kingdom is a 2D sidescrolling strategy/resource management hybrid with a minimalist feel wrapped in a beautiful, modern pixel art aesthetic.

In this single player fantasy tower defense game, following the main character Canaly after mysterious events happen across a world she's investigating, she stumbles upon an artifact that allows her to summon strange defense mechanisms that may help her complete this journey.   

An amazing mix of RPG, strategy, simulation, sandbox and survival game. Aurora Dusk looks like many other games, but instead of being alone, you live in a community. You can play one or more villagers and evolve from the Wood Age to the Steam Age.

Build your own towers from modular units, adapt mid battle, and master custom defenses in this Build-a-Tower Defense.

Cut the trees, catch some fish, upgrade your castle and environment. Guard the treasure against waves of enemies and lead your dwarves on their way to victory!

Summon troops and use magic to defeat mage lords and other foes while surviving attacks from their followers. Learn new spells and recruit troops with unique powers. Venture across the land, battling ever stronger enemies until reaching the evil Mage King.

Play as a kind-hearted god in a tiny world. Grow thriving forests, inspire mortals to stand strong, and unleash nature's fury to shield them from evil. One small miracle at a time.

Experience the original three GemCraft games in one collection. GemCraft 1, GemCraft 0, and GemCraft Labyrinth! Forge and combine magical gems, build deadly defenses, and survive relentless waves in one of the most beloved Flash-era tower defense series!

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.

Summon hordes of minions to defend your realm against invading heroes in this fast-paced fantasy strategy game. Unlock permanent upgrades, new levels and more advanced minions to survive the ever-growing threat.

Junkyard War is a unique take on the tower defense genre. Clear trash from the junkyard and recycle it into valuable resources while holding off waves of your competitor's army trying to make the trash disappear by burning it all down!

A game that combines the fun of custom spellcrafting with the monotony of a tower defense! Protect your hut with a vast arsenal of spells that you put into varyingly effective combinations.

The most addicting tower defense game, packed with monsters and tough defenders, all of which fit perfectly into the cartoonish environment. Prehistory is a prologue for the main story Age of Defense.

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.