Top similar games like Citadel's Keeper:

Diplomacy is Not an Option: Shareware is a free prequel to the original game. In a medieval fantasy world, you are to build settlements, raise huge armies, and defend against massive hordes of enemies. Learn how Ironbrow clan shaped the world's map the first time - if you survive, that is.

Loulan Kingdom is a city-building survival and real-time strategy game. As the ruler of Loulan, you must build your city amid a perilous desert oasis, grow your power through the Silk Road, and fight to protect your kingdom—until the very end.

A 2D Strategic Base Defender game set in Medieval times. As relentless Waves of enemy forces threaten your Stronghold, you must gather Resources, Fortify your Defenses and lead your Rebellion. Prepare to strengthen your Base and manage your Resources. But beaware of the Storms!

Spires of Morosith is a tactical tower defense game with a blend of real-time-strategy elements.

In this Procedural City-Building and Survival game, you must manage your resources, expand your village, assemble an army and destroy the source of evil, which changed the entire eco system of a land that was once prosperous and peaceful.

Build towers, manage resources, and lead units to defend your kingdom against goblins. Every decision you make determines your kingdom's fate.

Eversiege is a roguelike, tower defense in which you'll defend a castle in procedurally generated terrain. Establish a production, build defending buildings and survive waves of enemies coming from everywhere! After defeat, buy new buildings, unlock new leaders and prepare to fight again.

NecroCity: Prologue is just part of the gameplay that awaits you in the full version of the game. Take on the role of the young Prince of Undead, trying to prove himself in the world of the Undead Kingdom. Push back the hordes of monsters and build your fortress! 🔥

Eternal Siege is an evolutionary tower defense based around min-max resource management, efficient use of spells, and (hopefully) building some towers. Start in the Ancient Greek era and defend your way through the human eras (Roman, medieval, modern, etc). Can you survive the human extinction era?

Lead your kingdom to victory! By day, you build and prepare your kingdom for impending threats. But every night, you must defend your kingdom against hordes of monsters, by commanding soldiers, building turrets, and fighting on the battleground yourself.

Upgrade and evolve, expand your territory, and build mighty defense towers to repel hordes of monsters.

Discover a unique blend of Colony Sim and Tactical RPG. Recruit and train your heroes, build your outpost, explore dungeons and engage in turn-based strategic battles to protect and expand your domain. Shape your stories by managing moods, relationships, ambitions and more!

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!

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.

Avian Colony is a survival simulation game that places you in the role of the ruler of a floating colony in a harsh sky world. Your main goal is to ensure the survival and prosperity of your colony by managing resources, planning strategically, and defending against threats.

Build your colony in the zombie apocalypse, gather resources, and defend against raids. Send your team to loot houses for supplies, advance through research, struggle to survive, and try to build your plane to return home.

Colonize is a combination of survival game and building strategy that takes place during the colonization period - the 17th century. It tells the story of a settlement in the New World and all the difficulties encountered by the early settlers.

Paddle Protectors is a mix of tower defense, real-time strategy and city-building. You will fight against crabs, bugs, and more. Establish farms and factories to produce ammunition and resources, fortify your land , build trenches and towers, lead your soldiers and tanks, and research new units.

Prologue version of Orc Warchief. Become an Orc warchief and fight for survival of your race. Rebuild your village and train your warriors. Gather resources and craft your weapons. Raise your warbanner and gather The Horde.

Forward Defense is a top-down 3D singleplayer tower defense game. Join the United Coalition Force and defeat insurgent forces armed with Technicals and Armored Personnel Carriers in a war-torn region of the Middle East.

God Save Us is a Real-Time Strategy Game where you can switch from top view to first person view instantly to protect your village from incoming waves of attacks.

Build a castle by day and defend it by night. Becastled blends cozy city-building with challenging tower defense strategy. Lead the Sun Kingdom’s last stand against the Moon Beasts and end the ancient conflict between light and darkness!

A minimalist modern military strategy tower defense game where you build and defend a forward operating base. Strategically place defenses, manage resources, and repel relentless waves of enemies. Build by day, defend by night, and command your forces in fast-paced, action-packed gameplay.

Welcome to A Modest Legacy, a medieval, real time strategy game. Here you will use city building and combat tactics to conquer your enemies in hopes to be the last kingdom standing. Good luck!

Immerse yourself in Nordhold: Origins, a tower defense game with high replayability. Build a medieval Nordic village, develop its economy, and defend it with unique towers and upgrades. Choose heroes and relics, compete on leaderboards, and aim for the Valhalla rank!

Return to the era of knights and castles in a uniquely satisfying mix of Settlement Building, RTS and Castle Simulation genres. Manage complex and realistic medieval production chains, build your army and defences, satisfy the King and lead your people to prosperity. Will you succeed as a new lord?

Build by day, defend by night! Kingdom's Deck is a card-based city builder where you build and protect your Kingdom from the enemy siege. Build your deck, deploy your cards wisely, defend your walls, manage your resources, and respond to various events that will shape your Kingdom!

Defense Collapse is a strategy game set in a medieval fantasy world. Pioneer the unexplored dark forest, build your town and defenses, and hold out against the massive hordes of enemies. How long can you survive?

In this city-building game, you will lead a group of survivors in their search for a new home. Manipulate the landscape, manage limited supplies, plant crops, hunt wildlife, gather resources, and develop trade routes to build a bustling and unique town.