Top similar games like Endless Castle: Under Siege:

Build your vocational academy to turn adventurers into your idle heroes, liven up the deserted streets, and advance the levels together!

One More Siege is an Incremental Strategy game with massive auto-battling armies. Plan your building placement to counter the enemy, break their ranks and destroy their castle. Every battle earns you Honor, which you can spend to upgrade your army.

The Cinder Throne is an Idler RPG where you passively kill enemies, level up, loot enemies, change pieces of equipment and find spells. Create powerfull synergies. Rebirth and come back stronger than ever

A dark fantasy survival strategy game where you manage villagers, gather resources, and defend a burning campfire against waves of undead in a relentless battle for survival.

Build a dungeon that works for you. Combine traps and monsters, crush waves of heroes, and turn their gold and souls into ever more powerful upgrades. An incremental idle game about automation, synergies, and just one more upgrade.

A thrilling idle tower defense game with automated battles and endless growth, and enjoy a pure single-player experience with zero in-app purchases! Build your defenses, deploy heroes, and watch your fortress evolve from a humble outpost into an unstoppable stronghold—even while you’re away.

Raise and equip dragons, expand your tower, manage resources, and defend your kingdom across five enemy realms in this colorful 2D idle tower-defense game.

An incremental action adventure across the seas. Lead 5 Heroes into battle, upgrade your team and mounts, unlock 16 powerful skills, and build your Skill Tree across 35 levels of sea monsters. Defeat giant bosses and tame them as mounts!

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.

A medieval idle kingdom that lives above your taskbar. Gather resources, raise your castle and defend it from raiders, then send troops on real-time expeditions, claim land and rise at court, all while you work.

A desktop idle loot RPG where five classes auto-battle along the edge of your screen. Farm gear from Common to Mythic, compare affixes, equip upgrades in one click, then enhance, salvage, and sacrifice every drop into a stronger build—all while you work, study, or browse.

Your guild fights at the bottom of your screen. Hire heroes, merge them, take on bosses, collect Arcanas, call in your Steam friends, and see how deep you get before you ascend and start over.

"Cultivation Tower" 2.0 "Cultivation Road", 2D side-scrolling idle cultivation game. Lead the protagonist and 12 fellow cultivators on an automatic journey along the immortal path, battling and collecting treasures, managing your sect, constantly reaching new heights in twenty different scenes.

Cook meals to deploy mercenaries and hold back waves of monsters! Manage the kitchen and battlefield at the same time in this pixel-art real-time strategy defense game.

Tiny Legions is an incremental strategy game that combines town building with army battles. Construct buildings to unlock troops, strengthen your hero, and build an army your way. Let your soldiers handle the fighting or take command when it matters.

A visual Idle RPG where you hunt creatures for rare loot, enchant your equipment, and build your hero. Master 11 skills, trade with merchants, and progress even offline. No Microtransactions, No P2W, just pure idle fun.

Build the ultimate hero formation on a tactical grid, then watch your team crush endless waves. Level heroes, collect mounts, farm pets, dig into mines, and prestige across 17+ worlds, all while you're away. A deeply layered idle RPG with real strategic depth.

Forge insanely rare turrets in an incremental idle tower defense. Hunt impossible loot, unlock powerful relics, expand your skill tree, complete quests, and discover game-breaking synergies as you chase the rarest drops imaginable.

Type to mine, smelt, and forge gear with random affixes. Welcome residents, battle monsters and village trials. Stronger residents mean faster automated production. Start with one blacksmith shop and grow your town!

A light city-building game that combines elements of card games and tower defense, where players must survive daily enemy attacks and gradually grow their strength to ultimately defeat powerful invaders.

Craft a party of RPG heroes and send them adventuring for levels and loot. Play actively to speed their progress, or leave them to grind on their own. Battle through beautiful and deadly biomes, advancing abilities and gear, then reset your progress to unlock powerful new mechanics and meta bonuses!

Desktopia is a city-builder game which simulates an evolving, medieval-esque village along the bottom of your desktop, allowing you to work, watch, or browse something else while you play.

Cube Duty is a Cube-Powered City Builder where every throw shapes your kingdom. Every cube can become a building, resource or unit. Grow intricate production chains, recruit powerful armies, and defend your Castle against waves of enemies and epic bosses!

Chippy Beaver​ is an engaging incremental idle game where you lead your beaver colony to chop down fantastical trees in the sky, harvest various relics, construct diverse buildings, and use money to upgrade your beavers.

Apprentice Mage Gale is an Autobattler RPG where your entire party depends on you. You are their ONLY damage dealer, so master 20+ spells, build your mage through 300+ skill nodes, overcome monsters and bosses, and fight across eight lands on the road on your way to the Demon King.

Noble Rulers — grow your realm and expand your castle in this short incremental game! Manage resources, discover foreign lands and build up an army to lay siege to your enemies.

The Infinite Realm: Idle is a cultivation-themed idle RPG. auto-battle, and grow through endless reincarnations with permanent % stat boosts. Collect hundreds of gear pieces, forge your build, and raise spirit pets. Challenge core realms for Dao Source. Idle cultivation, freely attain the Tao.

Plant towers, hold the Nexus. A pixel-art tower defense where population caps how wide you can build, gold and mana decide what you build with. Draft augments as you level, spend gems on a permanent power-up tree, and find out how long your walls hold.

Crack open chests, chain buffs and recruit the ultimate goblin crew in this fast-paced incremental auto-battler. Send them deeper into dungeons. Get better loot. Repeat!

A deep idle strategy game with extensive progression: heroes, promotions, arcane arts, gear, spirit beasts, talents, and runes. Create thousands of unique builds to form powerful teams! Experience adventure, team battles, and Demon Tide defense, and win easily with smart strategies!

A Tower Defense with deck of cards. Unlock cards and build your own deck to beat the levels. Easy to play but hard to master.

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.

This game is a fresh take on tower defense strategy, where it's not just about stacking numbers but engaging in a dynamic play of colors. Change the colors of your towers, enemies, terrain, and magical artifacts to create various offensive and defensive effects through color matching. "Magicolor"