Top similar games like Idle Castellan:

Idle Dungeon Crawling x Incremental Clicker: Experience the thrill of limitless growth. Master hero synergies and upgrade priorities to bring strategic depth to every dungeon run

UNDERDEEP is an idle RPG that lets you dive deep into dungeon exploration and mapping, set in a gritty, immersive fantasy world. Blending the charm of classic RPGs with modern idle mechanics, it offers a rich and thoughtful gameplay experience.

A deep idle RPG with 26 skills, class-based progression, and wave-based dungeon combat. Train skills, craft gear, build your estate, and automate production. Progress keeps ticking even when you're offline.

Dragon Cliff is a Semi-Idle RPG game with deep and complex itemization/skill systems to support endless character builds. Players are to collect adventurers, kill monsters, advance talent trees, enchant/reforge equipment, discover scrolls and finally assemble the most powerful adventure team!

Discover a new style of RPG management gameplay. Experience the fun of an idle RPG that blends an innovative four-view battle system with a deep hero-growth mechanic.

Auto Battler, Incremental, Idle Game

Explore, gather resources, hunt, fight, build and survive in Arduus, a minimalist medieval fantasy RPG in a procedural open world of up to 1000x1000 tiles. Recruit allies, fight beasts, craft and choose your path, whether surviving alone or leading an army and earning noble titles.

A Lovecraftian idle RPG with auto-battles, loot farming, chests, team strategy, town building, gear crafting, Runewords, stages, towers, realms, and seasons. Serve the Old Gods, build your town, corrupt the chosen, and fight for their awakening!

A hardcore medieval fantasy idle RPG, almost entirely in text. Build characters with races, jobs, and epithets. Over 1,000 items to loot. A story 93% of players rated "great." Combat and exploration are fully auto—just check your results. Now in Chapter 5, unfolding across five major updates.

Build a team of Kādomon that fights for you, then push deeper. An Idle Incremental RPG where your creatures auto-battle through endless waves, each with their own skill tree to master. Eclipse your run to unlock permanent power and climb further than ever before.

Train and upgrade gladiators, navigate dynamic narratives, and rise to power among rival houses in Ancient Rome. Build your Ludus, manage gladiators from the sidelines, or take direct control in the arena to shape their fates.

A light rogue-like casual game. Players fight enemies, mine for “minerals,” and gain upgrades to improve their stats. Between rounds, buy items to boost your character. Also includes an idle desktop pet mode—every keyboard or mouse input feeds your mushroom and helps it grow!

Your heroes never stop fighting. Build an unstoppable team in a fantasy idle RPG with AFK progression and offline rewards. Collect heroes and powerful gear, master formations, defeat epic bosses, and return to bigger rewards and endless incremental growth.

Everyone’s favorite laid-back dungeon crawler returns in Soda Dungeon 2. Featuring a new adventure, a whole town to upgrade, crafting, new classes, alternate dimensions, and more! It’s everything you loved about the original plus all the stuff you’ve been asking for.

A complex idle clicker game with infinite possibilities. Prestige, tiers, perks, bosses, different worlds, interest, bets and many more gameplay features are available!

Manage a party of adventurers and delve into the dungeon. As you progress, you will meet new enemies, new gear, a variety of dungeon systems.

Start with a single soldier, end up with a massive army. Strategize and command your units, or let them grind on their own. Progress through many unique progression systems and conquer all the stages.

The Covenant Tower is an incremental tower defense game where you build your tower higher during the day, defend it with archers and catapults at night, and prevent world-ending catastrophes by fulfilling an ancient prophecy. Strategic. Satisfying. Surprisingly addictive...

Sit on the throne as a benevolent (or malevolent) medieval monarch of the modern age and swipe your royal controller either left or right to impose your will upon the kingdom.

<I Am The Dao> is a cultivation idle game that blends xianxia web novel lore with real-time auto-combat. Starting from the Mortal Realm, you will ascend through the Spirit Realm and Immortal Realm, eventually dominating the boundless cosmos. Each new world you enter unlocks unique gameplay!

This is a casual strategic placement game. In the aerial world set in ancient China, players will play the role of a descendant of the Immortal Cultivation Sect. Travel through the barren continent, obtain various resources, build your sect, and ultimately ascend to the immortal realm.

In a land torn asunder by incessant warfare, it is time to assemble your own band of hardened warriors and enter the fray. Lead your men into battle, expand your realm, and claim the ultimate prize: the throne of Calradia!

A fantasy city builder where you build up your army of minions to take on monsters, bandits and even entire armies! Recruit a wide range of minions to help you gather resources, craft weapons and armor, and develop your colony into the stronghold it was always meant to be.

A short incremental tower defense game centered around growing and strengthening armies, to defend your kingdom and stop endless waves of enemies.

This is an RPG idle fighting game that does not bloat numbers. In the early stage, you only need to use the highest-level characters and equipment without thinking. But in the later stage, you will encounter some setbacks. At this time, you need to study those low-level characters and equipment.

Welcome to Accidental Alchemist! Pick up the title Alchemist & unleash chaos in your potion shop, where every mishap creates magical masterpieces. Upgrade, discover secrets, and become the ultimate alchemist!

This is a xiuzhen simulation placement game! From the refining of qi, building the foundation to the ascension of the celestial realm, crossed into the divine realm. （The game has been updated with the english mod, but you will need to select the "english" beta in the properties option to update it）

Meditation and cultivation, gathering and crafting, exploring secret realms, challenging demons, researching mental techniques and combat strategies. You can choose to seek enlightenment alone, or you can write your own cultivation legend with your Taoist companions or even various NPCs.

An incremental clicker game where you HEROICALLY… click a button to light a fire. That’s it... The fire makes ash, you assign recipes to arcane forges, materials appear, upgrades unlock, numbers go up, and somehow.... you’re still optimizing it all. Repeat forever.

"A Western fantasy loot RPG with crafting, turn-based combat, and dungeons. Descend as an ancient god's vessel into the Greybound, activate altars, recruit heroes, and uncover truth to restore its color."

Recruit an ever-growing army of heroes, stack powerful upgrades, and watch the numbers go up as your forces chip away at a colossal dragon!

Calradia is a land at war, offering great riches and even greater dangers to adventurers and mercenaries that flock to shed their blood on its soil. With courage and a strong sword, an unknown stranger can make a name as a warrior. Free-form sand-box gameplay.

【Village Defender】is a simple and easy-to-use city defense survival game that combines elements of war, levels, equipment, cards, etc. In addition to the combat targets on each battlefield, you can also challenge yourself to fight against how many waves.