Demon Castle Story

6.95K reviews
Content rating
Everyone 10+
50K+
Downloads
Content rating
Everyone 10+
Fantasy Violence
Learn more
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image

About this game

A management simulation in which you take an old, run-down castle and turn it into a dastardly demon stronghold! Recruit unique monsters as your minions and vanquish adventurers who dare to enter your realm!

Install gargoyles, ritual altars, and other devilish decor to boost your castle's mystique and attract more monsters your way. Gift them food and other items to help them grow, and garner their support to fend off pesky adventurers.

You can also send your monster minions out to explore nearby dungeons and towns. They'll bring you back items and other loot, and maybe even some new allies!

As you progress, you can also start merging monsters together to make new ones.

And don't forget traps—essential equipment for proper castle defense! Develop a range of traps like sleep-inducing gas and heavy washbowls to thwart any who cross the threshold of your demonic haven! By placing and combining traps in imaginative ways, you can make your fortress of fiendishness virtually impregnable!

Fend off attacks from mighty adventurers and keep your minions sweet to become the biggest and baddest demon overlord of all time!

Search "Kairosoft" to see our other games. https://kairopark.jp
We've got a whole range of free and one-time-purchase games to enjoy, many of which might feel familiar!
This is the Kairosoft 2D pixel art game series.

Follow us on X (formerly Twitter) for all the latest news! https://twitter.com/kairokun2010
Demon Castle Building Dungeon Management Simulation
Updated on
Jun 17, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • No data shared with third parties
    Learn more about how developers declare sharing
  • No data collected
    Learn more about how developers declare collection

Ratings and reviews

6.7K reviews
Nicholas Roderick
July 5, 2026
I've been obsessed with this game since I got it. I have hundreds of hours playing. The gameplay is incredibly fun, and the challenges are unique and challenging! There's a lot to learn throughout the game but it's never overwhelming. I wish I could've paid more for this game. it's truly that good. The only real criticism I have about Demon Castle Story is that you have to have a wall behind certain traps so they can't be accessed from the other side, but it doesn't take away from the game.
5 people found this review helpful
Did you find this helpful?
Logan Scott
July 21, 2026
Probably one of Kairosoft's hardest offerings I've tried, but I found it incredibly fun even though I needed a couple false starts figure out what to prioritize. In my experience, focus on traps & a layout that keeps adventurers splitting up. I got rid of any entry room early & turned it into a branch hall. worked great. Go hard for 3 stars and recruit as many monsters as you can to fill out prereqs though. Lean hard into merging at 3 stars, make 1k+ stat monsters, sprinkle around generously.
8 people found this review helpful
Did you find this helpful?
Faith Mitchell
September 5, 2026
I have spent so much time in this game, it's a little embarrassing. This game is so much fun and the gameplay loop is incredibly addictive. I love the little sprite animations, I'm a sucker for pixel art. I have played two games from these developers and I adore them both. You pay a small fee, no ads and get FAR more than you paid for. Cannot wait to see what future releases they'll put out!
Did you find this helpful?

What’s new

Now available in English, Traditional Chinese, Simplified Chinese and Korean!