Screenshots
Watch trailer on Steam ↗Stop Breaking My Castle!
Team DunningKruger · Published by SPARTA Club
Very Positive — 83% positive (60 reviews) · 1 achievements
Last updated 28 Sept 2026
A peaceful demon castle is attacked daily by heroes who smash walls and defeat monsters, turning it into a hunting ground. As the Demon Lord, you summon and evolve monsters to defend your home and stop the relentless heroes.
Indie, Free To Play, Strategy, Early Access, Casual · 2025 · More free games
As the Demon Lord in Stop Breaking My Castle!, you face daily assaults on your peaceful fortress. Summon and upgrade monstrous defenders to protect against relentless hero attacks and reclaim your hunting ground.
About this game
"Stop Breaking My Castle!" is a game designed from the perspective of monsters who are always getting beaten up.
Every day, heroes invade the peaceful Demon Lord’s castle, killing monsters and smashing the castle walls before leaving.
The Demon Lord and the monsters just want to live normal lives, but it’s been a long time since their home turned into someone else’s hunting ground for leveling up.
As the player, you become the Demon Lord, summoning and evolving monsters to stop the heroes.
Summon and place monsters.
Summon monsters to defend against invading heroes!
Heroes, driven by money and fame, have attacked the demon tribe who were living peacefully.
Summon monsters to stop the heroes and protect the peace of the demon tribe.
Auto Battle
Punish the heroes with the summoned monsters!
It's time to show the heroes, who were after gold and experience, the bitter taste of fear.
Monsters fight automatically, so strategic placement is necessary!
Evolution
Evolve your monsters and make them stronger!
It’s not just the heroes who get to level up.
Punish the heroes who invade for experience points with even more powerful monsters!
Over 20 powerful types of monsters are waiting to be summoned!
Grinding
Defeating heroes drops gold!
You can collect it with your mouse (a cute bat can help you, too).
Looting isn’t just for heroes. Invading heroes must leave everything behind.
Of course, if a monster falls, you can gather their souls to gain experience!
System Requirements
Will my PC run this? →Minimum
- OS: Windows 10 64bit
- Processor: Dual core from Intel or AMD at 2.8 GHz
- Memory: 4 GB RAM
- DirectX: Version 11
- Storage: 1 GB available space
Recommended
- OS: Windows 10 64bit
- Memory: 8 GB RAM
- DirectX: Version 12
- Storage: 1 GB available space
Supported Languages
Latest news
Patch NotesOfficial
Update Notes
Hello, this is Team Dunning-Kruger.Based on your feedback, we’ve fixed some early bugs and applied a few updates.Thank you! Monster Summon StackNow, when you summon a monster, you will consume the number of summonses.The number of summonses is recovered periodically, and if the number of subpoenas is insufficient, they cannot be subpoenaed.You can check the remaining summon counts and recoveries in the slot.Ability and reinforcement options related to the number of summonses were added. Delete Ability Evolution Point ItemsEvolutionary point entry has been deleted from Ability.We will return the amount invested in the item. Summonned Monster Structural Change Monsters summoned with skills, etc. will no longer be rewarded with experience, etc. Also, monsters summoned by skills, etc. will have a time limit life. Reduce Monster Projection DurationThe duration of the monster's projectile (arrow, magic, etc.) is reduced.As a result, the travel distance will also be reduced.Depending on the type of monster, it has decreased by at least 20% to up to 40%. Fixed '0 bug'Fixed a bug where all the figures were zero at the start of the game.As a related bug, we fixed a bug where the ability was applied twice in the next game of 0 bug. Fixed other typos and awkward texts Some typos and long text have been corrected.Read full article on Community Announcements (jjjj933)Patch NotesOfficial
Update Notes
Hello, this is Team Dunning-Kruger.Based on your feedback, we’ve fixed some early bugs and applied a few updates.Thank you!Reroll Now Uses Gold from the LobbyThe currency required for the reroll feature in the level-up selection screen has been changed.Previously: Gold earned only within the current stageNow: Gold carried by the player (lobby gold)Hero Nickname DisplayThe hero’s level and nickname are now displayed.Nicknames are generated randomly, and more variations will be added or updated in future patches.Sound AdjustmentFixed an issue where the default sound settings were too low at game start.The initial values have been adjusted, and the range of sound control has been expanded.Unclaimed Achievement NotificationAdded a feature that displays a notification on the lobby achievement button when rewards are available from cleared achievements.Achievement progress visibility has also been improved.Hit Effect Duration Adjustment The hit effect duration for heroes, monsters, and castle walls was too long. It has been shortened from 0.5s → 0.1s for a faster, smoother experience.Simplified Animation on Mid-Game ExitWhen giving up during gameplay, the defeat animation has been minimized, allowing quicker transition back to the lobby.Read full article on Community Announcements (jjjj933)
