57%Good matchEndgame of Devil
89%94389% positive reviews, Very Positive across 943 reviews·Singleplayer · Pixel Graphics
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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.
Stop Breaking My Castle!
Steam"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 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.

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!

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!

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!
Steam data © 2026 Valve Corporation. Trademarks are property of their respective owners.
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