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Demon Castle Story

Demon Castle Story

Demon Castle Building Dungeon Management Simulation

Released Feb 8, 2026 Developer Kairosoft Co.,Ltd Platforms Windows RPGCasualSimulationStrategyTower Defense
View on Steam ↗ $12.99 (US · as of 2026-09-26)

What players say

Steam review score and the most-helpful voices, which may include critical ones. Score via Steam as of 2026-09-25.

80.5%positive302 reviews
Recommended · 10 found this helpful

“So far this is my favorite Kairosoft game I've played. The dungeon management aspect was really well done and allows a lot of creativity for monster combinations and traps. For instance my favorite setup was the punching machines in long hallways. Also wasn't too grindy either,…”

— a player, Steam review · 9 hrs played
Recommended · 2 found this helpful

“Quite literally the one game I've been wanting to see made for years, done in exactly the way I'd hoped it'd be; I am thoroughly astounded it's taken up to this long for any publisher to do right by me in this way. Five stars, no complaints, silences my anhedonia toward games in…”

— a player, Steam review · 41 hrs played
Recommended · 2 found this helpful

“This so far is one of my favorites from Kairosoft this is a reverse of Dungeon Village with a mashup of Dungeon Keeper This is a must have if either is your favorite or both!”

— a player, Steam review · 15 hrs played
Read more reviews ↗

Player activity

Monthly average concurrent players. Live data self-collected from the Steam API · history through 2026-08 via SteamCharts.

487all-time peak
0 100 200 168 avg · Feb 2026

Achievement stats

Global completion rates across all Steam players — a data view of how far people actually get. Source: Steam official stats · as of 2026-09-26.

18achievements
36.7%median completion
7.6%rarest: Monsterpedia Complete!
95.7% of players 84.4% of players 75.7% of players 66.3% of players 40.1% of players 39.3% of players 39.3% of players 37.9% of players 37.6% of players 36.7% of players 33.8% of players 31.2% of players 28.9% of players 27.6% of players 25.9% of players 23.8% of players 23.1% of players 7.6% of players 95.7% 0% most earned rarest
Almost everyone has
95.7%Let’s keep having awesome adventures! — Proof of placing monster for the first time
84.4%First Companion — Proof of obtaining your first monster companion
75.7%Looking forward to your next visit — Proof of defeating Sightseers
Rarest badges of honor
7.6%Monsterpedia Complete! — Proof of completing 100% of the Monsterpedia
23.1%The Last Hope of Humanity — Proof of adventurer Kairobot’s appearance
23.8%Mystique is Power! — Proof of exceeding 10000 in Castle Mystique

Price tracking

US-region pricing (USD), sampled twice daily by our own tracker since 2026-09-26. Steam prices vary by region — always confirm your local price on Steam.

$12.99current · sampled 2026-09-26 21:12 UTC
$12.99lowest since tracking began2026-09-26
US12.99 USD
EU12.79 EUR
UK10.99 GBP
Australia18.95 AUD
Canada16.99 CAD
Japan1,500 JPY
Brazil47.99 BRL
China52.00 CNY

Regional prices at last sample, in local currency — Steam sets each region's price independently.

China≈$7.7 Brazil Japan Canada US Australia UK EU≈$15

Cheapest → most expensive, converted to USD at ECB reference rates (2026-09-25). Relative comparison only.

Latest official news

Developer announcements via the Steam news API — links go to the original posts. More across all games on the news hub.

Feb 19, 2026
Update: Event Skip Feature & UI Improvements

1. You can now skip certain event scenes. 2. Changed the dungeon level-up pop-up window to a notification message. 3. Changed the Demon King's magic power increase notification pop-up to a notificatio

Screenshots

Official Steam store screenshots — click any shot to enlarge.

Facts & details

From the Steam store record, snapshot 2026-09-25.

GenresCasual, Indie, RPG, Simulation, Strategy
Player tagsRPG · Casual · Simulation · Strategy · Tower Defense · Colony Sim · City Builder · 2D Platformer · 2.5D · 2D · Cute · Pixel Graphics (Steam store community voting)
FeaturesSingle-player · Steam Achievements · Full controller support · DualShock Controller Support · DualShock Controller Support · DualSense Controller Support · DualSense Controller Support · Steam Input API Support
LanguagesEnglish, Simplified Chinese, Traditional Chinese, Japanese, Korean
ControllerFull support
Achievements18
Minimum system requirements (PC)

Minimum: Requires a 64-bit processor and operating system OS: Windows 10 64bit Processor: Intel Atom® x7-Z8750 Memory: 1 GB RAM DirectX: Version 10 Storage: 250 MB available space