HOW TO PLAY
Controls and goals
- How to operate
- Move with the arrow keys, grab onto the stairs with up and down, jump with Z, and use whip attack with X. In the title, select the difficulty level with up and down and start with Z or X
- Goal
- Cross castle enemies and scaffolding, follow branching paths, and stop the sorcerer from summoning an ancient demon
ABOUT THE GAME
Cross the stairs and scaffolding,
Cut through the castle with a whip.
"Demon Castle" is a 2D action adventure published by Mush. Head to the castle of a sorcerer attempting to summon an ancient demon, using jumps and whips to overcome enemies and terrain.
A WHIP UNDER THE MOON
Stop and aim,
A flash of the whip.
The posted screen is a passageway outside the castle where you can see the crescent moon and mountains. The protagonist swings the whip to the left from the spot and can attack using an input other than movement.

Actual play photography: Detour Playlist Editorial Department/Production: Mush
Move, stairs, jump, use whip properly
Use the arrow keys to move left and right, and use up and down to get to the stairs. In order to jump from a platform with Z and swing a whip with X, we use separate inputs to respond to the terrain and attack the enemy.
The severity of the castle changes between Normal and Hard.
According to the official page, on Hard you start with less health, enemies are placed in more difficult positions, and there are no mid-level checkpoints. Start by selecting the difficulty level on the title screen.
Find branching routes and hidden places
When you finish a level, there is a scene where you can choose the next path, and you can check the route you took on the map. The correct route is not limited to one, and hidden items that restore physical strength are hidden in suspicious walls.
PLAY NOTES
Play notes
- Scale
- There are multiple levels and branching routes where bosses await, and you can check the path you took on the map. The official page says that you can proceed to the end no matter which route you take.
- Language
- Difficulty level names and short progress instructions are in English. In order to understand the difference between Normal and Hard and the initial operations, it is necessary to check the English display.
- Fees/Support environment
- You can play the PC browser version of the official Mush itch.io page for free.
- How to proceed in the beginning
- At first, select Normal, start with Z or X, and move to the right. For the steps on the castle wall, move to the right and jump with Z, and when the enemy approaches, swing the whip with X.
Choose the moonlit path,
Go to the castle where the summons await.
The official Mush itch.io work page and official web version were confirmed on September 2, 2026. The two published images were taken by the editorial department on the official web version. Sources: Demon Castle — Mush official itch.io work page
STREAMING INFO
Streaming and video uploads
In the scope of checking the official Mush itch.io work page, we were unable to confirm a policy that allows the general public to play live games, live streaming, video posting, and monetization. This does not mean that distribution is prohibited, so please check with the author if necessary.
“Unconfirmed” does not mean streaming is prohibited. We have not confirmed an official policy for the general public.




READER COMMENTS
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