Umbral Crown: Mark
Leviathan receives an order from the Fortress: infiltrate Pandemonium and eliminate Wrath, the ruthless traitor. Prove yourself, sea dragon. (Short adventure RPG / visual novel)

Positive · 5 reviews
100% positive (5 / 5)





A unique tower-defence puzzler! One day, the neighboring "Mofu" nation unexpectedly launched an assault on our land! Their aim is to destroy our castle! As a young witch of the kingdom, defend the walls and defeat the coming "Mofu" horde!
Released
December 15, 2025
Price
Platforms
Windows
Developer
Publisher
Last sync
September 26, 2026
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This game was developed as part of a new employee training program at Byking Inc.
Depending on your PC environment, the game may not function properly.
Unexpected issues or bugs may also occur during gameplay.
Thank you for your understanding.
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Players have 3 basic strategies at their disposal!
Make full use of each and aim for a clear!
―Line 'em up!—
Players can blow the "Mofu" onto adjacent lanes!
Use this to change their position and line 'em up nicely.
―Clear 'em out!—
Attack the "Mofu" to clear them from the field!
Line-up several "Mofu" with the same color, and you can clear them all at once!
―Defend the castle!—
Be careful of your castle's weak-points. Do not allow the "Mofu" to breach that line!
As a witch, players have 2 types of orbs on hand. Use them wisely, and protect your castle!
▼X marks on the grid are weak-points. If the "Mofu" reach it your castle integrity will drop.

▼Magical orbs can be used for blocking or attacking the "Mofu".

Clearing additional "missions" in a stage will affect your result!
Challenge more to get the highest score!!
