Monmusu Island game cover

Monmusu Island CD Key

Idle simulation on Monmusu Island where three monster-girl races revive magic to restore the island. Build facilities to generate gold, hire girls, and unlock private date scenes. Collect 24 monster girls to become a harem master, with hand-drawn 2D erotic art.
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Current Lowest Price

2.99$
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Release Date

21 May, 2026

Publisher/Developer

Pjoy Games, Siluman Soft

Reviews

Steam: 63.64% positive (7/11)
Metacritic: -

Monmusu Island Steam Price History Chart

Current Steam price: 2.99$
Lowest Steam price ever: 2.99$ — 2026-10-20
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Monmusu Island description

Monmusu Island

On Monmusu Island a pandemic-like curse wiped out most monsters. The remaining female monsters—Neko the cat, Usagi the rabbit, and Ushi the cow—join forces to restore life and balance to the land. Through ancient magic they summon outside help, sparking a new era for Monster Island and its inhabitants.

Gameplay blends a point-and-click adventure with idle simulation. You own and manage an island, building and upgrading facilities to grow your monster-girl settlement and generate wealth. The world advances even while you are away: gold continues to accumulate and your team works offline, pushing you toward a thriving, self-sustaining domain.

Core progression centers on hiring and nurturing monster girls. Improve facilities, expand your farm, and gift items to unlock and deepen relationships. The game offers adult-themed dating content through private date scenes, designed to be enjoyed with the characters you recruit. The current lineup features 4 monster girls with 6 special date scenes each, with plans to introduce more in future updates. Your long-term goal is to collect scenes from all 24 available girls and become a true harem master.

魅力的 hand-drawn artwork brings the world to life, presented in a detailed 2D art style that highlights character design and intimate moments within the game’s mature setting. The combination of idle mechanics, world-building, and romantic content creates a distinct experience that emphasizes strategy, collection, and relationship development on your own island.