Screenshots
Watch trailer on Steam ↗Monmusu Island
Pjoy Games · Published by Siluman Soft
Content notice: All character depicted are over the age of 21. Content Warning! This game contains: Monster girls, maid, animal eared girls, Vanilla, Consensual and non consensual sex, bondage, also harem content. Content: - 5 Girls - Total 21 Sexual Scenes complete animated ones. - Other animations on map
Mostly Positive — 79% positive (14 reviews) · 20 achievements
Last updated 28 Sept 2026
A curse wipes out monsters on Monmusu Island, leaving only Neko, Usagi, and Ushi. To save the island, they summon an outsider—an ordinary, perverted but inexperienced human MC—to help restore normalcy.
£3.43
£4.29Lowest price we've ever recorded
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Price history
Indie, Simulation, Casual · 2026 · More under £5 games
Explore Monmusu Island as an inexperienced human tasked with restoring normalcy after a monster-wiping curse. Join forces with Neko, Usagi, and Ushi in this casual, indie adventure that blends mystery and survival.
About this game
Story
On Monmusu Island, a pandemic-based curse has caused the extinction of monsters. Neko from the cat race, Usagi from the rabbit race, and Ushi from the cow race make up the final 3 species of female monsters.
The three race has taken the initiative to restore normalcy to Monster Island. They learn ancient magic that allows them to call on outside beings to assist them in finding solutions. They carry out the ceremony and are successful in calling out assistance.
MC is a regular person who only engages in daily masturbation and eroge gaming. Although he is incredibly perverted, he is essentially a virgin and has never made love.
Gameplay
Point and Click Adventure in Idle Simulation game!
This game features an idle simulation game where you need to buy and click facilities to upgrade your way for the future island you own!
You will need a massive amount of gold, but nothing can be between your dream of getting the harem as big as possible.
When your trusted golden hand and wrist got tired, just take off the gloves and the girls will generate gold in your absence, even when offline.
Build and upgrade facility for your monster girls and generate lots of gold!
Hire more girls in your farm!
By hiring and gifting the girls with the items you can buy, you can get a private date scenes with all of the girls in the game.
Currently we have 4 girls that would love to have 6 special date only for you!
Collect all scenes of 24 girls and you can become a harem master
Hand-drawn Artworks
Hand-drawn sexual scenes presented in a 2D art style
System Requirements
Will my PC run this? →Minimum
- OS *: Windows 7/8/8.1/10 (64-bit)
- Processor: Intel Core 2 Duo or equivalent
- Memory: 2048 MB RAM
- Graphics: DirectX 9/OpenGL 4.1 capable GPU
- DirectX: Version 9.0
- Storage: 200 MB available space
- Sound Card: DirectX-compatible sound card
- VR Support: None
Recommended
- OS: Windows 10/11 (64-bit)
- Processor: Intel Core i3 or better
- Memory: 4 MB RAM
- Graphics: Dedicated GPU with 1 GB VRAM (NVIDIA GeForce GT 730 / AMD equivalent or better)
- DirectX: Version 11
- Storage: 200 MB available space
- Sound Card: DirectX-compatible sound card
- VR Support: None
Supported Languages
Latest news
AnnouncementsOfficial
🏆 Unlock Achievements & Rename Your Character!
Hello everyone!A new update for Monmusu Island is now available!This update introduces two features that players have been waiting for:✨ Steam AchievementsSteam Achievements have finally arrived! Progress through the game and unlock achievements as you play. If you've already completed parts of the game, you may be able to unlock some achievements by loading your save and meeting the required conditions. ✏️Expanded Rename OptionsYou can now rename both your main character and every girl you've bred whenever you'd like, giving you more freedom to personalize your adventure. Thank you for all your support and feedback! We'll continue improving Monmusu Island and hope you enjoy this update!As always, if you encounter any issues or have suggestions, feel free to let us know in the Steam Community.Have fun exploring Monmusu Island!Read full article on Community Announcements (hung.falkana)AnnouncementsOfficial
Pleasure Room HA! Release Date and Demo is OUT!
Hello everyone! More and more good news for you! Pleasure room-Haunted Apartment, where your wet dreams showcased, release date is decided so please wishlist and share it to your fellow wet dreams enjoyer. Don't forget to try the demo too and we're waiting for your positive feedback for us to improve and making a better experiences for you guys and gals. Happy Fapping!Read full article on Community Announcements (silumansoft)AnnouncementsOfficial
Monmusu Island is OUT!
Finally it's Out!!Join the adventure of regular joe who only engages in daily masturbation and eroge gaming. Although he is incredibly perverted, he is essentially a virgin and has never made love. To the Unknown isekai and meets the harem!Point and Click Adventure in Idle Simulation game!This game features an idle simulation game where you need to buy and click facilities to upgrade your way for the future island you own!You will need a massive amount of gold, but nothing can be between your dream of getting the harem as big as possible.When your trusted golden hand and wrist got tired, just take off the gloves and the girls will generate gold in your absence, even when offline.Build and upgrade facility for your monster girls and generate lots of gold!Hire more girls in your farm!By hiring and gifting the girls with the items you can buy, you can get a private date scenes with all of the girls in the game. Currently we have 4 girls that would love to have 6 special date only for you!Collect all scenes of 24 girls and you can become a harem masterHand-drawn ArtworksHand-drawn sexual scenes presented in a 2D art styleAnd certainly animated for sure!Read full article on Community Announcements (silumansoft)
