Steam

Monster Girls Onsen

Also known as Monster Girls Onsen, mgo, monster girls onsen

Seduce sexy monster girls and run your own Japanese hot spring in this adult anime visual novel. Upgrade your onsen, unlock NSFW scenes, and explore a steamy mythological story.

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Last update

20 May 2026

Original sources

Latest update

StorePublished 23 Feb 2026

🔥 Demo is now available!

We’ve released the demo for the second part of the game. You can now explore the resort, meet the first characters, and experience the beginning of Taro’s new chapter. This is only the beginning. The full version will b…

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Update history

Browse past updates and patch notes for this game.

20updates

January 2026
We’re happy to officially confirm: the sequel is in development. The new story continues the events of the first game and takes the main character to the next level. This time, he’s not just a guest — he becomes the man…3 changesGameplayStore21 Jan 2026
Welcome to the gym. Run a fitness club, meet girls, and train their bodies. And maybe, you’ll get a chance to take things a little further. To celebrate the launch, we’re giving away a few keys — grab one while they las…2 changesMapsStore16 Jan 2026
Welcome to the gym. Run a fitness club, meet girls, and train their bodies. And maybe, you’ll get a chance to take things a little further. To celebrate the launch, we’re giving away a few keys — grab one while they las…2 changesMapsStore16 Jan 2026
December 2025
Winter is the perfect time to catch up. Our games are part of the Steam Winter Sale — a great moment to return to projects that have been waiting in your wishlist. XXX Pussy House - 35% Monster Girls Onsen - 35% Elven H…1 changeStore19 Dec 2025
System is checking files… Character scan — complete. Scene integrity — verified. Common sense check — failed. Yes, it’s exactly what you think: get ready for glitches, flirting, weird dialogues, and characters who clear…1 changeStore05 Dec 2025
We finally squeezed the bugs out (well… most of them), stitched all the scenes together, and cleaned up the source code so thoroughly that even the Antivirus got emotional. So we can officially say: the full release arr…1 changeStore01 Dec 2025
October 2025
Open the doors, meet the heroines, and uncover the house’s secret. To celebrate the launch, we’re sharing a few keys: IYT6V-PGRMI-AY92E LMEZA-004R6-0XG88 HIKQD-YFE34-MPXCQ E9J93-GJYQX-FYNXI ZRYPL-HWKFI-4YEBJ ANBIX-B5CI4…2 changesStore24 Oct 2025
Open the doors and move step by step toward the house’s secret. Add to your wishlist so it stays on your radar. https://store.steampowered.com/app/39591001 changeStore20 Oct 2025
Step into the madness of a galactic prison, meet the first inmates, and test your warden skills. Play the demo today! 🚀 https://store.steampowered.com/app/40398001 changeStore15 Oct 2025
Step into the loincloth of a barbarian who just unleashed demon twins upon the world. 🎮 Try the demo now — and wishlist the full game! https://store.steampowered.com/app/40343201 changeStore09 Oct 2025
Check out our other games: [dynamiclink href="https://store.steampowered.com/app/3959100"][dynamiclink href="https://store.steampowered.com/app/3994260"][dynamiclink href="https://store.steampowered.com/app/4039800"][dy…1 changeStore09 Oct 2025

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