Monster Girl Island: Prologue
Released Jun 2019
Dragons, slimes, giant bugs, centaurs and more. This island is full of monsters and they all are... Oddly attractive!? From Elves to Kitsune; from Mermaids to Androids; myths and science fiction suddenly become a reality as you find yourself in this mysterious island. Will you uncover its secrets?
94% positive · 17K reviews
Done
All announced content has been released
High confidence
Done
All announced content has been released
High confidence
Where to get it
Free on Steam
Evaluation
Monster Girl Island: Prologue is a free standalone release designed to cover roughly the first third of the developer's planned full game. It launched on June 19, 2019, and received a single patch on June 22, 2019, addressing bugs and adding quality-of-life features. The developer closed that patch note with: "Unless something breaks this should be it for Prologue" — a clear statement that no further updates to this Prologue release are planned. There have been no developer communications since that June 22, 2019 post. The Prologue itself is complete and intentionally self-contained; the store description explicitly frames it as a standalone introductory experience ahead of a separate, paid full release. The full game ("Monster Girl Island") is a different, unreleased product and is not what is being evaluated here. This Prologue release is finished.
Evidence
Developer posted the final patch for Prologue, closing with 'Unless something breaks this should be it for Prologue' — explicitly stating no further updates are planned for this release.
Store description states this is a standalone introductory experience covering roughly 1/3 of the main story, released ahead of a separate paid full game. The Prologue itself is a complete, bounded product by design.
Details
Developer
Publisher
Redamz
Achievements
—
Platform
Windows
Controller
—
Steam Deck
Playable
Players
Single-player
About this game
Overview
Dragons, slimes, giant bugs, centaurs and more. This island is full of monsters and they are all... Oddly attractive!?From Elves to Kitsune; from Mermaids to Androids; myths and science fiction suddenly become a reality as you find yourself on this mysterious island.
Will you uncover its secrets?
Or perhaps you will attempt to get close to these Monster Girls?
Story and Characters
You wake up on an island.You don't know how you arrived there.
You quickly realize this island is inhabited, but its residents aren't normal people. In fact, they aren't human at all!
As you meet the residents you learn that the mysteries go even further, these monstrous residents find themselves in the same situation as you. They also arrived to this island under strange circumstances, they actually come... From another world!?
During Prologue you'll meet a variety of Monster Girls including a nekomata, mermaid, elves, slime, dragon, kitsune, arachne, and many more!
Even more girls planned for future releases. Look forward to yuki onna, centaur, lamia, tree girl and more!
Features
- Adventure based gameplay, feel free to explore the island!
- Fully 3D world and characters.
- Original Soundtrack
- Multiple dialogue choices and branching events.
- Costume Shop (no microtransactions here!)
- A smartphone with no signal.
- A good boy that likes apples.
- A bunch of crabs.
- And of course, you can get close to the girls.
Information
Prologue features roughly 1/3rd of the main story (individual girl's routes not taken into account).It serves as an introductory, standalone, experience before the final release of the game (that won't be free and won't be finished for a while).
I've been working on Monster Girl Island for 3+ years, it's been a journey, but after much learning and many re-doings I finally think the game is polished enough for the public. What you see here is what you'll get in the full release, for the most part. So please look forward to Monster Girl Island if you enjoy this first part!
Are these done yet?
Last evaluated Jun 26, 2026
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