Skip to content

Start typing to see game suggestions. This only suggests apps that have a store page.

Click anywhere outside the search field to close this popup.

Only apps with a store page are suggested. Enter Submit to view all results.

Monster Girl Island: Prologue

App ID 943700
App Type Game
Publisher Redamz
Supported Systems Windows
Last Change Number 11703200
Last Record Update 28 May 2021 – 04:12:37 UTC ()
Release Date 19 June 2019 – 22:34:00 UTC ()

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?


This game is in the adult category. Are you sure you want to view these screenshots?

Open link

Additional Information

clienticon 71c009f1d60f3fb269ecf53d61fb8db77abcbd48
clienttga 66a11168051d0d4cf9e5cf6221ff0d3c624e1c9f
icon 33a132683921baee988608568a6db3d2ea34fc45
logo c0ba739e8ea298caa36d00c23f139f8530a0d0d9
logo_small c0ba739e8ea298caa36d00c23f139f8530a0d0d9_thumb
metacritic_name Monster Girl Island: Prologue
ReleaseState released
IsFreeApp Yes
Exclude from family sharing (exfgls) Yes
has_adult_content Yes
Store Release Date 20 June 2019 ()
osarch 64
community_hub_visible Yes
2/nameMonster Girl Island
Primary Genre Adventure (25)
Store Genres Adventure (25), Free to Play (37), Indie (23)
Supported Languages
1 LanguagesInterfaceFull AudioSubtitles
Steam Release Date 19 June 2019 – 22:34:00 UTC ()
Original Release Date 20 June 2019 – 07:00:00 UTC () (1561014000)
Store Asset Modification Time 28 May 2019 – 02:25:55 UTC () (1559010355)
Is free on the store? Yes
Web Assets
capsule_231x87.jpgLast-Modified: 28 May 2019 – 02:25:55 UTC
capsule_467x181.jpgLast-Modified: 28 May 2019 – 02:20:54 UTC
capsule_616x353.jpgLast-Modified: 28 May 2019 – 02:20:54 UTC
header.jpgLast-Modified: 28 May 2019 – 02:20:54 UTC
review_score 9
review_percentage 96
has_adult_content_sex Yes
Detected Technologies (?) Engine.Unity, SDK.OpenVR
  • 104 players right now
  • 131 24-hour peak
  • 1,538 all-time peak

Due to constant crawling, charts data is limited. You can login to view full data.

Initializing graph of a week…

Lifetime concurrent players on Steam

Initializing graph of a year…

Concurrent players

  • 104 players right now
  • 131 24-hour peak
  • 1,538 all-time peak

Owner estimations

  • 376.9 k .. 904.5 k on reviews (25-60)

Store data

  • 14,509 positive reviews
  • 566 negative reviews
  • 96.25% positive reviews

Steam game hub followers chart

Initializing followers chart…

How many players are playing Monster Girl Island: Prologue right now on Steam? There are 104 players in Monster Girl Island: Prologue on Steam. Monster Girl Island: Prologue player counter. Monster Girl Island: Prologue Steam charts.

Packages that include this app

SubID Name Billing Type Last Update
306735 Steam Sub 306735 CD Key 11 September 2018 – 20:39:20 UTC
306736 Monster Girl Island: Prologue for Beta Testing CD Key 11 September 2018 – 20:39:20 UTC
306737 Monster Girl Island: Prologue Free on Demand 11 September 2018 – 20:39:20 UTC
369600 Monster Girl Island: Prologue ( 943700 ) - complimentary reviewer package No Cost 28 May 2019 – 03:50:35 UTC

Want to highlight which packages you own? Install our browser extension


ID Name Max Size OS Extra Info
943701 Monster Girl Island: Prologue Content 5.38 GiB 64-bit


Name Description Build ID Time Updated
public 3946957 24 June 2019 – 00:57:34 UTC


Name Value
baselanguages English

Raw Information

You have to be signed in to load raw depot data

Launch Options

0. Unnamed launch option
Executable MGI Prologue\MGI.exe
Launch Type Launch (Default)
Operating System   windows
CPU Architecture 64-bit only


Key Value
installdir MGI Prologue

User File System

Key Value
quota 976.56 KiB (1000000)
maxnumfiles 50
  • 0/addpath:
  • 0/os: Windows
  • 0/oscompare: =
  • 0/root: gameinstall
  • 0/useinstead: gameinstall
  • 0/path: by redamz
  • 0/pattern: *.dat
  • 0/root: WinAppDataLocalLow

Save File Locations

Based on the configuration above, this is where we think the save files are located.

Read more about cloud saves in Steamworks documentation.

Platform Path Pattern
[All OSes] %USERPROFILE%/AppData/LocalLow/by redamz *.dat
Windows (Override) This appears to be broken because there is no configuration for [All OSes] and gameinstall.

Other apps that reference this app



Crunching history, just for you…

SteamDB has been running ad-free since 2012.
Find out how you can contribute.