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Koikatsu

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Koikatsu
Koikatsu cover
Developers
ILLUSION
Engines
Unity
Release dates
Windows April 27, 2018
Taxonomy
Modes Singleplayer
Pacing Real-time
Perspectives Third-person
Genres Simulation, Dating, RPG
Art styles Anime
Themes Adult
Koikatsu on IGDB

Koikatsu[Note 1] is a singleplayer adult third-person simulation dating RPG game developed and published by ILLUSION.

It was released in Japan on April 27, 2018 via physical retail copy and digital copy on digital storefronts including FANZA, DLSite and ILLUSION's own ILLUSION ONLINE store. Two expansion packs were released for the game. The first one, Personality Expansion Pack was released on July 27, 2018 and contains 3 additional character personalities, while the second one, After School, was released on December 21, 2018 and added 4 additional character personalities, additional hairs and costumes, additional maps and more.

The localized version of the game, Koikatsu Party, was released on FAKKU and Steam on June 10, 2019, though the Steam version of the game have the adult contents removed and requires an external patch from ILLUSION's site to restore it. A DLC which contains the localized contents of the two expansion packs, After Party, was released on Steam on May 13, 2021.

As with many ILLUSION's games before it, Koikatsu has many mods made by the community even before the localized version was released.

It was announced on July 14, 2023 that the game will be delisted from all storefronts on August 18, 2023, the same day where ILLUSION's brand owner Ione Plus deprecate the ILLUSION brand and exited from the adult video game market.[1] As of December 5, 2023, the Steam version of the game haven't been delisted due to technical issue.

General information

Steam Community Discussions

Availability

Source DRM Notes Keys OS
Retail
DRM-free
Japanese physical and digital releases of the base game. See Patches for update patch.
Windows
Steam
Icon overlay.png
Overseas all-ages version.
Archive of official free 18+ patch available directly from a third-party site.
Windows
Publisher website (unavailable)
DRM-free
Overseas 18+ version on FAKKU, DRM-free. (NSFW link.)[2]
Windows

DLC and expansion packs

Name Notes
Personality Expansion Pack This expansion pack added 3 additional personalities to the Japanese version of the game.
It was integrated in the After Party DLC for the overseas version.
Windows
After School This expansion pack added 4 additional character personalities, additional hairs and costumes, additional maps and other quality-of-life improvements.
It was integrated in the After Party DLC for the overseas version.
Windows
After Party DLC This DLC, made specifically for the overseas version, contains localized contents from both the Personality Expansion Pack and After School expansion packs.
Archive of official free 18+ patch for After Party DLC on Steam is available directly from a third-party site.
Not available for the oversea version released on FAKKU.
Windows
VR This free DLC add VR mode to the game.
Only available for the Japanese version and the Steam release of the overseas version.
Windows
Koikatsu Darkness This 3-part DLCs added 3 additional personalities and a playable dark scenario.
The first two were included as free DLCs, while part 3 is only included as a pre-order bonus for the game Emotion Creators. Only apply to the Japanese version.
Windows

Essential improvements

Patches

The Japanese version of the game requires the external update patch to update it. Following Illusion's deprecation which resulted in the official site's closure, the update patch can be found here. koikatu_02plus_cdp0201hbtks_all.exe (Released on February 1, 2019) is the latest patch.

HF Patch (Unofficial)

The HF Patch for both versions of the game is a massive compilation of all official free content updates for the base game, removal of mosaic censors, many of the most popular plugins and mods used by the community, and fixes for common bugs and issues. This includes fan translations and optional machine translation and subtitle plugins to fill in the gaps in official translations. It also includes the special patch, so players don't need to install the special patch if they plan to install the HF patch on a Steam copy of the game. The latest versions can be found here.

Game data

Configuration file(s) location

System Location
Windows <path-to-game>\UserData\config[Note 2]
Steam Play (Linux) <Steam-folder>/steamapps/compatdata/1073440/pfx/[Note 3]

Save game data location

System Location
Windows <path-to-game>\UserData\save[Note 2]
Steam Play (Linux) <Steam-folder>/steamapps/compatdata/1073440/pfx/[Note 3]
The save folder contains the user's actual in-game progress, however this does not include custom character cards or screenshots. These are stored in <path-to-game>\UserData\chara and <path-to-game>\UserData\cap respectively.

Save game cloud syncing

System Native Notes
Steam Cloud

Video

The game engine may allow for manual configuration of the game via its variables. See the Unity page for more details.

Input

Keyboard and mouse State Notes
Remapping
See the glossary page for potential workarounds.
Mouse acceleration
Mouse sensitivity
Mouse input in menus
Mouse Y-axis inversion
Controller
Controller support
Controller types
Tracked motion controllers
Button/gesture prompts
Additional information
Haptic feedback

Audio

Audio feature State Notes
Separate volume controls
Separate sliders for background music, environmental sounds, system (menu) sounds, and gameplay sounds. Also includes individual sliders for each character personality type's voice.
Surround sound
Subtitles
Included in the HF Patch
Closed captions
Mute on focus lost
Royalty free audio

Localizations

Language UI Audio Sub Notes
English
English subtitles included as a plugin in the HF Patch
Simplified Chinese
Traditional Chinese
Japanese
Japanese UI is natively available in the Japanese version only, but may be enabled in the overseas versions by installing the HF patch

VR Support

Requires the free official VR DLC or the unofficial VR mod included in the HF Patch

Other information

API

Technical specs Supported Notes
Direct3D 11
Executable 32-bit 64-bit Notes
Windows

Middleware

No middleware information; you can edit this page to add it.

System requirements

Windows
Minimum Recommended
Operating system (OS) 7, 8.1, 10
Processor (CPU) Intel Core i3-4000 Series
System memory (RAM) 4 GB
Hard disk drive (HDD) 20 GB
Video card (GPU) Nvidia GeForce GTX 500 Series
AMD Radeon HD6000 Series
1 GB of VRAM
Sound (audio device) DirectSound (DirectX® 9.0c)
A 64-bit operating system is required.


Notes

  1. コイカツ! in Japan.
  2. 2.0 2.1 When running this game without elevated privileges (Run as administrator option), write operations against a location below %PROGRAMFILES%, %PROGRAMDATA%, or %WINDIR% might be redirected to %LOCALAPPDATA%\VirtualStore on Windows Vista and later (more details).
  3. 3.0 3.1 File/folder structure within this directory reflects the path(s) listed for Windows and/or Steam game data (use Wine regedit to access Windows registry paths). Games with Steam Cloud support may store data in ~/.steam/steam/userdata/<user-id>/1073440/ in addition to or instead of this directory. The app ID (1073440) may differ in some cases. Treat backslashes as forward slashes. See the glossary page for details.

References

  1. Notice of Termination of Activities - ILLUSION (Japanese) - last accessed on July 14, 2023
  2. DRM on FAKKU - last accessed on 2021-07-02