Koikatsu Sunshine
Koikatsu Sunshine is a completed Illusion title built on Unity, listed at Release 12 with a 30 March 2025 update. It is a Japanese dating sim and simulator whose draw is character creation, animated 3DCG scenes and voice work, running on Windows.
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External links. Files are hosted by third parties; check them before running anything.
Screenshots


About Koikatsu Sunshine
Character creation is the centre of the game. You build the cast yourself, adjusting faces, bodies and outfits, then drop those characters into a sunny island setting where the dating sim loop plays out. Illusion's Unity framework renders the 3DCG scenes and keeps the animation smooth, and the cast is voiced rather than silent.
The build is labelled Release 12, so the numbering follows the repack rather than a numbered build. The card lists English machine translation beside the original Japanese, which means menu text and dialogue stay readable even when the phrasing is stiff. Nothing on the card is marked as censored at all.
The download table is the longest part of this page: over a hundred entries, mostly mirrors of the same repack split by host. Pick one host and ignore the rest, because stacking several would only duplicate the same files. Windows is the only platform listed, and no file size is recorded anywhere on the card.
Features
- Unity engine with 3DCG rendering.
- Deep character creation inside the game.
- Voiced Japanese cast.
- Animated dating sim and simulator loop.
- English machine translation included.
How to install
Extract the repack to a folder with a short path, then run the game executable. Keep the folder structure intact, since the Unity data directory and any mod folders are read from the install location.
Requirements
Windows — English machine translation and Japanese text, with Japanese voice work. Unity engine. No file size is recorded on the card.
FAQ
- Is Koikatsu Sunshine playable in English?
- The card lists English machine translation alongside the original Japanese, so text is readable but machine-produced.
- What engine does Koikatsu Sunshine run on?
- Unity, which is what drives the character creator and the animated 3DCG scenes.
- How large is the Koikatsu Sunshine download?
- The card does not record a file size. It lists many mirrors of the same repack instead.
Tags
See also character creation games, 3DCG games, Illusion games.