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**Title**: Riddle Joker
**Length**: Long (30 - 50 hours)
**Year**: Japan 2018-03-30, English Version 2020-12-18
**Developer**: Yuzusoft
**Publishers**: NekoNyan
**Language**: English, Japanese, Chinese
**Voice**: Japanese
**Description**:
Source: [Official Site](http://riddle.nekonyansoft.com/), [MangaGamer](https://www.mangagamer.com/r18/detail.php?product_code=1210)
**Important**:
1. No need to install.
**Screenshots**:
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