Riddle Joker
Released Dec 2020
For decades, superpowers and psychic abilities were thought to be mere science fiction, but the discovery of a certain particle called the "Astron" at the end of the 20th century proved to the world that these wondrous phenomena were real.
97% positive · 7,053 reviews
Done
All announced content has been released
High confidence
Done
All announced content has been released
High confidence
Where to buy
Steam $34.99
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Evaluation
Riddle Joker is a Japanese visual novel published by NekoNyan Ltd. on Steam on December 18, 2020. It is a complete, self-contained story with no post-launch content cycle — the store description describes a finished narrative product with no mention of expansions, DLC, or ongoing updates. There are no DLC listings of any kind associated with this title.
The developer news feed (23 posts scanned) contains zero posts specifically about Riddle Joker after its release. All of the news activity from NekoNyan's account relates to entirely separate games in their publishing catalog — titles such as Renai X Royale, Aokana EXTRA2, My Klutzy Cupid, Cerulean Days, Secret Agent, and Irotoridori no Sekai. None of these posts reference Riddle Joker or any planned content for it.
This is consistent with how visual novels in this genre typically operate: they ship as complete narrative packages at launch with no expectation of post-launch story content or patches. The game launched complete on December 18, 2020, and all available evidence confirms it has remained a finished product since that date.
Evidence
Store description presents Riddle Joker as a complete, self-contained visual novel with a defined cast and story. No mention of DLC, expansions, or ongoing content.
All 23 developer news posts scanned relate exclusively to other titles in NekoNyan's publishing catalog. No post-launch updates, patches, or content announcements exist for Riddle Joker itself.
Media
Details
Developer
Publisher
NekoNyan Ltd.
Achievements
21
Platform
Windows
Controller
partial support
Steam Deck
Unsupported
Players
Single-player
About this game
Riddle Joker is a Japanese-style visual novel produced by Yuzusoft, a Japanese developer of romance VNs.
The game won numerous awards on the year of its release in Japan for its art, music, and characters.
Story:
For decades, superpowers and psychic abilities were thought to be mere science fiction, but the discovery of a certain particle called the "Astron" at the end of the 20th century proved to the world that these wondrous phenomena were real. Nowadays, these abilities have been dubbed "astral abilities," with those who can wield them being knows as "Astrals."
Arihara Satoru is but an ordinary person living in this futuristic world.
However, beneath that guise, he's actually a secret agent working for an organization that uses Astrals.
One day, he receives a new mission:
Pose as a student and infiltrate a famous academy for Astrals.
After successfully transferring into the academy together with his sister Arihara Nanami, he settles into his new life there, meeting new friends like his classmates Mitsukasa Ayase and Nijouin Hazuki, and his upperclassman Shikibe Mayu, among others.
Until an unfortunate accident leads to Mitsukasa Ayase finding out his true identity! And in that situation, he also learns that she has her own big secret...
CHARACTERS
Are these done yet?
Last evaluated Jun 25, 2026
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