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Riddle Joker
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.
What players say
Steam review score and the most-helpful voices, which may include critical ones. Data as of 2026-05-20.
“"Riddle Joker" is a solid visual novel that focuses more on character interactions and romance than on its overall plot. We play as Satoru, a secret agent who enrolls in an academy while hiding his identity. The premise involves supernatural abilities but keeping things…”
— a player, Steam review · 24 hrs played“the worldbuilding is pretty interesting, but the character designs and storylines in this game feel a bit too similar to other yuzusoft titles. nanami’s character is really well written though, and her route as the imouto is just perfect and cute, which kinda makes up for the…”
— a player, Steam review · 42 hrs played“First Yuzusoft game, one that I have been eyeing for a while. First impressions was massive since I wasn't expecting the Flowchart mechanic, which I wish other VNs and even actual games have so I can just quickly select my choices without restarting all over again and again. The…”
— a player, Steam review · 62 hrs playedPlayer activity
Monthly average concurrent players. Live count fetched 2026-07-24 01:01 UTC · history via SteamCharts.
Achievement stats
Global completion rates across all Steam players — a data view of how far people actually get. Source: Steam official stats · as of 2026-07-25.
Price tracking
US-region pricing (USD), sampled twice daily by our own tracker since 2026-07-11. Steam prices vary by region — always confirm your local price on Steam.
Regional prices at last sample, in local currency — Steam sets each region's price independently.
Cheapest → most expensive, converted to USD at ECB reference rates (2026-07-24). Relative comparison only.
Latest official news
Developer announcements via the Steam news API — links go to the original posts. More across all games on the news hub.
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Screenshots
Official Steam store screenshots — click any shot to enlarge.
Facts & details
From the Steam store record, snapshot 2026-05-20.
| Genres | Adventure, Casual |
| Player tags | Visual Novel · Sexual Content · Romance · Cute · Dating Sim · Story Rich · Anime · Casual · FPS · Nudity · Choices Matter · Relaxing (SteamSpy community voting) |
| Features | Single-player · Steam Achievements · Steam Trading Cards · Partial Controller Support · Steam Cloud · Remote Play on Phone · Remote Play on Tablet · Family Sharing |
| Languages | English, Japanese * , Simplified Chinese, Traditional Chinese * |
| Achievements | 21 |
| Estimated owners | 100,000 – 200,000 (SteamSpy) |
| Official site | http://riddle.nekonyansoft.com/ |
Minimum system requirements (PC)
Minimum: OS *: Windows 7 or newer Processor: CPU 1.3GHz or more Memory: 2 GB RAM DirectX: Version 9.0c Storage: 8 GB available space