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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. Score via Steam as of 2026-09-29 · quoted reviews as of 2026-10-15.
“"Even if you do something the whole world judges you for, I won't. I'll always be with you, and I'll always love you. I'll take the blame with you, no matter what it's for. So don't forget that." Man. Reality sucks.”
— a player, Steam review · 112 hrs played“The first 5 hours I have played already really got me hooked on this release. Yes you could say there are a few minor negative things like copying quite a few of the features of sprites of older releases of them and making similar personalities for the girls, however those are…”
— a player, Steam review · 50 hrs played“7.5/10 Another Galgame from Yuzusoft, and I think this game continues their usual features, a story brisk, smooth, but not too mediocre, it is indeed a suitable choice for players to get proper rest from the busy life. The biggest shortcoming of this game is also too plain.…”
— a player, Steam review · 52 hrs playedPlayer activity
Monthly average concurrent players. Live data self-collected from the Steam API · history through 2026-06 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 2026-10-20.
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 (2026-10-20). 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 2026-05-13.
| 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 |
| 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