The Game Census
Riddle Joker cover art

Riddle Joker

YUZUSOFT · NekoNyan Ltd. · 2020-12-18

SteamGOG

AdventureCasual

Modes: Single player

Releases: Dec 18, 2020 (PC (Microsoft Windows))

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.

Riddle Joker is a 2020 Adventure and Casual game priced at $34.99, with an estimated 100,000 to 200,000 owners and an Overwhelmingly Positive review sentiment (98% of 7,041 reviews).

92
playing now
98%
positive of 7.0k reviews
Overwhelmingly Positive
steam's rating (official)
100,000–200,000
owners (SteamSpy est.)
platinum
deck/linux tier (ProtonDB)
Unsupported
Steam Deck (Valve)
SteamOS: Unsupported
$34.99
steam price (US)

92 players in-game as of 2026-10-14 14:00 UTC (census sample)

Trailer

Riddle Joker trailer thumbnail

RIDDLE JOKER OPムービー

≈403,501 YouTube results for this game's trailer search

Health check

Healthy
  • · 92 players in-game at the last census sample.
  • · 399 reviews in the last 8 weeks (~50/week).
  • · Review velocity down 12% vs the prior 8 weeks.
  • · Top 4% of 28,739 Adventure games in the census by review count.

Health tier since 2026-08-28

Estimated sales: 141k–317k copies

Review-multiple estimate from 7,041 total reviews — how this is computed.

Current store prices

GOG$34.99

Deal snapshots via CheapShark, refreshed daily.

All-time low: $18.54 at Steam (2026-06-25)via IsThereAnyDeal

12-month high $34.99 · on sale 10 of 66 observed days · $16.45 above the all-time low (census price snapshots)

Review momentum

PositiveNegative
51551520202026Week of 2020-12-01: 515 positiveWeek of 2020-12-01: 2 negativeWeek of 2021-01-01: 227 positiveWeek of 2021-01-01: 4 negativeWeek of 2021-02-01: 220 positiveWeek of 2021-02-01: 2 negativeWeek of 2021-03-01: 95 positiveWeek of 2021-04-01: 115 positiveWeek of 2021-04-01: 1 negativeWeek of 2021-05-01: 88 positiveWeek of 2021-05-01: 4 negativeWeek of 2021-06-01: 94 positiveWeek of 2021-07-01: 157 positiveWeek of 2021-07-01: 1 negativeWeek of 2021-08-01: 120 positiveWeek of 2021-08-01: 1 negativeWeek of 2021-09-01: 76 positiveWeek of 2021-09-01: 5 negativeWeek of 2021-10-01: 58 positiveWeek of 2021-10-01: 3 negativeWeek of 2021-11-01: 239 positiveWeek of 2021-11-01: 1 negativeWeek of 2021-12-01: 66 positiveWeek of 2021-12-01: 1 negativeWeek of 2022-01-01: 73 positiveWeek of 2022-01-01: 1 negativeWeek of 2022-02-01: 78 positiveWeek of 2022-03-01: 69 positiveWeek of 2022-03-01: 1 negativeWeek of 2022-04-01: 55 positiveWeek of 2022-04-01: 1 negativeWeek of 2022-05-01: 56 positiveWeek of 2022-06-01: 50 positiveWeek of 2022-07-01: 72 positiveWeek of 2022-07-01: 2 negativeWeek of 2022-08-01: 51 positiveWeek of 2022-09-01: 30 positiveWeek of 2022-10-01: 28 positiveWeek of 2022-11-01: 43 positiveWeek of 2022-11-01: 1 negativeWeek of 2022-12-01: 91 positiveWeek of 2023-01-01: 83 positiveWeek of 2023-01-01: 1 negativeWeek of 2023-02-01: 50 positiveWeek of 2023-03-01: 58 positiveWeek of 2023-03-01: 2 negativeWeek of 2023-04-01: 62 positiveWeek of 2023-05-01: 68 positiveWeek of 2023-05-01: 2 negativeWeek of 2023-06-01: 47 positiveWeek of 2023-07-01: 117 positiveWeek of 2023-07-01: 2 negativeWeek of 2023-08-01: 118 positiveWeek of 2023-08-01: 2 negativeWeek of 2023-09-01: 47 positiveWeek of 2023-10-01: 71 positiveWeek of 2023-11-01: 71 positiveWeek of 2023-11-01: 2 negativeWeek of 2023-12-01: 94 positiveWeek of 2023-12-01: 1 negativeWeek of 2024-01-01: 99 positiveWeek of 2024-01-01: 3 negativeWeek of 2024-02-01: 153 positiveWeek of 2024-02-01: 3 negativeWeek of 2024-03-01: 116 positiveWeek of 2024-03-01: 5 negativeWeek of 2024-04-01: 87 positiveWeek of 2024-04-01: 1 negativeWeek of 2024-05-01: 91 positiveWeek of 2024-05-01: 4 negativeWeek of 2024-06-01: 91 positiveWeek of 2024-06-01: 1 negativeWeek of 2024-07-01: 152 positiveWeek of 2024-07-01: 5 negativeWeek of 2024-08-01: 137 positiveWeek of 2024-08-01: 6 negativeWeek of 2024-09-01: 88 positiveWeek of 2024-09-01: 5 negativeWeek of 2024-10-01: 88 positiveWeek of 2024-10-01: 1 negativeWeek of 2024-11-01: 96 positiveWeek of 2024-11-01: 1 negativeWeek of 2024-12-01: 93 positiveWeek of 2024-12-01: 6 negativeWeek of 2025-01-01: 96 positiveWeek of 2025-01-01: 1 negativeWeek of 2025-02-01: 97 positiveWeek of 2025-02-01: 1 negativeWeek of 2025-03-01: 100 positiveWeek of 2025-03-01: 8 negativeWeek of 2025-04-01: 50 positiveWeek of 2025-04-01: 2 negativeWeek of 2025-05-01: 44 positiveWeek of 2025-05-01: 2 negativeWeek of 2025-06-01: 78 positiveWeek of 2025-07-01: 85 positiveWeek of 2025-07-01: 4 negativeWeek of 2025-08-01: 63 positiveWeek of 2025-08-01: 1 negativeWeek of 2025-09-01: 37 positiveWeek of 2025-09-01: 3 negativeWeek of 2025-10-01: 54 positiveWeek of 2025-10-01: 1 negativeWeek of 2025-11-01: 31 positiveWeek of 2025-11-01: 1 negativeWeek of 2025-12-01: 53 positiveWeek of 2025-12-01: 1 negativeWeek of 2026-01-01: 46 positiveWeek of 2026-01-01: 4 negativeWeek of 2026-02-01: 56 positiveWeek of 2026-02-01: 1 negativeWeek of 2026-03-01: 61 positiveWeek of 2026-03-01: 2 negativeWeek of 2026-04-01: 24 positiveWeek of 2026-04-01: 3 negativeWeek of 2026-05-01: 47 positiveWeek of 2026-05-01: 3 negativeWeek of 2026-06-01: 40 positiveWeek of 2026-07-01: 51 positiveWeek of 2026-07-01: 7 negativeWeek of 2026-08-01: 38 positiveWeek of 2026-08-01: 4 negative
Weekly review counts (Steam review histogram). Positive above the line, negative below.

Players online

12202026-09-14 23:00 — 15 players2026-09-16 08:00 — 58 players2026-09-17 15:00 — 81 players2026-09-18 23:00 — 18 players2026-09-20 06:00 — 49 players2026-09-21 14:00 — 82 players2026-09-22 21:00 — 16 players2026-09-24 05:00 — 36 players2026-09-25 12:00 — 70 players2026-09-26 20:00 — 29 players2026-09-28 03:00 — 30 players2026-09-29 11:00 — 49 players2026-09-30 18:00 — 40 players2026-10-02 02:00 — 41 players2026-10-03 09:00 — 87 players2026-10-04 18:00 — 66 players2026-10-06 01:00 — 37 players2026-10-07 09:00 — 74 players2026-10-08 16:00 — 73 players2026-10-10 00:00 — 20 players2026-10-11 07:00 — 105 players2026-10-12 15:00 — 96 players2026-10-13 22:00 — 13 players2026-10-14 14:00 — 92 players
Concurrent players, hourly average, last 30 days (census samples).
34236Dec 2020Aug 2026Dec 2020 — avg 342 · peak 703Feb 2021 — avg 131 · peak 326Apr 2021 — avg 86 · peak 277Jun 2021 — avg 69 · peak 248Aug 2021 — avg 95 · peak 181Oct 2021 — avg 54 · peak 134Dec 2021 — avg 65 · peak 149Feb 2022 — avg 83 · peak 204Apr 2022 — avg 72 · peak 152Jun 2022 — avg 59 · peak 180Aug 2022 — avg 58 · peak 117Oct 2022 — avg 36 · peak 87Dec 2022 — avg 89 · peak 241Feb 2023 — avg 55 · peak 138Apr 2023 — avg 64 · peak 202Jun 2023 — avg 57 · peak 142Aug 2023 — avg 111 · peak 284Oct 2023 — avg 63 · peak 178Dec 2023 — avg 80 · peak 210Feb 2024 — avg 140 · peak 382Apr 2024 — avg 96 · peak 281Jun 2024 — avg 87 · peak 218Aug 2024 — avg 137 · peak 343Oct 2024 — avg 120 · peak 387Dec 2024 — avg 116 · peak 282Feb 2025 — avg 137 · peak 345Apr 2025 — avg 77 · peak 224Jun 2025 — avg 93 · peak 241Aug 2025 — avg 97 · peak 223Oct 2025 — avg 73 · peak 221Dec 2025 — avg 82 · peak 203Feb 2026 — avg 88 · peak 245Apr 2026 — avg 64 · peak 157Jun 2026 — avg 58 · peak 155Aug 2026 — avg 64 · peak 140
Monthly average players (source: steamcharts.com) — history via steamcharts.com; live census sampling since Aug 2026.

Price history

$34.99$18.542020-12-182026-10-142020-12-18 — best price $31.492021-04-10 — best price $34.992021-10-28 — best price $26.242022-01-05 — best price $34.992022-06-06 — best price $26.242022-07-17 — best price $34.992022-11-29 — best price $34.992023-01-05 — best price $34.992023-03-16 — best price $21.692023-05-08 — best price $34.992023-08-07 — best price $20.992023-11-28 — best price $34.992024-01-05 — best price $34.992024-02-14 — best price $20.292024-05-13 — best price $34.992024-09-30 — best price $20.292024-12-04 — best price $34.992025-01-24 — best price $19.942025-03-20 — best price $34.992025-08-25 — best price $19.942025-12-04 — best price $19.242026-02-20 — best price $19.942026-03-14 — best price $34.992026-06-25 — best price $18.542026-08-31 — best price $34.992026-09-05 — best price $34.992026-09-10 — best price $34.992026-09-15 — best price $34.992026-09-20 — best price $34.992026-09-25 — best price $34.992026-09-30 — best price $34.992026-10-05 — best price $34.992026-10-10 — best price $34.992026-10-14 — best price $34.99
Lowest recorded price across tracked stores, per day (census snapshots).

Completion

21
achievements tracked
84.3%
earned "What exactly is the riddle supposed to be?"
40.9%
median achievement earned by

Global achievement rates from Steam.

Details

WindowsSingle-playerSteam AchievementsSteam Trading CardsPartial Controller SupportSteam CloudRemote Play on PhoneRemote Play on TabletFamily Sharing

3 supported languages: English, Japanese, Simplified Chinese

Console footprint

PlatformPlayers trackedCompletionTrophies/achievements
Steam (Steam)1,45040%21

Players tracked by Exophase (achievement/trophy trackers) — a sample of the player base, not total sales.

Where its players are

Share of Steam reviews by language (top languages measured) — a proxy for where the player base lives.

Player tags

FPSCuteAnimeCasualNudityFantasyRomanceRelaxingNarrationDating Sim

Census log

Computed from census-recorded observations only — dates are observation dates.

Players also track

Porno Studio TycoonHouse PartyTwins of the PastureVR Kanojo / VRカノジョ

Similarity via IGDB.

Official site ↗