The Game Census
伊勢志摩ミステリー案内 偽りの黒真珠 cover art

伊勢志摩ミステリー案内 偽りの黒真珠

Happymeal Inc. · Flyhigh Works · 2019-07-24

Steam

AdventureRPG

Modes: Single player · Perspectives: Side view

Releases: Jun 20, 2019 (PlayStation 4), Jul 23, 2019 (PC (Microsoft Windows))

舞台は東京から伊勢志摩へ…… ファミコン風アドベンチャーゲームの完全新作！

伊勢志摩ミステリー案内 偽りの黒真珠 is a 2019 Adventure and RPG game priced at $9.99, with a Positive review sentiment (84% of 44 reviews) and an estimated 20,000 to 50,000 owners.

0
playing now
84%
positive of 44 reviews
Positive
steam's rating (official)
20,000–50,000
owners (SteamSpy est.)
pending
deck/linux tier (ProtonDB)
Unknown
Steam Deck (Valve)
SteamOS: 0
$9.99
steam price (US)

0 players in-game as of 2026-10-14 09:00 UTC (census sample)

Retro Mystery Club Vol.1: The Ise-Shima Case is a 2019 adventure game. It is a mystery-themed game set in modern-day Tokyo where the player takes the role of a detective along with their partner Ken. After the discovery of the death of a homeless man, various clues are left behind, leaving to an incident that involves black pearls.

Health check

Quiet
  • · 0 players in-game at the last census sample.
  • · 8 reviews in the last 8 weeks (~1/week).
  • · Review velocity down 11% vs the prior 8 weeks.
  • · Top 57% of 28,739 Adventure games in the census by review count.

Health tier since 2026-09-02

All-time low: $6.99 at Steam (2025-10-01)via IsThereAnyDeal

12-month high $9.99 · on sale 5 of 10 observed days (census price snapshots)

Review momentum

PositiveNegative
4420192026Week of 2019-07-01: 4 positiveWeek of 2019-08-01: 2 positiveWeek of 2019-08-01: 1 negativeWeek of 2019-09-01: 1 positiveWeek of 2019-11-01: 2 positiveWeek of 2019-12-01: 1 negativeWeek of 2020-02-01: 1 positiveWeek of 2020-04-01: 1 positiveWeek of 2020-06-01: 2 positiveWeek of 2020-07-01: 2 positiveWeek of 2020-08-01: 2 positiveWeek of 2021-01-01: 2 positiveWeek of 2021-02-01: 1 positiveWeek of 2021-07-01: 1 positiveWeek of 2021-09-01: 1 positiveWeek of 2021-10-01: 1 positiveWeek of 2022-01-01: 1 positiveWeek of 2022-03-01: 2 positiveWeek of 2022-04-01: 1 positiveWeek of 2022-05-01: 1 positiveWeek of 2022-10-01: 1 negativeWeek of 2022-11-01: 1 positiveWeek of 2022-11-01: 1 negativeWeek of 2023-02-01: 1 positiveWeek of 2023-05-01: 1 positiveWeek of 2023-09-01: 1 positiveWeek of 2023-10-01: 1 negativeWeek of 2024-04-01: 1 positiveWeek of 2024-08-01: 1 negativeWeek of 2025-09-01: 1 negativeWeek of 2025-10-01: 1 positiveWeek of 2026-01-01: 2 positive
Weekly review counts (Steam review histogram). Positive above the line, negative below.

Players online

202026-09-15 10:00 — 0 players2026-09-16 18:00 — 0 players2026-09-18 01:00 — 0 players2026-09-19 09:00 — 0 players2026-09-20 16:00 — 0 players2026-09-22 00:00 — 1 players2026-09-23 08:00 — 2 players2026-09-24 15:00 — 0 players2026-09-25 23:00 — 0 players2026-09-27 06:00 — 1 players2026-09-28 14:00 — 0 players2026-09-29 21:00 — 0 players2026-10-01 05:00 — 0 players2026-10-02 12:00 — 0 players2026-10-03 20:00 — 0 players2026-10-05 04:00 — 0 players2026-10-06 12:00 — 0 players2026-10-07 19:00 — 0 players2026-10-09 03:00 — 0 players2026-10-10 10:00 — 1 players2026-10-11 18:00 — 0 players2026-10-13 02:00 — 0 players2026-10-14 09:00 — 0 players
Concurrent players, hourly average, last 30 days (census samples).

Price history

$9.99$6.992019-07-262026-07-092019-07-26 — best price $9.992020-04-09 — best price $9.992020-08-20 — best price $9.992020-11-09 — best price $9.992021-01-05 — best price $9.992021-05-06 — best price $9.992021-08-19 — best price $9.992021-11-12 — best price $9.992021-12-01 — best price $9.992022-01-05 — best price $9.992022-02-03 — best price $9.992022-05-28 — best price $9.992022-07-07 — best price $9.992022-11-29 — best price $9.992023-01-05 — best price $9.992023-02-27 — best price $9.992023-03-23 — best price $9.992023-07-13 — best price $9.992023-08-14 — best price $9.992023-11-28 — best price $9.992024-01-04 — best price $9.992024-03-21 — best price $9.992024-07-11 — best price $9.992024-12-04 — best price $9.992025-01-02 — best price $9.992025-03-20 — best price $9.992025-07-10 — best price $9.992025-10-06 — best price $9.992026-01-05 — best price $9.992026-01-19 — best price $9.992026-03-26 — best price $9.992026-05-01 — best price $9.992026-07-09 — best price $9.99
Lowest recorded price across tracked stores, per day (census snapshots).

Attention

1202026-05-31 — 3 pageviews2026-06-04 — 6 pageviews2026-06-08 — 5 pageviews2026-06-12 — 5 pageviews2026-06-16 — 1 pageviews2026-06-20 — 3 pageviews2026-06-24 — 3 pageviews2026-06-28 — 2 pageviews2026-07-02 — 3 pageviews2026-07-06 — 5 pageviews2026-07-10 — 2 pageviews2026-07-14 — 8 pageviews2026-07-18 — 3 pageviews2026-07-22 — 8 pageviews2026-07-26 — 2 pageviews2026-07-30 — 4 pageviews2026-08-03 — 6 pageviews2026-08-07 — 5 pageviews2026-08-11 — 4 pageviews2026-08-15 — 6 pageviews2026-08-19 — 3 pageviews2026-08-23 — 7 pageviews2026-08-27 — 3 pageviews2026-08-31 — 1 pageviews2026-09-04 — 4 pageviews2026-09-08 — 6 pageviews2026-09-12 — 5 pageviews2026-09-16 — 6 pageviews2026-09-20 — 1 pageviews2026-09-24 — 3 pageviews2026-09-28 — 0 pageviews2026-10-02 — 12 pageviews2026-10-06 — 7 pageviews2026-10-10 — 4 pageviews
Daily Wikipedia pageviews (attention proxy, census-recorded).

Completion

12
achievements tracked
78.7%
earned "そうだ！伊勢に行こう！"
20.2%
median achievement earned by

Global achievement rates from Steam.

Details

WindowsSingle-playerSteam AchievementsPartial Controller SupportFamily Sharing1 DLC

1 supported languages: Japanese

Post-launch support: 1 DLC released, first 2019-07-25 (Steam store data)

Player tags

2DJRPG1980sRetroCasualMysteryAdventureDetectiveOld SchoolStory Rich

Census log

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

Players also track

TanziaOmensight: Definitive EditionWeapon Shop FantasyEternity: The Last UnicornDungeon Of Dragon KnightSuper Seducer 2 - Advanced Seduction TacticsSENRAN KAGURA ReflexionsONINAKI

Similarity via IGDB.

Official site ↗