Lumiri GameDB
Game library / Riddle Joker
Riddle Joker
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GOG Steam

Riddle Joker

Catalogue information flags mature content for this game.

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.

Released · 2020-12-18

At a glance

About this game

Core game information and the store records it came from.

Title
Riddle Joker
Content
Game
Release date
2020-12-18
Developer
YUZUSOFT
Platforms
Windows
Steam Deck
Unsupported Valve's compatibility rating
Connected stores
2
GOG GOG source details
Store title
Riddle Joker
Product ID
1606830592
Developer
Yuzusoft
Publisher
NekoNyan Ltd., HIKARI FIELD
Store release date
2020-12-18
Source checked
2026-11-11 05:22 UTC

Open official store page ↗

Steam Steam source details
Store title
Riddle Joker
Product ID
1277930
Developer
YUZUSOFT
Publisher
NekoNyan Ltd., HIKARI FIELD
Store platforms
Windows
Source checked
2026-10-20 15:16 UTC

Open official store page ↗

How you can play

Features and tags

Select a feature to find other games that have it.

Store tags

Genres

  • Adventure
  • Casual

Categories and genres from the Steam store, observed 2026-10-20. Store tags from Steam and GOG, as players and the store apply them.

Compare & explore

One game, connected stores

Each store keeps its own prices and observations. We prefer the latest recorded EUR price for Europa. When the displayed currency differs from the store amount, a separate approximate value may use the latest available ECB reference rate.

Some store links may be affiliate links. We may earn a commission from qualifying purchases, at no extra cost to you. This does not affect prices, ratings or rankings. How commercial links work.

Lumiri price context

Recorded price comparison

Matching store titles. One currency. One market.

EUR SE

Lowest recorded amount

15.89 EUR

GOG

Recorded 5 days ago Over 48 h old

Difference between stores

18.10 EUR

Lowest to highest included amount.

2 comparable stores

Distance from observed low

At observed low

GOG listing only. Low: 15.89 EUR.

Last seen
Newest included record
Oldest included record

2 records are over 48 hours old.

2 included price records from 2 stores · 2 linked listings

See the 2 included observations
  • GOG history →Riddle Joker
    15.89 EUR
    5 days ago · over 48 h old
  • Steam history →Riddle Joker
    33.99 EUR
    23 days ago · over 48 h old
How this comparison works

Only original EUR amounts recorded for SE and matching titles linked to this game are compared. Edition words and numbers must match. Other editions, source-market fallbacks and currency estimates are excluded.

These are recorded observations. Check the store for the current price, availability and included content. Historical lows belong to the named listing in this market and reflect the history Lumiri GameDB has collected.

Ratings at a glance

Community and editorial ratings

90/100

Lumiri average

2 included sources · 5,769 underlying reviews · source range 82–98

GOG

GOG

82/100 4.1/5

82/100

20 user reviews · GOG user rating

Included in the combined rating.

Checked
Steam

Steam

98/100 98% positive

98/100

5,749 user reviews · Overwhelmingly Positive

5,624 positive · 125 negative

Included in the combined rating.

Checked

View the rating chart · User sources need 10 reviews; verified editorial sources qualify directly. The combined score is the arithmetic mean of included sources, not weighted by review count.

Game challenges

Achievements

21 achievements collected from supported stores. Percentages show the global share of players who unlocked each achievement, not personal player activity.

Steam

What exactly is the riddle supposed to be?

Start a new game

84.3% of players unlocked this
Steam

Hanging by a thread

Nanami hanging onto the rope

66.8% of players unlocked this
Steam

Plenty of room to grow

Have a serious discussion about a certain topic with Ayase

63.2% of players unlocked this
Steam

Collateral damage

Hazuki is getting hit as an innocent bystander

61.8% of players unlocked this
Steam

I want to unsubscribe from Ayase's Cat Facts

Listen to Ayase talking about cats

55.0% of players unlocked this
Steam

My little sister, my back-up partner

Start Nanami's Route

49.0% of players unlocked this
Steam

The padded beauty

Start Ayase's Route

46.4% of players unlocked this
Steam

A win is a win, right?

Ayase losing playing cards

44.2% of players unlocked this
Steam

A fashionable lab coat

Start Mayu's Route

42.4% of players unlocked this
Steam

You are my shogun

Start Hazuki's Route

41.8% of players unlocked this
Steam

A special reward

Clear Nanami's Route

40.8% of players unlocked this
Steam

Top secret

Aren't you curious about Mayu's browser history?

40.1% of players unlocked this
Steam

JUDGMENT

Watch Hazuki's "performance"

39.2% of players unlocked this
Steam

Princess carry

Save Hazuki from harm

38.9% of players unlocked this
Steam

A picture perfect smile

Clear Ayase's Route

38.6% of players unlocked this
Steam

Graduation gift

Clear Mayu's Route

36.1% of players unlocked this
Steam

Justice and love

Clear Hazuki's Route

35.2% of players unlocked this
Steam

Where did I go wrong

Just a normal ending

32.0% of players unlocked this
Steam

A tiny bundle of energy

Start Chisaki's Route

31.5% of players unlocked this
Steam

A happy happy life

Clear Chisaki's Route

29.2% of players unlocked this
Steam

Whoooooaaa! Looking good, Joker!

Clear all Achievements

22.3% of players unlocked this
Player activity

Observed Steam player history

Latest 1,000 points at most. Bucket averages; the first bucket is included in full. Summary averages are approximate.

Last observed Steam players
37
2026-11-11 07:12 UTC
Observed peak · 30d
61
Within the displayed history
All-time observed peak
61
· since Lumiri started observing
Average players · 30d
28
6 local samples · approximate for grouped data
Observed player history Local bucket averages over time, in UTC. Exact values follow below. Lines connect collected points; gaps have not been measured. 0 17 34 51 68 2026-10-19 00:00 UTC · 17 players2026-10-22 00:00 UTC · 61 players2026-10-28 00:00 UTC · 14 players2026-11-02 00:00 UTC · 18 players2026-11-06 00:00 UTC · 19 players2026-11-11 00:00 UTC · 37 players 2026-10-19 00:00 UTC 2026-11-11 00:00 UTC
View exact player observations
  • 2026-10-19 00:00: 17 average players
  • 2026-10-22 00:00: 61 average players
  • 2026-10-28 00:00: 14 average players
  • 2026-11-02 00:00: 18 average players
  • 2026-11-06 00:00: 19 average players
  • 2026-11-11 00:00: 37 average players

Observed by Lumiri GameDB during 30d. Times are UTC. Lines connect observations; gaps are not measured.

Open full player history

  • Samples: 6
  • Minimum: 14
  • Maximum: 61
  • Average: 28
Recorded prices

Price history · GOG

EUR observations for market FI. History belongs to the selected store listing; regional prices and taxes may differ.

Historical low observed by Lumiri GameDB: 15.89 EUR, last seen

Observed EUR price history Recorded prices over the past year, in UTC. A price holds until the next observation. Exact values follow below. 0 9 18 27 36 2026-10-19 01:27 UTC · 29.99 EUR2026-11-06 04:32 UTC · 15.89 EUR 2026-10-19 01:27 UTC 2026-11-06 04:32 UTC
View 2 recorded prices
  • 2026-10-19 01:27: 29.99 EUR
  • 2026-11-06 04:32: 15.89 EUR (47% off)

Prices observed by Lumiri GameDB in EUR.

Catalogue activity

Recent changes

Prices, release dates and store listing updates we detected. Repeated store refreshes are grouped.

  1. Price drop GOG

    29.99 EUR → 15.89 EUR (−47%)

  2. Store details updated GOG

    Title, product type, release date, availability, platforms, store details