AppSeed launches a new game from its mystery-solving app "Illustration Detective! 9 Card Mystery", a new challenge for Illustration Detective with the power of deduction.

2025.04.18 11:30

AppSeed合同会社

A new challenge will be added to the popular mystery solving application "Illustration Detective" ( https://app-seed.com/tantei/ ), which has been downloaded a total of more than 300,000 times. A new game, "9 Card Mystery," in which players use intuition x logic to get to the bottom of a case, will be available from April 18. In addition, a premium plan that allows users to hide advertisements, switch designs, and access new content will be launched at the same time.

謎解きアプリ「イラスト探偵」(1)

Illustration Detective" (1), a mystery-solving application

What is "Illustration Detective"?

Illustration Detective" is a puzzle-solving game in which players solve mysteries by reading clues hidden in illustrations. By paying attention to the dialogue and detailed descriptions of the characters, players may even become great detectives. This application is popular among children and adults of all ages, and is a must-have for mystery lovers.

謎解きアプリ「イラスト探偵」(3)

Mystery-solving application "Illustration Detective" (3)

■New game "9 Card Mystery" is now available!

Find the card that gets to the heart of the case from the few clues you have.

9 Card Mystery" is a card-based deduction game in which the player must deduce the truth from the information on the nine cards.

Red: The most important clue (getting closer to the truth)

Yellow: Important supplementary information

Green: Lucky card with luck on your side (no point consumption)

White: Normal clue

The objective of the game is to find the truth of the case from as few clues as possible by spending "Points" set for each problem and drawing cards. If you fail to deduce the truth, your points will decrease and you risk game over...

You can play up to the second question for free; the third and later questions can be enjoyed only by Premium Plan subscribers.

Questions will be added regularly in the future.

新ゲーム「9カードミステリー」追加(1)

New game "9 Card Mystery" added (1)

新ゲーム「9カードミステリー」追加(2)

New game "9 Card Mystery" (2)

Premium plan offers even more comfort! Three themes of the world to enjoy!

With this update, a monthly premium plan is also available.

The following benefits are available with the Premium Plan:

Completely hides advertisements in the application.

Three different theme designs to choose from

Access to all questions of the new game "9 Card Mystery" (more will be added as needed)

Three theme designs to choose from

Existing design: Casual and friendly, original style unique to Illustration Detective.

New Design 1: Puzzle & Clue motif design - Calm green with orange and red color scheme.

New Design 2: Classical Noir Design - Less casual and more adult-oriented.

Premium customers can choose the design that best suits their play style and mood.

テーマデザインを3種類から自由に切り替え可能(1)

The theme design can be freely switched among three types (1).

Future Prospects

We plan to add new stories and game modes to "Illustration Detective" in the future. We will continue to challenge ourselves as an application that delivers a little "inspiration" and "discovery" in daily life, evolving together with our users.

Illustration x Reasoning, and New Challenges

Illustration Detective" is a one-of-a-kind mystery-solving application that combines the "power of observation" to decipher clues from illustrations and the "power of deduction" to decipher mysteries hidden in the story. 1-complete scenarios provide fast-paced enjoyment, and the visual presentation is visually pleasing.

9 Card Mystery" was created as a new challenge for fans of "Illustration Detective" to use their brains even more.

Recommended for

People who want to feel like a detective in investigation games and games to find the culprit.

People who like to play suspense games where they have to deduce the truth of a case

People who are looking for a mystery game that is popular among puzzle-solving game beginners.

I want to enjoy solving mysteries as a detective.

I like mystery games where the detective has to solve a mystery or investigate a case.

Play Now!

Illustration Detective" is available for free download.

Download here↓.

iOS version ： https://apps.apple.com/jp/app/id1563534755

Android version ： https://play.google.com/store/apps/details?id=com.appseed.tantei