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Watch trailer on Steam ↗Alice49 EP.0『ダイヤモンドとシュークリーム』
Include0 · Published by Include0 · Official site ↗
Mostly Positive — 73% positive (15 reviews) · 8 achievements
Last updated 28 Sept 2026
Authentic Mystery ADV Alice49 Episode 0 Diamonds and Cream Puffs An adventure game to solve a mystery hidden in a mystery novel.
£3.39
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Price history
Adventure, Indie · 2024 · More under £5 games
Explore hidden mysteries within a storybook as you solve puzzles in Alice49 EP.0『ダイヤモンドとシュークリーム』, an indie adventure game from Include0.
About this game
What is Alice49?

Genre: Authentic Mystery ADV

An adventure game in which you solve the mystery of a case hidden in an authentic mystery novel.
With an emphasis on the classic mystery question "who done it?", the objective of the game is to unravel the true culprit who caused the incident.
Concept: unravel the mystery of the novel

The game is divided into a Reasoning Section and a Solution Section. In the Reasoning Section, you can obtain keys (logic keys) to solve mysteries from mystery novels.
In the Solution Section, the player must use the logic key to solve the mystery, and the game is completed when the only person who can commit the crime is proven.
How to Play

Reasoning Section 1: Select keywords from the novel

Select clues (keywords) from the text of the mystery novel to solve the mystery.
[Reasoning Section 2: obtain a logic key by guessing[/b]

From the keywords, select a hypothesis by reasoning to solve the mystery of the case.
↓↓.

Selecting a deduction hypothesis will earn the corresponding logic key.
Solution Section 1: Build up your reasoning

Proceed to deduce based on the logic key and assemble a deductive hypothesis to solve the truth.
Solution Section 2: Nominate the culprit

Once the materials to derive the culprit are available, the name of the culprit can be specified. The game is cleared if the only person capable of committing the crime can be proven.
Character Introduction
Alice Hoshikawa
A mysterious girl appears in the clubroom of the Mystery Research Club.
She offers a book and takes the members of the Mystery Research Club into a world called the D-Book.

Suzuka Houreiin
Her family is one of the leading conglomerates in the country.
Despite her small stature, she is an athletic person, and in junior high school she participated in a national volleyball tournament.
She is still an amateur at mystery, and is a troubled girl who comes up with a lot of unusual answers.

Toji Amami
Head of the Mystery Research Club, which is on the verge of being discontinued.
His favorite things are mathematics and mystery novels. He is extremely athletic.
With a mystery novel in his hand, he has no interest in sports.

System Requirements
Will my PC run this? →Minimum
- OS *: Windows 7/8/8.1/10
- Processor: Intel Core2 Duo or better
- Memory: 4 GB RAM
- Graphics: DirectX 9/OpenGL 4.1 capable GPU DirectX: Version 9.0
- DirectX: Version 9.0
- Storage: 360 MB available space
- Additional Notes: 1280x768 or better Display
Supported Languages
Latest news
Patch NotesOfficial
[Update] Version 2.0.0 is now available.
Alice49 Episode 0 - Dear customers who purchased "Diamonds and Cream Puffs Thank you for playing "Alice49". We have taken your comments and suggestions into consideration, We have updated the game to improve the usability of the playing environment. **Notes*** This update is a fundamental system modification. By applying this version, you will not be able to use the save data that you have been using so far,We apologize for the inconvenience, but if you wish to apply this version, If you choose "From the beginning" and overwrite the old saved data with the new saved data, please delete the saved data, ◆Update <System: Reasoning Section> Implementation of a "Back" button that allows you to return to the previous page. Implementation of a "Back" button that allows you to return to the previous page when you open the D-Note. "Open D-Note" button is implemented in the logic key selection part after selecting keywords. └ This allows you to delete keywords and use the table of contents function after selecting keywords. Implementation of the name of the Chapter currently being read. <System: General> Implement "SAVE/LOAD" button in the character drama part and the mystery part. └Remove "SAVE/LOAD" button from the D-Note screen. Added a simple operation explanation screen at the start of the game Localization of the English version is now supported. ◆Fixed bugs Fixed a problem in which the number of logic keys retrieved was not correct when deleting some logic keys. Fixes to scenario flaws in the deduction section. Fixes to typographical errors We would appreciate it if you could continue to provide us with your comments and suggestions in your reviews.Read full article on Community Announcements (Yy)






