Alice49 EP.0『ダイヤモンドとシュークリーム』

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 deduction section and a solution section. In the deduction 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

Deduction 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

From the keywords, select a hypothesis by reasoning to solve the mystery of the case.
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Selecting a deduction hypothesis will earn the corresponding logic key.

Solution 1: Build up your reasoning

Proceed to deduce based on the logic key and assemble a deductive hypothesis to solve the truth.

Solution Part 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

Arisu 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 Demon Book.


Suzuka, the law house
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.