Johnny Mystery: Halloween Killer - A Visual Novel Mystery

9/3/2026, 7:20:05 AM

Release date: 6/22/2020

Tags: #anime #visual-novel #sexual-content #dating-sim #nudity #puzzle #2d #cute

User Reviews

Score: 76%Mostly Positive
Review Count: 29 reviews
Fetched At: 9/3/2026, 7:20:06 AM

Reference prices

Japan

¥ 135 (JPY)

Steam JP

$0.99 (USD)

Steam

Live Store Snapshot

Body text may reflect the state at publication time. For the latest sale, price, and review changes, prioritize the live price panel, review panel, and the Steam store listing.

Japan Price: ¥ 135
Global Price: $0.99
Price in Your Region: ¥ 135Prices as Steam lists them per country. What you are actually charged depends on your Steam account settings.Regional prices checked: 3 Sept 2026
Sale Status: Regular pricing
Price Checked At: 9/3/2026, 7:15:36 AM

Key highlight

A mystery visual novel where you play as detective Johnny Mystery, unraveling a Halloween night murder at a music school. Features over 10,000 words, multiple endings, and ongoing chapter releases.

Who this is for

Fans of mystery and visual novels should dive into this Halloween night case, where player choices shape the story's outcome.

Details

Overview

Johnny Mystery and The Halloween Killer plunges players into a chilling murder mystery set on Halloween night. You step into the shoes of Johnny Mystery, a young detective who stumbles upon a girl fleeing the police. This encounter quickly leads you to investigate a perplexing murder that occurred during a party at the Municipal Music School. This narrative-driven experience is a visual novel that promises a deep dive into intrigue and suspense.

Highlights

Genre Blend: Combines elements of mystery, visual novel, and dating sim, with adult themes and puzzle-solving.
Engaging Narrative: Features a story spanning over 10,000 words, offering multiple branching endings based on player choices.
Ongoing Development: The developers, Ma Ma Software, plan to release future chapters, expanding the mystery and Johnny's adventures.

Who It's For

This game is designed for players who enjoy narrative-rich experiences, particularly those who appreciate mystery plots, visual novels, and dating sim mechanics. Fans of anime aesthetics and puzzle elements will also find plenty to engage with. Given its themes, it's best suited for mature audiences.

Game Info

Developed and published by Ma Ma Software, Johnny Mystery and The Halloween Killer was released on June 22, 2020. It supports English and Arabic languages and is available for purchase on Steam. The game also features multiplayer and family sharing options. While primarily a single-player experience, its inclusion of multiplayer suggests potential for shared storytelling or competitive elements, though the core gameplay focuses on Johnny's investigation and interactions.