Kumitantei: Old-School Slaughter - Retro Anime Horror Card Battler

8/23/2026, 6:49:11 AM

Release date: 4/23/2026

Tags: #comedy #anime #visual-novel #detective #card-battler #mystery #1980s #horror

User Reviews

Score: 92%Very Positive
Review Count: 347 reviews
Fetched At: 8/23/2026, 6:49:11 AM

Reference prices

Japan

¥ 1,700 (JPY)

Steam JP

$14.99 (USD)

Steam Global

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: ¥ 1,700
Global Price: $14.99
Price in Your Region: ¥ 1,700Prices as Steam lists them per country. What you are actually charged depends on your Steam account settings.Regional prices checked: 30 Aug 2026
Sale Status: Regular pricing
Price Checked At: 8/27/2026, 2:42:21 PM

The price snapshot and review snapshot differ by about 104 hours. Because they are not always refreshed at the same time, confirm the latest Steam listing before making a purchase decision.

Key highlight

Kumitantei: Old-School Slaughter is an episodic murder-mystery visual novel and card battler set in a retro 1980s anime analog horror world. Survive a deadly experiment where strategy and deduction are key.

Who this is for

A unique mystery ADV blending Showa-era anime horror with card battles. Players are participants in the 'Apathy Experiment,' tasked with solving mysteries to survive. Recommended for those who enjoy distinctive world-building and strategic gameplay.

Details

Overview

Prepare for a chilling descent into a retro-futuristic nightmare with Kumitantei: Old-School Slaughter. This episodic murder-mystery ADV blends the distinctive aesthetic of 1980s anime analog horror with the strategic depth of a card battler. Set in an alternate 1989 Japan, players are thrust into the "Apathy Experiment," a deadly game where sixteen "Absolute Students" must fight for survival. The narrative unfolds across six planned episodes, promising a gripping story filled with secrets and suspense.

Highlights

Retro Anime Horror Aesthetic: Experience a unique fusion of 1980s anime visuals and analog horror, creating a distinct and unsettling atmosphere.
Episodic Murder Mystery: Unravel a complex murder mystery across multiple episodes, each designed to deepen the intrigue and challenge players.
Card Battler Mechanics: Engage in strategic card battles that form the core of the gameplay, requiring tactical thinking to overcome opponents and survive the experiment.

Who It's For

Kumitantei: Old-School Slaughter is perfect for fans of visual novels who crave a darker, more mature narrative. Players who enjoy mystery, detective stories, and the unique visual style of retro anime will find themselves drawn into its world. Those who appreciate strategic card-based gameplay and are looking for a game with a strong, atmospheric horror element will also be captivated.

Game Info

Developed by Mango Factory and published by Akupara Games, Kumitantei: Old-School Slaughter offers a compelling mix of genres including Comedy, Anime, Visual Novel, Detective, and Card Battler, all wrapped in a horror-tinged mystery. The game supports multiple languages, including English, Spanish, Japanese, and Simplified Chinese. Players can look forward to features like multiplayer, Steam Achievements, and Steam Trading Cards, enhancing the overall experience. The game is scheduled for episodic releases starting in early 2026.