Harmless Demons: Experiment on a Strange Creature

9/3/2026, 12:50:14 AM

Release date: 9/25/2020

Tags: #experimental #puzzle #investigation #2d #roguelite #science #demons #mining

User Reviews

Score: 67%3 user reviews
Review Count: 3 reviews
Fetched At: 9/3/2026, 12:50:14 AM

Reference prices

Japan

¥ 520 (JPY)

Steam JP

$4.99 (USD)

Steam

Live Store Snapshot

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Japan Price: ¥ 520
Global Price: $4.99
Price in Your Region: ¥ 520Prices 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, 12:45:25 AM

Key highlight

Harmless Demons is an experimental puzzle game where you observe, study, and interact with a strange creature, exploring its genome and behaviors using craftable tools. Released in 2020, it offers a unique scientific or

Who this is for

Recommended for players who enjoy scientific exploration and a slightly dark experimental sandbox. The relationship with the creature is entirely up to you.

Details

Overview

Percepied's "Harmless Demons" invites players into a unique experimental puzzle experience. You are tasked with observing and understanding a mysterious, unknown creature. This involves delving into its genome, studying its behaviors, and interacting with it through a variety of craftable tools. The game offers a sandbox for scientific curiosity, allowing you to approach your subject with either a detached scientific rigor or a more sadistic inclination.

Highlights

Experimental Puzzle Gameplay: Engage in a solo experimental puzzle that challenges your observational and analytical skills.
Deep Creature Interaction: Explore the creature's genome, study its behaviors, and experiment with it using built tools.
Player Agency: The game emphasizes player choice, allowing you to love, hate, feed, harm, or even kill the creature, with consequences for your actions.

Who It's For

This game is for players who enjoy unconventional puzzle mechanics, scientific exploration, and games that offer a high degree of player freedom and consequence. If you're intrigued by the idea of a "sadistic/scientific Tamagotchi" or a "reworked Minesweeper" with a dark, experimental twist, "Harmless Demons" might be for you.

Game Info

Developed and published by Percepied, "Harmless Demons" was released on September 25, 2020. It falls under the Experimental, Puzzle, Investigation, 2D, Roguelite, and Science genres, with Steam user tags further highlighting its demonic and mining aspects. The game supports multiplayer and Family Sharing, and is available in English.