Free
With Ads
About
Heroes have infiltrated the demon realm in disguise — and only you can expose them.
Netherguard is a story‑driven logic deduction puzzle game wrapped in a dark fantasy mystery. As a newly recruited investigator for the Demon Investigation Squad, your mission is clear: analyze clues, rule out suspects, and uncover every disguised hero hiding among the demon population.
No guessing. Ever.
Each puzzle is crafted with one guiding rule — every deduction must be provable through pure logic. The built‑in solver enforces it: if you can’t prove it yet, you can’t choose it. This isn’t trial‑and‑error; it’s true logical reasoning taken to its finest form.
What Makes Netherguard Different
Unlike other puzzle games that rely on random guessing or repetition, Netherguard is built around a mathematically guaranteed logic system. Every solution is earned through reasoning, not luck. Each discovery feels rewarding, every “aha!” comes from real deduction.
The Adventure
Journey through multiple regions of the demon world as your investigations grow in scope and complexity. Each case introduces new suspects, traits, and layers of logic to untangle. Along the way, a fully animated visual‑novel narrative brings the world to life — with memorable demon characters and a mystery that deepens with every revelation.
Features
• Hand‑crafted logic puzzles with progressive difficulty
• A zero‑guessing system — every move must be logically proven
• Story‑driven investigations with animated cutscenes
• Diverse demon and hero types with unique traits to deduce
• Region‑based progression across a beautifully illustrated world map
• Designed for mobile — intuitive touch gameplay
For fans of Sudoku, Picross, logic grids, and anyone who believes puzzle games should respect your intelligence — Netherguard delivers a pure deduction experience you can truly master.
Terms of Service and Privacy Policy
Terms of Service: https://www.notion.so/Terms-of-Service-327d9de5db0380269ec9c2ebb0c0f085
Privacy Policy: https://www.notion.so/Privacy-Policy-327d9de5db0380be9b86e18e659033e3
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What's New in Netherguard
1.0.3
July 1, 2026
- App stability and performance have been improved.





