Blueprint-Only | AI, Patrol, Inventory, Weapons, Interactions, Triggers, Objectives, Unreliable Memory, Music, Dynamic Footsteps, Save System

Modular Horror System (MHS) is a powerful Blueprint-based horror game framework and gameplay engine for Unreal Engine 5 (UE 5.6 and 5.7). Built to help indie developers, solo creators, and prototypers quickly create immersive first-person horror and story-driven experiences with minimal setup. This modular system provides a complete set of core gameplay features including interaction systems, inventory management, weapons and tools, enemy AI (+ patrol behavior), dynamic footsteps, lighting effects, puzzle mechanics, event-driven triggers, dynamic scare mechanics, and original horror music tracks.

Fully integrated, customizable, and production-ready. Modular Horror System is beginner friendly, Blueprint-based, and built for rapid Unreal Engine development with scalable architecture for advanced projects. Drop it into your project and start building immediately.

Documentation | Discord Support | Introduction

Core Features

🧩 Interaction System

Interact with doors, radios, light switches, phones, weapons, tools, and puzzles.

- Interact with doors, radios, light switches, phones, weapons, tools, and puzzles

- Crosshair-based interaction feedback

- Pickup, use, move, and inspect objects

- Item-locked interactions (keys, tools, camera)

- Match-rotation puzzle support (e.g. frame alignment)

📦 Inventory System

A clean horizontal inventory bar with fully modular item logic.

- Clean horizontal inventory bar with modular logic

- Pickup, use, and description display

- “Use” icon appears only when contextually valid

- Interface-based functions for easy access

- Blueprint child support for expansion

- Inventory can optionally open only if the player has items (v0.9, toggleable)

- Stamina bar auto-hides until used, then hides again at full (v0.8)

Included items:

- 🔦 Flashlight (battery-powered, fully animated)

- 🔋 Battery

- 🗝️ Key

- 📖 Journal (lore + alerts)

- 📷 Camera (Added light source)

- 💊 Painkillers

- 🔫 Pistol

- 🔨 Crowbar

- 🪛 Screwdriver

🔫 Weapons & Tools (v0.8)

New gameplay systems expand combat and puzzle mechanics.

Pistol

- Hit detection with impact response

- Bullet and shell casing spawning

- Muzzle VFX, firing audio, and first-person animation

Crowbar

- Swing-based melee system

- Improved swing detection (v0.9)

- Breakable object support

Screwdriver

- Tool-based vent interactions

- Directional screw removal

Equip Manager

- UnequipAll logic cleanly removes current items

- Simplifies switching between tools and weapons

🎯 Trigger System

Create environmental sequences, scares, and progress blockers.

- Custom scare triggers (camera rotation, delays, scripted events)

- Audio cues and jump scares

- Overlap-based or scripted setup

- Blackout event (v0.9) targeting existing BP lights

- Global or tag-filtered light control

🛠️ Modular Blueprint Props

New interactable and visual components:

- Drawer BP with item storage and custom open ranges

- Lamps and lightbulbs with material + sound toggles

- Black & White Trigger Box (desaturates view on overlap)

- Modular Candle BPs with burn time, size, and flame control

- Spline Books system with adjustable spacing

👣 Dynamic Footsteps

Audio that adapts to your environment.

- Surface-based footstep audio (wood, tile, carpet, grass)

- Animation notify-driven system

- Easy surface expansion

🎭 Enemy AI & Scares

Base AI for horror encounters with modular behavior.

- Vision- and sound-based detection

- Patrol, chase, and idle logic

- Improved movement and rotation (v0.9)

- Dedicated AI animation blueprint

- Robust health handling (v0.9):

- Timed destruction

- Dead state prevents attacks

🔦 Lighting & Effects

Immerse players with responsive horror visuals.

- Fully animated flashlight with visible hand aiming (v0.9)

- Flashlight attached to camera for consistent alignment

- Improved falloff, shadows, and realism

- Flickering lights with audio cues

- Global flicker control via MPC

- Volumetric fog and depth of field

🎵 Music & Audio

54 original music tracks included:

- 6x Ambient

- 8× Menu

- 8× Core Atmosphere

- 8× Low Tension

- 8× Rising Tension

- 8× Discovery

- 8× Scene

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🎮 What's Included

- Fully playable demo map showcasing every system

- Modular Blueprints with exposed settings for rapid tweaking

- No C++ — 100% Blueprint, beginner-friendly

- Built for first-person horror but expandable for other genres

- Optimized and tested for Unreal Engine 5.6

📂 Bonus

📘 Documentation

💬 Discord Support

🎥 Video Tutorials (coming soon)

Additional:

- Audio Files: 100+ (Cues, Waves, Attenuations)

- Camera Sway System: Immersive camera sway effect for enhanced realism and tension.

- Fog System: Showcases volumetric fog in action, providing visual examples for those unfamiliar with how to use volumetric fog effectively in their horror games.

Lumen Integration:

This project uses Lumen for advanced global illumination and reflections. Lumen is active by default, providing high-quality lighting and real-time global illumination without needing baked lighting. Ensure your system supports Lumen for the best performance and visual quality.

Future updates may be added to further expand the system, ensuring it can grow based on user feedback and new developments in horror game design.