STYL - Underground Prison

Unity

Stylized Modular Dungeon Kit

📌 Overview

STYL - Underground Prison is a modular dungeon asset designed for Unity.
It features a medieval underground prison theme with stylized visual elements, and is compatible with top-down, action RPG, and roguelike genres.

• Modular structure based on 2-meter units
• Built for snap-to-grid placement (Grid Snap = 1)
• Includes walls, floors, props, demo scenes, and more
• Fully supports Built-in RP, with optional conversion for URP and HDRP

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What is STYL?

STYL stands for Stylized Theme, Your Level, a series of high-quality assets designed to help you efficiently create stylized environments.

We developed this series to maintain consistent quality and style across stylized assets. We’re starting with a medieval theme, but we plan to expand to sci-fi, modern, and more in the future—so stay tuned!

🛒 Purchase Methods

Would you like to use STYL-Underground Prison in your Unity project? You can purchase it directly from the store below.

STYL-Underground Prison
Stylized Modular Dungeon Kit

Live

🗂️ Folder Structure & Descriptions

• STYL-UndergroundPrison-Pack-BuiltInRP

  • 📁Materials
  • 📁Meshs
  • 📁Prefabs
    • 📁FX: Simple fire particle effects
    • 📁SET: Prefabs that have been combined in advance
  • 📁Scenes: Five demo scenes and one overview scene
    • Demo-Level_01 ~ 05, Overview
  • 📁Textures

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🔍 What's Inside

• Modular Components:
  24 walls, 3 floors, 23 pillars, 22 stairs, 7 doors/frames
• Props:
  36 stylized dungeon props (prison bars, torture tools, beds, torches, etc.)
• Demo Scenes:
  5 demo levels with different layout styles

📷 All modules are modeled using clean pivots and support grid-based placement.

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📖 URP/HDRP Conversion Guide

For URP/HDRP conversion, please refer to the document below.

URP/HDRP Conversion Guide

Learn how to convert purchased Unity assets for use with URP and HDRP render pipelines.

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📏 Units

The STYL-Underground Prison asset is created with 2m units for flexible structure construction. Since Unity treats 1 meter as 1 unit, setting your Grid Snap to 1 makes placement much easier.

Using Snap

1. Click the Snap Increment button at the top of the Editor.

   

2. In Increment Snapping, set the Move value to 1.

   

3. Select the desired object in the Scene view.

   

4. Move the object while holding down the Ctrl key.

   

5. The object will snap according to the value you set.

   

🔠 Prefab Naming Conventions

STYL-Underground Prison uses a consistent prefab naming convention for systematic asset management. This approach makes it easier to identify each asset’s type, features, and variations.

However, not all assets may perfectly follow this naming scheme. Some objects may share common materials and textures across multiple assets, leading to minor naming adjustments for organizational purposes.

Even in these cases, we strive to maintain consistency.

Naming Format

Each prefab name follows the format below:

[Prefix]_[Category]_[Descriptor]_[Variation]_[Additional Info]

Component	Description
Prefix	SM (Static Mesh)
Category	Main type of asset (e.g., Stair, Pillar, Prop, Trim, Wall, etc.)
Descriptor	Describes shape, style, or function (e.g., Spiral_Slide, Rough, Round)
Variation	Distinguishes different versions of the same asset - Numbers (01, 02, ...): minor shape differences - Letters (A, B, C, ...): major shape differences
Additional Info	Details like size, alignment, angle, etc.

Naming Convention Examples

Stair

Prefab Name	Components
	SM_Stair_Spiral_Slide_01_45Deg - SM → Static Mesh - Stair → Stair - Spiral_Slide → Spiral slide shape - 01 → First variation - 45Deg → 45-degree slope
	SM_Stair_Rough_01_Large_Staggered - SM → Static Mesh - Stair → Stair - Rough → Rough style - Large → Large size - Staggered → Staggered arrangement
	SM_Stair_Spiral_01_Large_22p5Deg - SM → Static Mesh - Stair → Stair - Spiral → Spiral structure - 01 → First variation - Large → Large size - 22p5Deg → 22.5-degree angle

Pillar

Prefab Name	Components
	SM_Pillar_01_Round_B - SM → Static Mesh - Pillar → Pillar - 01 → First variation - Round → Round shape - B → Major shape difference, B variation
	SM_Pillar_01_Chamfered_Cap_Large - SM → Static Mesh - Pillar → Pillar - 01 → First variation - Chamfered_Cap → Chamfered pillar top - Large → Large size
	SM_Pillar_01_Chamfered_Cap_Small - SM → Static Mesh - Pillar → Pillar - 01 → First variation - Chamfered_Cap → Chamfered pillar top - Small → Small size

Prop

Prefab Name	Components
	SM_Prop_Bed_01_Pillow_A - SM → Static Mesh - Prop → Prop - Bed → Bed - 01 → First variation - Pillow → With pillow - A → Major shape difference A

Trim

Prefab Name	Components
	SM_Trim_Stone_01_B - SM → Static Mesh - Trim → Trim element - Stone → Stone material - 01 → First variation - B → Major shape difference B

Wall

Prefab Name	Components
	SM_Wall_Window_03 - SM → Static Mesh - Wall → Wall - Window → Includes a window - 03 → Third variation
	SM_Wall_Prison_01_Corner_Curved - SM → Static Mesh - Wall → Wall - Prison → Prison style - 01 → First variation - Corner → Corner type - Curved → Curved shape
	SM_Wall_Trim_01_Curved_90Deg - SM → Static Mesh - Wall_Trim → Wall trim - 01 → First variation - Curved → Curved shape - 90Deg → 90-degree form

🧩 Example Combinations

Some prefabs can be used on their own, but they’re also designed to be combined with others to create more diverse environments.

Combining Iron Bars with Windowed Walls

Combination	Result
SM_Wall_Window_01 ➕ SM_Wall_Window_Bars_01
SM_Wall_Window_02 ➕ SM_Wall_Window_Bars_01
SM_Wall_Window_03 ➕ SM_Wall_Window_Bars_01
SM_Wall_Window_Curved_01 ➕ SM_Wall_Window_Bars_02

Spiral Stairs Combinations

Combination	Result
SM_Stair_Spiral_01_45Deg ➕ SM_Stair_Spiral_01_45Deg

Walls and Trim

Combination	Result
SM_Wall_Window_01 ➕ SM_Wall_Trim_01_Curved_90Deg
SM_Wall_Window_02 ➕ SM_Wall_Trim_01
SM_Wall_Window_03 ➕ SM_Wall_Trim_01

Stairs and Railings

Combination	Result
SM_Stair_01_45Deg ➕ SM_Railing_01_Stair ➕ SM_Railing_Pillar_01

🔄 Planned Updates

• More prison props (chains, skeletons, debris)
• Additional wall/floor/ceiling variations
• Optimized mobile version (planned)

💬 Follow us on X for updates and release news.