Modular Underground Tunnels for creating an underground environment on Unity. The scene is assembled from fully modular tunnel segments. With these modules, you can create underground tunnels, corridors and rooms, for example for the subway, large underground bunkers, underground drainage systems and much more.

A large number of props for filling underground spaces inside tunnels. Warehouse props, various destroyed debris, a lot of lamps for lighting, facilities for electrifying dungeons and more.

The scene features several types of vehicles as props: Railroad Trolley and Railroad Platform for big tunnels and a Battery Electric Locomotive, platforms and tanks for it, for small tunnels.

Presentation on my WebSite | 50+ 4K Screenshots (HDRP Version)

The main thing!

By popular demand, I switched my product to URP. I want to make a small note that I am not an URP professional and have made this version of the product for use with the URP renderer. The main version of the work is HDRP, where I showed the graphical capabilities of the content from this product.

Features:

Hight Quality Model & PBR Materials
LowPoly - Game Ready
Vertex Paint: Many architectural meshes support Vertex Paint. There are 4 channels available in vertex paint materials: destroyed concrete, moss/mold, puddle and puddle on destroyed concrete.
Meshes have detail lods. Together with the configured occlusion colliders, they improve performance in the scene.
Optimized the density of the textures. The density of unwrapped meshes is ≈ 1024 px/m2, and for small meshes the parameter may be noticeably higher.
Different material options for most meshes (colored, rusty, old, mossy).
PBR Materials. Maps Occlusion, Roughness, Metallic are collected in ORM packages.
The signs with inscriptions have two spelling variants: Russian and English. You can switch by replacing the material or prefab.
The main scene shows the possibilities of the package, and it itself is not designed to accommodate the characters due to the density of filling with objects. For your game, you may need to adjust the scene and the collision in it so that the character can run freely. If you bought this product, I allow you to use a scene from this product at your discretion, even in its entirety without making changes to it.
Reused Textures for less stress on memory
Reasonable poly count.

You might be interested in a bundle of my previous work with the underground environment - Undergrounds / Mega Bundle 7 in 1

Product Parts

This product has been divided into several parts. The fact is that in the Unity Asset Store, I can upload a file with a unity package weighing no more than 6 GB, but there is twice as much content in my product, so it is divided into parts.

In this main part, you get both the scenes shown in the screenshots in the store - Underground Tunnels and Overview, but with one exception, most of the textures will be in 2048x2048 resolution, and you can get higher resolution textures separately, completely free of charge.

Additional content that you will receive for free by purchasing the Modular Underground Tunnels product:

Modular Underground Tunnels (HDRP / General)
Modular Underground Tunnels - URP (URP / This product)
Additional 4K Texture Pack for this product - Part 1
Additional 4K Texture Pack for this product - Part 2

The products are listed in the order they are installed. First, the main product in URP or HDRP execution, then texture packs. All the included products have the same price, by purchasing one of them, you will get free access to the rest of the products and will be able to add them to your account.

Unity version support

The product has been tested on Unity 2022 and Unity 6, but it can also be installed on earlier versions with minor edits.

A specially made version for Unity 6 should make your work with the product easier. Texture packs are made for version 2022 and can be imported into any other version without any problems.

Attention!

The scene was originally made for HDRP and the amount of lighting is designed for this pipeline render. This product is made exclusively for adapting content for URP rendering. To use the scene correctly in your project, you will have to remove unnecessary lighting sources so that they all work correctly.
To work with vertex colors, please install PolyBrush. It is located in: Package Manager / Unity Registry / PolyBrush
Screenshots of the main scene were taken in the URP version of the project, screenshots from the overview scene are taken from the HDRP version of the project, as there are no changes other than lighting. The engine settings files are included.
A video flyby of the same work on a different engine - YouTube (The props, design and lighting are 99% correct, the textures and meshes are the same.)
Watch the flyby of the overview map on YouTube. It was also made on a different engine, the only difference was that there were blooprints and particles on the stage, which are not present in the unity version.

Thanks for your attention! If you liked my product, please leave a review in the asset store. If you have any problems with my products, please contact me via the email address provided in the asset store.

Modular Underground Tunnels - URP