If you’re looking for free 3D assets to use in Unreal Engine, there are several options available.

1. Sketchfab

Sketchfab is an online marketplace where artists and designers upload their 3D models for others to download and use for free or for purchase. It has a large collection of assets, including characters, environments, props, and more. You can filter your search by category, file type, and license, making it easy to find the assets you need.

2. Unreal Engine Asset Store

The Unreal Engine Asset Store is a marketplace where developers and artists can sell their assets for use in Unreal Engine. While not all of the assets are free, there are many that are available for free or at a low cost. You can browse by category and search for specific types of assets.

3. Blendswap

Blendswap is a community-run site where artists and designers upload their 3D models for others to download and use. It has a large collection of assets, including characters, environments, props, and more. All of the assets are free to use, but some may require attribution or a link back to the original creator.

4. Open Source Assets

There are also many open source 3D assets available online that you can use in Unreal Engine. These assets are typically created by artists and designers who want to share their work with others and encourage collaboration. You can find these assets on sites like GitHub, Sketchfab, and Blendswap.

5. Free Asset Packs

There are many websites that offer free 3D asset packs that you can use in Unreal Engine. These packs often include a variety of assets such as characters, environments, props, and more. Some popular sites that offer free asset packs include TurboSquid, CGTraders, and Free3D.

When using free 3D assets in Unreal Engine, it’s important to read the license agreement carefully to understand what you can and cannot do with the asset. Many assets require attribution or a link back to the original creator, so be sure to follow these requirements if applicable. Additionally, always test your assets thoroughly before using them in a project to ensure that they work as expected.