Are you a game developer or working on a virtual reality (VR) or augmented reality (AR) project? Finding high-quality 3D models for Unity can be a time-consuming and costly process. Fortunately, there are several websites that offer free Unity 3D models to help you bring your vision to life without breaking the bank. Here are 10 top websites where you can find a wide variety of Unity 3D models for free:

1. Sketchfab: This platform offers a vast selection of user-generated 3D models that you can download and use in your Unity projects for free. You'll find everything from characters and props to environments and textures.

2. Unity Asset Store: While the Unity Asset Store is known for premium assets, there's also a selection of free 3D models available. Simply filter your search results to show only free assets, and you'll discover a range of options to enhance your project.

3. TurboSquid: This online marketplace hosts a collection of free 3D models, including game-ready assets and architectural visualizations. The website offers an easy-to-use search interface and detailed model specifications.

4. CGTrader: CGTrader features a dedicated section for free 3D models, where you can browse and download assets for use in Unity and other 3D development platforms. The website also allows users to request custom models from designers.

5. Clara.io: This cloud-based 3D modeling and rendering software provides access to a library of free 3D models that you can import directly into Unity. The models cover a wide range of categories and are suitable for various types of projects.

6. Free3D: As the name suggests, Free3D is a repository of free 3D models for use in games, simulations, and animation. The website allows users to filter models by file format, making it easy to find assets compatible with Unity.

7. Blend Swap: If you're using Unity with Blender, Blend Swap is an excellent resource for free 3D models, materials, and textures. The platform enables users to share and download creative commons-licensed assets.

8. 3DExport: While 3DExport primarily focuses on premium 3D models, it also offers a selection of free assets for game developers and 3D enthusiasts. You can search for Unity-compatible models and download them at no cost.

9. OpenGameArt: This community-driven platform provides a diverse range of 3D models, textures, and music for use in games. You'll find free assets that are suitable for 2D and 3D Unity projects, as well as resources for game development in general.

10. GitHub: In addition to hosting code repositories, GitHub is home to numerous 3D model repositories that are free to use. You can explore a variety of open-source projects and find 3D assets that align with your project requirements.

Whether you're developing a game, VR experience, or architectural visualization, these websites offer a wealth of free Unity 3D models to support your creative endeavors. From characters and animations to props and environments, you'll find a diverse range of assets to enhance your Unity projects without breaking the bank.