73p

.73p3D Model File

Epic Games · 2000s

Developer
Epic Games
Category
3D & CAD
MIME Type
application/vnd.epic.kengine
First Released
2000s
Open Format
No
File Signature
Not publicly documented for general use
At a Glance
.73p
3D Model File

.73p files are 3D model data files primarily used by Epic Games' Unreal Engine for game development and interactive applications.

Reviewed on May 16, 2026
Compression
Varies
Transparency
N/A
Editability
High (within Unreal Engine)
Best for
Unreal Engine 3D assets

Key Features

  • Stores 3D mesh geometry and related data.
  • Proprietary format used by Unreal Engine.
  • Contains information for rendering and real-time manipulation.
  • Integral to game development workflows.

Best For

  • Direct integration with Unreal Engine.
  • Storing 3D game assets.
  • Real-time rendering applications.
  • Complex geometric data.

Less Ideal For

  • General 3D model interchange between different software.
  • Archival of 3D models in a universally accessible format.
  • Web-based 3D viewing without conversion.
  • Sharing simple geometric shapes for non-game purposes.

Common Use Cases

  • Storing character models for games.
  • Defining environmental assets like buildings and props.
  • Integrating complex 3D objects into Unreal Engine projects.
  • Facilitating real-time rendering in simulations.

How to Open It

  1. Open the .73p file within the Unreal Engine editor.
  2. Import the asset into an Unreal Engine project.
  3. Use Unreal Engine's asset management tools to view and manipulate the model.
  4. While direct opening outside Unreal Engine is not typically supported, developers may use custom tools or plugins for inspection.

What is a .73p file?

The .73p file extension is typically associated with 3D model data generated by Epic Games' Unreal Engine. These files contain complex geometric information, textures, and sometimes animation data necessary for rendering and displaying 3D environments and objects within the engine. They are integral to the development process of video games and interactive simulations built with Unreal Engine, enabling detailed visual assets to be integrated and manipulated in real-time. Understanding these files is crucial for game developers working with Unreal Engine assets.

Programs That Open .73p Files

PlatformProgram
WindowsUnreal EngineFreeOfficial
macOSUnreal EngineFreeOfficial
LinuxUnreal EngineFreeOfficial

How to Convert .73p Files

FormatMethod
.FBXExport from Unreal Engine, Custom conversion tools
.OBJExport from Unreal Engine, Custom conversion tools

Common Problems with .73p Files

⚠️ Unable to open .73p file outside of Unreal Engine.
These files are proprietary and designed for use within Unreal Engine. Conversion to a more universal format like FBX or OBJ using Unreal Engine's export features is recommended for use in other software.
⚠️ Corrupted .73p file leading to import errors.
Try re-exporting or re-importing the asset into Unreal Engine. If the source file is also corrupted, you may need to retrieve a backup or re-create the asset.

Frequently Asked Questions

Can I open a .73p file in Blender or Maya?

Directly opening .73p files in software like Blender or Maya is generally not supported as it's a proprietary Unreal Engine format. You would typically export the model from Unreal Engine to a more common format like FBX or OBJ.

Is .73p a 3D model format?

Yes, .73p files store 3D model data, primarily used within the Unreal Engine environment for game development and interactive applications.

How do I convert a .73p file?

The primary method to convert .73p files is by using the export functionalities within Unreal Engine itself, typically exporting to formats like FBX or OBJ.

Technical Details

A .73p file is a proprietary binary format used by Unreal Engine to store 3D mesh data, including vertex information, UV coordinates, and material references. It often works in conjunction with other asset types within the Unreal Engine ecosystem, serving as a container for raw geometric information that is later processed and optimized by the engine. The specific structure can vary depending on the version of Unreal Engine and the type of asset being stored.

Did You Know?

The .73p extension is one of many proprietary asset file types used by Unreal Engine.
These files are part of a complex ecosystem designed for efficient real-time rendering in games and simulations.

Security Information

As with any file originating from game development or other software, exercise caution when opening .73p files from untrusted sources, as they could potentially be part of a malicious package, although the format itself is not inherently dangerous.