How to open BioWare Aurora engine data .hak files
Have you had trouble opening the hak file on your computer? What are hak files? We explain what they are and recommend software that we know will open them.
What is hak file?
Files with hak file extension are resource archives used in games based on Bioware's Aurora engine.
BioWare Aurora engine data description
The hak file extension is mainly related to Bioware Aurora game engine and used for its default archive format.
The Encapsulated Resource File (ERF) format is one of BioWare's methods of packing multiple files into a single file so that they may be treated as a single unit.
In this regard, it is similar to .zip, .tar, or .rar. BioWare Aurora Toolset files that use the ERF format include the following: .erf, .hak, .mod, and .nwm. The example ERF Editor is an internal BioWare tool (Windows only).
Suggested software to open hak file

Neverwinter Nights
A highly praised RPG computer game from Bioware