With Filestar you get 0 different skills for working productively with id Tech 4 PK4 Archive (.pk4) files.
About .Pk4
Name
id Tech 4 PK4 Archive
Extension
.pk4
Format
Binary
Category
Game
Developer
id Software
Description
A PK4 file is an id Tech 4 game archive (Doom 3, Quake 4, Prey) - a ZIP file with another extension holding maps, textures, scripts and sounds. Filestar extracts its files and converts the images inside.