With Filestar you get 0 different skills for working productively with CRI CPK Archive (.cpk) files.
About .Cpk
Name
CRI CPK Archive
Extension
.cpk
Format
Binary
Category
Game
Developer
CRI Middleware
Description
A CPK file is a CRI Middleware game archive used by hundreds of Japanese games (Sega, Bandai Namco, Atlus, Koei Tecmo) on PS3, PS4, Switch and PC. Filestar extracts its files, decoding the CRILAYLA compression entries carry.