JPK1 (compressed archive)
From Just Solve the File Format Problem
JPK1 is the apparent signature of an aggregate format related to the JFX1 compressed file format. It was used in some demos by "JapoTek", including "An Alien Lunch" and "The Eternal Game". It contains compressed files, and probably other resource data.
Identification
ASCII "JPK1" appears beginning 12 bytes from the end of the file.
The file most likely begins with "JFX1", the same as JFX1 format.
