.HPK File Extension
File Type 1HPack Compressed Archive
What is an HPK file?
File or files compressed by HPack 0.79a0, a multi-platform archiver
File Type 2Tropico Game Archive
.HPK File Association 2
Game archive used by Tropico, a game where players build and maintain the island of Tropico as El Presidente, the ruler; may contain a variety of game data, including music (i.e., music.hpk), maps, and other content.
HPK files for Tropico 3 & 4 can be extracted using HPK Archiver, a program created by a Tropico community member.