Everything for Tropico 3 are stored in HPK files except movies. This application can extract and archive data into and out of the HPK formatted file. You need .NET Framework 3.5 or Mono to run it. 1.0.3: Tons of bug fixes including the ability to decompress/extract challenges and ShaderCache.hpk. 1.0.2: No longer crashes if the output directory doesn't exist. It will simply create it. 1.0.1: Added bug fixes for abnormal files in Game.hpk. 1.0.0: Fixed a bug with the time stamps when archiving and also added support for Tropico 4 (experimental). Beta 7: Fixed a bug in the archival code. Beta 6: Archive feature is now functional, it automatically saves/loads settings, and many other tweaks. Beta 5: Overhauled the GUI. It now shows statistics about the file and how far along it is while extracting. Beta 4: It applies the "_filedates" to the files (modified date) and deletes the _filedates file because it is now irrelevant. Made the Zip decompression algorithm more efficient (one output stream per file). Beta 3: Added Unix support for use on Mono. Beta 2: Extracts all files successfully via C#ZipLib. Beta 1: Erred on some files during extracting using zlib.