DGRP (File Format)
The DGRP format is for creating dependency groups. It's one of the few formats that appears in all five Retro Studios games.
The DGRP format is extremely simple; it's essentially just a list of resource dependencies (starting with a 32-bit count). The only difference between games is the resource ID length, and the addition of a form descriptor in Tropical Freeze.
|0x4||Dependency||Dependency Count||Dependency Array|
|End of file|
|Asset ID||1||Resource ID|
|End of dependency|