Well, those are not archives, they seems to be Pascal DOS executables with MZP signature. They are matching New Executable (NE) Windows file format and they can be opened with tools like ExeScope, HT Editor, IDA and ResEdit if you change file extension to EXE. See below how it looks from my side: h...

I know this is a strange game to extract assets from, but I'd like some help with retrieving the graphics (sprites, backgrounds, etc). It appears that all the game data is stored in .rsc files. I have been able to extract all the audio using Ravioli Explorer and Dragon UnPACKer, but no graphics what...