i have more of these files if anyone wants me to upload them for you lot to decode them just reply if yes

sorry about that here is the file could not upload direct as not supported file so zipped it and i believe it was a mythos software game i think had it lying around somewhere and got curious

I have this file which has unusual properties the first is that while it say it is .PMG. When using HxD file type is PMGF is it a archive or is it a uncommon 3d model format according to the file it was modified at 09/06/1997 if that helps i can upload a screenshot if need be