An mr1 file extension is related to the Jumpman Lives! game data archives.
MR1 file extension - Jumpman Lives! game data
What is mr1 file? How to open mr1 files?
File type specification:
The mr1 file extension is associated with the Jumpman Lives!, an action platform video game for MS-DOS, developed by Apogee and released in 1991.
The mr1 file stores game data from Jumpman game.
This mr1 file type entry was marked as obsolete and no longer supported file format.
This type of file is no longer actively used and is most likely obsolete. This is typically the case for system files in old operating systems, file types from long discontinued software, or previous versions of certain file types (like documents, projects etc.) that were replaced in higher versions of their original programs.