This is a TK50, a DLT tape used to backup data on the DEC microVAX minicomputer used by Magnetic Scrolls during the 1980's.

I have 29 of these recovered from the backup hoard. The 5.25" floppy disks have already been recovered. They contained some interesting data but not the good stuff.

The good stuff will be the release versions of the source code to all Magnetic Scrolls' games, plus the source code to the build tools used.

Magnetic Scrolls wrote all its build tools in-house in "C". So if the tools and game code can be recovered, it's eminently possible that the tools can be made to compile on modern machines and the games themselves be rebuilt.

Quite an interesting possibility.