Old diskettes can be a problem especially storage that suits the white menace bacterial / fungus that can grow on the surface and cleaning can sometimes remedy but unless it's spots that can be got though the window with an ear bud, disassembly is required.

The thing I'd recommend is search of an image of the disks if they exist. Next best is an emulation eg [1] [2] which I found by way of google and yandex

[1] https://www.abandonwaredos.com/abandonware-game.php?abandonw... [2] https://archive.org/details/super-solvers-spellbound-dos-en-...