Yeah, this is a great suggestion for a theme month, it would be a great way to justify featuring them (contrast finding such a good/interesting edutainment game to “fill” a whole month …)
I too recall playing Apogee’s Word Rescue as a kid. I do believe it expanded my English vocabulary at the time.
I guess Mario is Missing is also an educational game? It came with our computer and I played it for far too long. It’s a bummer it was just pre-installed on the hard drive and not supplied as a floppy disk, I lost it at some point. But it was pretty boring. At the time I didn’t think anything how weird it was to have Mario and Luigi et al in a DOS game.
Can’t think of other DOS edutainment examples off the top of my head that I played back in the day. I’ll report back if I recall more, this is quite fun!