I remember TradeWars 2002. I was never into strategy games all that much, but did play a bit of Global War and later Falcon's Eye.

I was surprised to find that several BBS door games are still available for sale, such as Barren Realms Elite:

* https://www.johndaileysoftware.com/products/bbsdoors

Apparently, the above company acquired several BBS door game IPs and continues to make them available today for purchase!

I also stumbled upon one of my own games on archive.org, available to play in the browser (albeit single user only):

* https://archive.org/details/msdos_Enigma_of_Ashrella_The_199...

In my case, I still occasionally have people emailing me for registration codes, but I point them to free codes I published years ago.