I've been playing with GameSrv from R&M Software. I used it to run all my door games on a Windows10 32bit computer. GameSrv runs the older 16 bit door games that I could not get to run under SBBS and Netfoss. I was able to get older games like Yankee Trader and Caribean Contraband to run. It was fun to set up. I had to remember my batch file commands. Luckily I had all my examples of when I ran Remote Access in the DOS days. I set up a RLOGIN log in and it passes the user names over to GameSrv from SBBS. It runs pretty seamless.
--- SBBSecho 3.11-Win32
* Origin: The Fool's Quarter, fqbbs.synchro.net (1:340/500)