You've dismantled a fair few door games, are there any
guides around to explain how to put a door game together?
I checked the door games I have installed here, I found a couple written in QuickBASIC that use QBSERIAL 3.20 from 1993 by Jeff Sumberg, and one written in C that uses OpenDoors 5.10.beta-3 from 1994 by Brian Pirie, and one written in Turbo Pascal that uses JPDoor Version 3.00 SE.
A web search for JPDoor led me to this great "Door Developer Kits" collection:
http://archives.thebbs.org/ra102c.htm
I don't know which are good or which were popular, but there's a pretty good selection.
Chris/akacastor
--- Maximus 3.01
* Origin: Another Millennium - Canada - another.tel (21:1/162)