i am blown away by this *shareware* tile-based adventure game creation toolkit from 1995 called Adventure Gamer
built for windows 3.1, it allows you to create your own top-down adventure-RPG games using a drag and drop interface.
it comes with a demo game called The Gates of Macrohard, which plays like similar Windows 3.1-based RPGs of its time, like Castle of the Winds or Exile.
The editor is full-featured, including even the ability to export your game as a distributable EXE!
it appears to have been built with MS Visual Basic 3.0, judging by the VBRUN DLL included.
mobygames entry:
https://www.mobygames.com/game/92750/adventure-gamer-for-windows/
play/download shareware (unregistered) here:
https://archive.org/details/ADVNTR10
076萌SNS is a social network, courtesy of 076. It runs on GNU social, version 2.0.2-beta0, available under the GNU Affero General Public License.
All 076萌SNS content and data are available under the Creative Commons Attribution 3.0 license.