Hi ZT Folk!
Here is an older (defunct) Publisher which allows for full featured ZTB Design! https://dwarfstar.brainiac.com/
As such, many of their Titles are on Vassal. Please feel free to design a ZTB at your will . . .
Currently we have their older design "Dragon Rage" on our ZT2 Files: https://zuntzu.com/files.htm#D - see "Dragon Rage." This Title has been modernized from "http://www.flatlinedgames.com/." Take a look!
We will accept any ZTB design you submit from this website - - - Regards, ZT Upload Team
EDIT: added "from this website" from last sentence . . .
Publisher Corner - DwarfStar Games
Moderators: Ichibrothers, Cambronne