by ulmangt
Nice! VASSAL is definitely a versatile tool.
And just to clarify my description of my PBEM solution, it's a "spreadsheet" in name only. It tries to replicate the visual look of the board within the constraints of a Google Docs Spreadsheet (not my original idea, the visual look comes from the Twilight Struggle Game Engine v4.9.1):
The other thing I really like about using Google Docs is you can share editing privileges of the board/spreadsheet with your opponent, so there's no need to email log files back and forth.