If you are interested in non physics-based game simulators, the open source VASSAL predates tabletop simulator by many years and has support for many games.
This is really interesting, never saw that before. I've long been thinking of starting a hobby project for a general purpose board gaming rules engine. Guess it's already there!
If you are more interested in the rules/logic side of things there’s also https://boardgame.io/
As a person who has used VASSAL, there is a lot of possible improvements that could be made.
TTS is pretty solid IMHO. I rather like it. But this is interesting to me. Thank you. Have you used it to playtest a novel game?
I've made a couple of Vassal modules over the years, but of existing games, but yes, I could see it being useful for playtesting.
Wow, I had never heard of it, thank you so much for the link!
is there a android version? Because some years ago I played it with jobmates and it was great.