Hello ,
I worked for gameloft for a short period of time, enough about me ,
let's discuss about the board game , So you want a board game that is Cross platform ios/android/windows phone , might i suggest an actual Website ?
A website is cross platform , using php html javascript we could create a 2d board game of your choice,
If you would like to work whit me on this idea please contact me to see what we can cook-up.
Thank you for your time and have a nice day,
Ungureanu C. Valentin