Modifying the application without the permission from the developer is strictly forbidden in case it doesn't provide the source codes for the game, software, etc.
My recommendation is to try and buy the product and ask the developer for parts of the game that can be modified for your own pleasure. As far as I know Dopewars game is mainly build to run for a 30 days session. Even if you buy the full game, when you start a new game the session will last 30 days, then the game is over and you need to start again.
