Just came here to say same thing , i checked quickly the files it uses slua library yes the logic most likely in lua , i haven't dumped the lua files yet , it should be fun playing around with itIt seems like some people already find a way to modify some interesting values like hp and attack on the steam version.
Most of the logic of the android version is in lua sssoooo
I don't know how hard it could be to make "good and effective" mod... But if you're decent with Lua i think it's possible to modify some values like the steam version.
UP!!