@fubarpk thanks. The game is written in two days while waiting google play for my other game to be reviewed. The math behind it was really easy. If I don't remember wrong, all shops had a static income rate which were same for all of them due to their prices, selling shop values were %75 of their costs, watching ads was giving %12.5 of total wealth. This game and -I64 library- will surely be remastered like spring 2023?, I'm open for all advices and ideas. The game has binary localization setting. Türkçe and not Türkçe. (English). The currency was a little bit confusing, the prices are x6 more in Türkçe version(the real ratio is 1 to 17.99 now). I am mentioning it here because, I'm writing an all purpose server and thinking -dreaming?- about score submittings. The server is running now and sending multiple files at a time while clients sending multiple files (stress test) but I'm not sure If google will allow this type of connection. It's not mysql or anything like it, it is a reinvented wheel for my passion of coding.