it is good
level 18 And I couldn't upgrade any more, and 19 it lagged like that was its job even with the cashe turned all the way up. Could have been much better without that much lag. I've played other games just as busy or even busier with not nearly as much lag as this game has.
P.S.
When you allow me to upgrade I want to be able to do it forever not a limited amount Thanks for the effort though. you clearly put a lot of work into this game,