played for 3 hrs. stuck in lvl 15. no chance to upgrade veterans because there is no way to harvest gold (well - in fact there IS a way: you click on gold an you get 0.5 g/s for 10 seconds... so you get 5 gold in 10 seconds. This means: for 1000 Gold, you have to click every 10 seconds on the gold-button for 34 minutes...) sorry, my first feeling was really good about this game... but now it really sucks because of the gold and gem problem.
Why are there only such a few boosts? it takes days to get from lvl 6 to 7... :-(
and selling the farm production is not getting me further much faster...