Yep, if you buy 2 gold and 19 silver, you get 1 gold for 1 silver. Or if you buy 1 gold and 19 silver, you get 9 silver for free. Also needs better troop-selecting (with items and heroes, as others said before me), fewer mouse-lags, non-diminishing iron, more mushroom, more recipes, better quest descriptions and logs (I really like them already, BUT.)
 "Guild Dungeons 2"){kind=icon}
 "Astroflux"){kind=icon}
 "Tower of Greed"){kind=icon}