Man, i really don't know any other strategy game like this that is too good. At first time i played, sad: its for
At first time i played, sad: its for children! But i'm playing GB since the last year!!!
There you can find two kinds of money, gold and cash (*dollar). I only have gold in my account, so i can say: for me it's a completely free game. With cash you can buy the stronger avatars, but i don't think it's necessary, you can play on *server off instead.
Now i have something like 14000 gp (experience points)... it's too much for me! and i don't know when i will stop playing it.