Ok so ive been playing civ 4 off and on for about 2 years and i Have worked up so i can comfortably play on noble difficulty. and this maybe somewhat noobsih.. but how does one really use corporations? I did dabble with them in one game but all it seemed to do is bankrupt me. The corporation i used was Mine Inc and i different corporations have different effects. are they worth it? can the be a game changer? or are they just kinda worthless?