Are there any pc games that I can make money off of?

I'm saving up for a new pc and I need a way to make money (:

SO I thought someone my age could make money off of games i.e. making gold in the game and selling the gold for money in real life.

Which games could I do it with?

Not including runescape or WoW.Are there any pc games that I can make money off of?
A good one to look into is Lotto Magic. It's a very unique home business that converts well and and the pay is excellent