If you have a hour or so a day to spare then heres a game for you. In Goldentowns you build up your town, earn gold through your resources and then sell the gold for various things, EVEN CASH, at the market place.

It takes about a week to set things up, you need to have a stable economy before you start selling your gold, but after that its all about the gold. Ive been playing for about 3 weeks and am so far making about $30 a day in gold, though im not selling much at the moment. Try it out, its totally free and a good game even without the gold :)

Take a look here: http://cur.lv/51r2n