After upgrading my computer, I decided to try out a game that I had bought a year ago but that my old computer couldn't handle: Sid Meier's Civilizations V. The opening movie graphics were so good and smooth on my new Macbook Pro that I thought it was a real for a few moments.
I chose to play as the Persians because they receive financial bonuses over the other civilizations. After building banks, stock exchanges and my "special building" Satrap's Court, I was raking in extravagant amounts of money per turn. The hours flew by and my civilization became rich. This was my strategy all along and I was easily ably to buy buildings and upgrade my military units late in the game.
In the end, I surrounded the other Civs with "Giant Death Robots" but I built a spaceship before I managed to actually attack with them. Once I get some work done (!) I will try another scenario on a harder level. I actually progressed so far that the game was quoting George W. Bush! This is one addicting game.