Well, I think it is great that most games are also released for PC for several reasions.
1. It gives the developers more potential customers!
2. If you have either a high-end PC or a XBOX360 you can play them
3. You can online game with your friend who has a console if you have a PC or vice-versa!
and MS doesn't care either way... buy the game for windows.. they earn money, buy it for 360 they earn money.
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Medical science has made great progress.. but there is still no cure for the most serious issues of all... : lazyness.