I just bought the game for $20.00 and began to play for my Mac OS X Version 10.6.8. I instantly noticed the game was super dark and grainy. I tried switching all of the visual settings and still it did not improve. I looked on youtube, google, and steam forums and found no reason why it didn't work. I checked the minimum and recommended software it was fine. I have seen videos of the game before which influenced me to buy it, and it looked great.
Please help on how to get rid of the grainy look?!?!?!