Each time I try to play a game it does not work. Oblivion gives me an error message and Half Life 2 crashes at the loading screen. If anyone has any solutions that would be awesome. Thanks.
Parallels (and other virtualization solutions) don't work well with most 3D games, and there is no workaround. To do the best possible allow 3D in the settings.
Crossover works decently but it still is not as good as Boot Camp. I actually played and beat portal on crossover and I must say that the Game really Bogged Down towards the end on crossover but ran without a hitch on Boot Camp.