OSX: 10.9.1
Graphics Card: Nvidia 640M
Created the Crosstie of the game and runs at the moment great in Crossover. I used the Gamersgate version of GTR 2, which is basicly Steam, because you get a steam serial you can activate in Steam. So if you don't already own the game, get the game. use the crosstie and install Steam. Activate the serial and download and play!
Have fun!